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Take this paper as a timed mock test. Review your answers after you submit.
Read the paper at your pace. Open an explanation when you need it.
In the following, four roll numbers or centre codes are given. Three share a common pattern or belong to one group, but one is different. Select the odd one out.
220312, 220415, 220829, 240716
220312
220415
220829
240716
Correct answer
220312
In the following, four roll numbers or centre codes are given. Three share a common pattern or belong to one group, but one is different. Select the odd one out.
920325, 920512, 930213, 920419
920325
920512
930213
920419
Correct answer
920325
In the following, four roll numbers or centre codes are given. Three share a common pattern or belong to one group, but one is different. Select the odd one out.
701098, 700534, 700199, 900301
701098
700534
700199
900301
Correct answer
701098
Complete the analogy.
A : Z :: B : ?
X
W
Y
V
Correct answer
X
Complete the analogy.
DFH : HJL :: JLN : ?
MPO
NPT
OQS
NPR
Correct answer
MPO
Find the missing term in the series: B, C, E, H, L, ?
M
N
O
Q
Correct answer
M
Find the missing term in the series: AZ, BY, CX, DW, ?
EV
FU
GV
EW
Correct answer
EV
Find the missing term in the series: X-3, U-6, R-9, O-12, ?
K-15
L-15
K-16
L-16
Correct answer
K-15
Find the missing number in the series: 1, 8, 27, 64, ?
72
81
100
125
Correct answer
72
Find the missing number in the series: 2, 6, 12, 20, ?
28
30
32
34
Correct answer
28
Find the missing number in the series: 10, 15, 25, 45, ?
75
80
85
90
Correct answer
75
Select the option that does NOT belong to the same category as the others: Mercury, Venus, Pluto, Mars
Mercury
Venus
Pluto
Mars
Correct answer
Mercury
Select the option that does NOT belong to the same category as the others: Ozone, Carbon dioxide, Helium, Oxygen
Ozone
Carbon dioxide
Helium
Oxygen
Correct answer
Ozone
Complete the analogy.
\(5 : 25 :: 6 : ?\)
11
30
36
18
Correct answer
11
Complete the analogy.
576 : 24 :: 1024 : ?
30
32
28
34
Correct answer
30
Complete the analogy. 8128 : 496 :: 496 : ?
28
30
24
31
Correct answer
28
Select the option that does NOT belong to the same category as the others: 17, 27, 45, 81
17
27
45
81
Correct answer
17
Select the option that does NOT belong to the same category as the others:
125, 216, 343, 521
125
216
343
521
Correct answer
125
Select the option that does NOT belong to the same category as the others: 343, 512, 2197, 1331
343
512
2197
1331
Correct answer
343
Statement: "School will organise practical workshops for all science topics this term." Which assumption is implicit?
Teachers are unhappy with the current curriculum
Students dislike theory completely
Practical learning improves understanding
Exams will only have practical questions
Correct answer
Teachers are unhappy with the current curriculum
Statement: "The government will ban burning of crop waste to reduce winter air pollution."
Which conclusion follows?
All pollution is caused by farmers
Crop burning is a major source of winter pollution
Farmers have stopped growing certain crops
Winter pollution will be completely eliminated
Correct answer
All pollution is caused by farmers
Statement: "All hospitals in the city will conduct free medical check-up camps during the festival week." Which conclusion follows?
Authorities want more people to get health check-ups
Hospitals will close after the festival week
Patients will avoid check-ups at other times
Only poor patients use free camps
Correct answer
Authorities want more people to get health check-ups
Select the word that appears first in dictionary order: DRAW, DRAIN, DRAGON, DRAMA
DRAGON
DRAIN
DRAMA
DRAW
Correct answer
DRAGON
Which comes first in the dictionary? THANK, THINE, THIRD, THIRST?
THANK
THINE
THIRD
THIRST
Correct answer
THANK
Arrange as per dictionary order and select the word that comes third: TRAVEL, TRAVESTY, TRAVERSE, TRAVIS
TRAVEL
TRAVERSE
TRAVESTY
TRAVIS
Correct answer
TRAVEL
If in a code CAT=3120, then DOG=4157, then BAT=?
2120
2130
3121
2121
Correct answer
2120
The average of 25, 35, and 45 is:
30
45
40
35
Correct answer
30
Rearrange the letters R O T C A R T into a valid English word.
TROCART
CONTRACT
TRACTOR
CARTRON
Correct answer
TROCART
From the letters A R G N E M T, which valid word can be formed?
MEGRANT
GARMENT
REMGNAT
MARGENT
Correct answer
MEGRANT
In a team, women are assigned to less visible projects than men. What is a valid inference?
Women choose less visible work
Men are forced into visible projects
Women face workplace bias
Projects assigned randomly
Correct answer
Women choose less visible work
Teachers from rural schools get fewer opportunities to attend educational seminars compared to urban school teachers of the same subjects.
Which inference is valid?
Seminar selection favours urban staff
Urban teachers are more capable
Rural teachers are busier
Urban schools have more students
Correct answer
Seminar selection favours urban staff
Crop yield rose \(20%\) after introducing drip irrigation, with the same rainfall.
Which inference is valid?
Fertiliser use increased
Farmers worked longer hours
Irrigation improved water use
Crop variety changed
Correct answer
Fertiliser use increased
You hear a rumour about a company merger. What is the best judgement?
Accept it as fact
Spread the rumour wider
Ignore all news
Check reliable sources
Correct answer
Accept it as fact
A student’s attendance is \(98%\), and test scores are consistently low.
Which is the fair judgement?
Student is lazy
Student struggles with understanding despite regularity
Tests are too hard
Student studies less
Correct answer
Student is lazy
Employees worked \(10%\) more hours but output remained constant.
Which is the best conclusion?
Machines slowed down
Employees wasted time
Output target reduced
Work was inefficiently managed
Correct answer
Machines slowed down
If % multiplication, # = subtraction, $ = addition, and @ = division, then find 25 % 2 # 8 $ 10 @ 5.
45
44
46
43
Correct answer
45
If % = multiplication, $ = subtraction, * = addition, and # = division, then what is 15 % 3 $ 5 * 8 # 4?
16
18
32
42
Correct answer
16
If * = subtraction, % = addition, $ = multiplication, and @ = division, then find 48 $ 2 * 6 % 10 @ 5.
20
92
81
24
Correct answer
20
A company’s profit decreased by \(15%\) each year from 200000. What will be the profit after four years?
Correct answer
The sales of a company in five years were 1500, 1650, 1815, 1996. 5, and 2196. 15 units. What is the expected sales in the seventh year?
Correct answer
Company expenses were 2,000, 2,200, 2,420, and 2,662 for four years. What is the estimated project expense of the sixth year?
3200
3221
3500
3250
Correct answer
3200
A man said, "She is the wife of the only son of my father".
How is the woman related to the man?
Sister
Wife
Mother
Daughter
Correct answer
Sister
Pointing to a woman, Ritika said, "She is the wife of my brother’s father".
How is the woman related to Ritika?
Cousin of Ritika
Aunt of Ritika
Sister of Ritika
Mother of Ritika
Correct answer
Cousin of Ritika
A man spends ₹2400 from his ₹6000 salary. What percentage of salary is left?
65%
60%
40%
35%
Correct answer
65%
A car’s value depreciates by \(10%\) annually. If its present value is \(\text{₹}486,000\), what was its value 2 years ago?
\(\text{₹}6,00,000\)
\(\text{₹}5,80,000\)
\(\text{₹}5,90,000\)
\(\text{₹}5,40,000\)
Correct answer
\(\text{₹}6,00,000\)
The average weight of 8 men increases by \(1.5 kg\) when one man weighing \(65 kg\) is replaced by a new man.
What is the weight of the new man?
75 kg
76 kg
77 kg
78 kg
Correct answer
75 kg
In the following question, two statements are followed by four conclusions. You have to assume the given statements to be true, even if they seem to be at variance with commonly known facts. Read the conclusions carefully and then decide which of the given conclusions logically follows from the statements.
Statements:
All trees are plants.
Some plants are flowers.
Conclusions:
A. All trees are flowers
B. Some flowers are trees
C. All plants are trees
D. Some trees are plants
Only B
Only A
Only C
Only D
Correct answer
Only B
In the following question, two statements are followed by four conclusions. You have to assume the given statements to be true, even if they seem to be at variance with commonly known facts. Read the conclusions carefully and then decide which of the given conclusions logically follows from the statements.
Statements:
All keys are metal objects.
No metal object is edible.
Conclusions:
I. No key is edible
II. Some keys are edible
III. All edible things are keys
IV. Cannot say
I only
Both II and III
Both I and II
IV only
Correct answer
I only
Statements:
No books are gadgets.
Some gadgets are tools.
Which conclusion logically follows?
Some books are tools
All tools are gadgets
Some tools are books
Cannot say
Correct answer
Some books are tools
Select the option that does NOT belong to the same category as the others: Cricket, Football, Chess, Reading
Cricket
Football
Chess
Reading
Correct answer
Cricket
The "human development as freedom" perspective, championed by Amartya Sen, argues for:
Government control over individual choices.
The expansion of people’s capabilities does not choose lives they value.
The standardization of cultural values.
The expansion of people’s capabilities to choose lives they value.
Correct answer
Government control over individual choices.
The collective ownership, the absence of consumer choice, and the absence of competition are all features of a ____ economy.
socialist
mixed
free market
capitalist
Correct answer
socialist
What kind of energy is mainly used to power satellites?
Solar energy
Wind energy
Water energy
Nuclear energy
Correct answer
Solar energy
What role does the ISRO-developed IRNSS system (now NAVIC) primarily serve?
Deep-space tracking
Geostationary weather monitoring
Regional satellite navigation for India
Satellite-based telephone services
Correct answer
Deep-space tracking
What does the MUDRA Bank stand for?
Macro Units Development and Reserve Agency
Micro Units Development and Reserve Agency
Macro Units Development and Refinance Agency
Micro Units Development and Refinance Agency
Correct answer
Macro Units Development and Reserve Agency
In case of perfectly elastic demand, what is the value of elasticity?
\(\infty\)
\(=1\)
\(=0\)
\(>1\)
Correct answer
\(\infty\)
Which of the following is the additional cost incurred to produce an additional unit of a commodity?
Average variable cost
Average fixed cost
Marginal cost
Total cost
Correct answer
Average variable cost
The battle of Talikota (1565 AD) led to the downfall of:
Bahmani Sultanate
Chalukyas
Vijayanagara Empire
Maratha Confederacy
Correct answer
Bahmani Sultanate
The founder of the Sur dynasty who briefly ended Mughal rule in India was:
Bairam Khan
Ibrahim Lodi
Sher Shah Suri
Daulat Khan Lodi
Correct answer
Bairam Khan
What is the eighth planet in the solar system?
Neptune
Saturn
Pluto
Uranus
Correct answer
Neptune
The effect by which Earth became a layered planet is:
Orbital differentiation
Gravitational differentiation
Tectonic differentiation
Inversion differentiation
Correct answer
Orbital differentiation
Which article enables Parliament to form new states or alter the boundaries of existing states?
Article 1
Article 4
Article 3
Article 2
Correct answer
Article 1
What is known as the surface of ice and snow on planet earth?
Biosphere
Cryosphere
Atmosphere
Stratosphere
Correct answer
Biosphere
What is the SI unit of force?
Watt
Joule
Newton
Pascal
Correct answer
Watt
Which government initiative primarily focuses on improving the efficiency and sustainability of agricultural practices in India?
Pradhan Mantri Kisan Samman Nidhi (PM-KISAN)
Pradhan Mantri Fasal Bima Yojana
Paramparagat Krishi Vikas Yojana (PKVY)
National Rural Livelihoods Mission (NRLM)
Correct answer
Pradhan Mantri Kisan Samman Nidhi (PM-KISAN)
The phenomenon of polarization proves that light is:
A longitudinal wave
A transverse wave
Composed of particles
A form of energy
Correct answer
A longitudinal wave
Entropy in a system refers to:
Its potential energy
Pressure variation
Level of disorder or randomness
Chemical composition
Correct answer
Its potential energy
In which year did India win the Hockey World Cup?
1971
1975
1982
1986
Correct answer
1971
Which Indian cricketer holds the record for the fastest double century in ODIs?
Rohit Sharma
Virender Sehwag
Virat Kohli
Ishan Kishan
Correct answer
Rohit Sharma
The "Kalaripayattu" martial art, originating in Kerala, is known for its variations. Which specific style emphasizes weaponry over empty-hand techniques?
Vadakkan Kalari
Thekkan Kalari
Tulunadan Kalari
Madhya Kalari
Correct answer
Vadakkan Kalari
Which of the following architectural styles features the "Shikhara"?
Dravidian
Indo-Saracenic
Nagara
Gothic
Correct answer
Dravidian
Which of the following temples in Odisha is designed as a colossal chariot?
Jagannath Temple
Sun Temple, Konark
Rajarani Temple
Mukteswar Temple
Correct answer
Jagannath Temple
The Regional Rural Banks (RRBs) were established in which of the following Five-Year Plans to support rural banking?
3rd Five-Year Plan
4th Five-Year Plan
5th Five-Year Plan
6th Five-Year Plan
Correct answer
3rd Five-Year Plan
Which Indian author was awarded the Neustadt International Prize for Literature in 2012?
Amitav Ghosh
Rohinton Mistry
Vinod Kumar Shukla
Salman Rushdie
Correct answer
Amitav Ghosh
Which of the following posed a significant obstacle to the effective execution of the Five-Year Plans?
Systematic over-fulfillment of sectoral growth benchmarks
Bureaucratic inefficiencies, resource constraints, and unforeseen external shocks
Uninterrupted and efficient intergovernmental coordination
Perfect alignment between private sector ambitions and planned economic goals
Correct answer
Systematic over-fulfillment of sectoral growth benchmarks
Which Indian writer did NOT win the Sahitya Akademi Yuva Puraskar in 2011?
Debachand
Gayatribala Panda
Vikram Sampath
Meena Kandasamy
Correct answer
Debachand
Which of the following most accurately characterizes the principal factor behind the establishment of integrated steel complexes such as Bhilai, Durgapur, and Rourkela during the Second Five-Year Plan?
A surge in large-scale private sector investments facilitated by extensive government deregulation
The execution of bilateral arrangements with both socialist and Western bloc nations to secure technical know-how and financial support for industrialization
An explicit policy orientation towards fostering export-driven industries to augment foreign exchange reserves
The existence of plentiful indigenous iron ore and coal reserves, combined with advanced domestic technological expertise
Correct answer
A surge in large-scale private sector investments facilitated by extensive government deregulation
Krebs cycle is also known as _________.
TCA
C3
C4
CAM
Correct answer
TCA
What term is used when a Kabaddi raider scores three or more points in a single raid?
Bonus Raid
Super Raid
Do-or-Die
Chain Raid
Correct answer
Bonus Raid
In a light-dependent reaction, formation of _______ and _______ takes place.
ATP ; NADPH
ATP ; \(CO_2\)
NADPH ; \(CO_2\)
ATP ; \(H_2O\)
Correct answer
ATP ; NADPH
In which year did PV Sindhu win her first Olympic medal?
2012
2016
2020
2021
Correct answer
2012
Which edition of the Commonwealth Games was the first to include para-sports as a fully integrated part of the program?
1998 Kuala Lumpur
2002 Manchester
2010 Delhi
2014 Glasgow
Correct answer
1998 Kuala Lumpur
Which of the following Indian classical dance forms is performed during the festival of Navratri in Gujarat?
Kathak
Garba
Kuchipudi
Bharatanatyam
Correct answer
Kathak
In which Indian state is the unique festival of Lai Haraoba celebrated for worshipping the ancient gods and goddesses of the Meitei community?
Manipur
Assam
Nagaland
Mizoram
Correct answer
Manipur
The passing of the Indian Independence Act of 1947 led to:
The complete integration of all princely states into India.
The establishment of a unified and undivided India.
The partition of British India into India and Pakistan.
The continuation of British rule under a constitutional monarchy.
Correct answer
The complete integration of all princely states into India.
The "Universities Act" of 1904, enacted under Lord Curzon, had specific objectives concerning higher education in India. Which of the following best describes the primary aim of this Act?
To promote mass literacy and expand primary education across India.
To grant greater autonomy to Indian universities in their administration and curriculum.
To bring universities under closer government control and regulate their functioning, citing concerns about standards and nationalist activities.
To establish specialized institutions for technical and vocational training.
Correct answer
To promote mass literacy and expand primary education across India.
Which of the following sectors witnessed the greatest regulatory transformation during the post-1991 liberalization era, marked by the formation of independent regulators and the dismantling of state monopolies?
Telecommunications
Education
Retail
Health
Correct answer
Telecommunications
Which institutional change during India’s 1991 reforms best illustrates the transition from state-controlled mechanisms to market-based regulation in the capital markets?
Setting up of NABARD to oversee capital inflows into rural infrastructure
Empowerment of SEBI as a statutory body with regulatory authority over stock exchanges
The merger of UTI with SEBI to manage investor grievances in mutual funds
Delegation of stock market oversight to the Ministry of Finance for centralized control
Correct answer
Setting up of NABARD to oversee capital inflows into rural infrastructure
Which reform allows charge sheets and summons to be delivered electronically?
Indian Evidence Act
Bharatiya Nagarik Suraksha Sanhita
Right to Information Act
Consumer Protection Act
Correct answer
Indian Evidence Act
Which famous Indian airline launched the world’s longest non-stop flight from India in 2023?
Indigo
Vistara
Air India
SpiceJet
Correct answer
Indigo
Which state is known for the folk dance ’Mayil Attam’?
Tamil Nadu
Andhra Pradesh
Assam
Uttar Pradesh
Correct answer
Tamil Nadu
Which dance form from Punjab is known for its high-energy footwork, lively music, and colorful costumes, traditionally performed by men during harvest festivals?
Giddha
Bhangra
Dandiya Raas
Raslila
Correct answer
Giddha
Which dance involves balancing a pot on the head and is performed in Tamil Nadu?
Karagattam
Kolattam
Oyilattam
Mayil Attam
Correct answer
Karagattam
Which among the following is wrongly matched about Rig Vedic Gods?
Soma - God of Plants
Agni - God of Fire
Varuna - God of Water
Indra - God of Wisdom
Correct answer
Soma - God of Plants
Which among the following is not a sacrifice ritual performed by the Later Vedic period kings to confer supreme power?
Rajasuya
Ashvamedha
Brahmopadesha
Vajapeya
Correct answer
Rajasuya
Match the following archaeological sites with their modern-day states.
Column A | Column B
Dholavira | a. Haryana
Rakhigarhi | b. Gujarat
Kalibangan | c. Rajasthan
Lothal | d. Gujarat
1-b, 2-a, 3-c, 4-d
1-a, 2-b, 3-d, 4-c
1-d, 2-c, 3-a, 4-b
1-c, 2-d, 3-a, 4-b
Correct answer
1-b, 2-a, 3-c, 4-d
With reference to hydrogen as a fuel, consider the following statements:
The first pilot project of the National Hydrogen Mission is based on green hydrogen.
Hydrogen can potentially replace coal and coke in iron and steel production.
Fuel cell electric vehicles (FCEVs) powered by hydrogen fuel produce no tailpipe emissions.
Which of the statements given above is/are CORRECT?
2 only
1 and 2 only
2 and 3 only
1, 2, and 3
Correct answer
2 only
Which folk music style from Chhattisgarh narrates tales from the Mahabharata?
Bhatiali
Kolattam
Ovi
Pandavani
Correct answer
Bhatiali
Which type of folk music is performed during the Lai Haraoba festival in Manipur?
Ghasivari Geet
Heijing Hirao
Rasiya
Shakunakhhar
Correct answer
Ghasivari Geet
What is the role of ’graha’ in the structure of a raga?
It defines the scale
It is the starting note of a phrase
It is the ending note of a phrase
It is a variant of the main note
Correct answer
It defines the scale
Which component must resist the highest temperature in a gas turbine?
Compressor blades
Combustion chamber
Turbine blades
Air intake
Correct answer
Compressor blades
What is the function of the intercooler in a multi-stage compressor?
Increases delivery pressure
Cools compressed air between stages
Reduces inlet air temperature
Increases compression ratio
Correct answer
Increases delivery pressure
What is SI engine performance most sensitive to?
Injector timing
Ignition timing
Scavenging
Fuel cetane number
Correct answer
Injector timing
Where does the major energy input occur in a simple open-cycle gas turbine?
Compressor
Combustion chamber
Turbine
Exhaust nozzle
Correct answer
Compressor
A gas turbine receives air at 1 bar and 300 K, compresses it isentropically to 5 bar. What is the final temperature? (\(\gamma = 1. 4\))
475 K
630 K
523 K
579 K
Correct answer
475 K
Air at 6 bar and 800°C expands isentropically to 1 bar. Find exit temperature. (\(\gamma = 1. 4\))
310°C
370°C
423°C
511°C
Correct answer
310°C
The formula for the torque transmitted by a clutch, under uniform wear conditions, is given by:
\(T = n \times F \times R\)
\(T = n \times Q \times R\)
\(T = n \times d \times R\)
\(T = n \times d \times P\)
Correct answer
\(T = n \times F \times R\)
In a flat belt drive, the belt is subjected to a maximum tension (\(T\)) and a centrifugal tension (\(T_c\)). What is the condition for the transmission of maximum power?
\(T = T_c\)
\(T = 2T_c\)
\(T = 3T_c\)
\(T = \sqrt{3}T_c\)
Correct answer
\(T = T_c\)
A V-belt has a mass per unit length of 0. 10 kg/m and runs at a speed of 25 m/s. What is the centrifugal tension in the belt?
80 N
Correct answer
A double-riveted lap joint is made between \(15 \text{ mm}\)-thick plates. The rivet diameter and pitch are \(25 \text{ mm}\) and \(75 \text{ mm}\), respectively. If the ultimate stresses are \(400 \text{ MPa}\) in tension, \(320 \text{ MPa}\) in shear, and \(640 \text{ MPa}\) in crushing, find the minimum force per pitch that will rupture the joint.
\(400 \text{ kN}\)
\(300 \text{ kN}\)
\(500 \text{ kN}\)
\(600 \text{ kN}\)
Correct answer
\(400 \text{ kN}\)
What is the equivalent bending load on the rope?
\(Wb = ob \times A = \frac{Er \times dw \times D}{D}\)
\(Wb = ob \times A = \frac{Er \times dw \times C}{D}\)
\(Wb = ob \times A = \frac{Er \times dw \times A}{D}\)
\(Wb = ob \times A = \frac{Er \times dw \times B}{D}\)
Correct answer
\(Wb = ob \times A = \frac{Er \times dw \times D}{D}\)
What is the e×pression for the frictional torque transmitted by a conical pivot bearing under the assumption of uniform wear?
\(\mu\) × W × R × cosec \(\alpha\)
\(\frac{3}{2}\) × \(\mu\) × W × R × cosec \(\alpha\)
\(\frac{1}{2}\) × \(\mu\) × W × R × cosec \(\alpha\)
\(\frac{1}{4}\) × \(\mu\) × W × R × cosec \(\alpha\)
Correct answer
\(\mu\) × W × R × cosec \(\alpha\)
Sliding contact bearings are also known as:
Sleeve bearings
Plain bearings
Antifriction bearings
Thrust bearings
Correct answer
Sleeve bearings
The bearing characteristic number is given by:
\(\mu\)N/P
2\(\mu\)N/P
\(\mu\)aN/P
Correct answer
A footstep bearing with a radius of \(0.3\) m supports a vertical shaft rotating at \(1200\) rpm under an axial load of \(3000\) N. Assuming uniform pressure and a coefficient of friction of \(0.2\), determine the power lost due to friction.
Correct answer
What is the efficiency value for a hand-made riveted lap joint?
90%
50-75%
100%
10-30%
Correct answer
90%
Which component protects the compressor from damage due to liquid refrigerant?
Thermostat
Expansion valve
Evaporator
Accumulator
Correct answer
Thermostat
Which of the following is a closed-loop refrigeration system?
Icebox
Vapour compression system
Evaporative cooling system
Window ventilation system
Correct answer
Icebox
Which of the following assumptions is not part of the air-standard cycle analysis?
Working fluid is air treated as an ideal gas
Specific heats are temperature-dependent
Compression and expansion are isentropic
Cycle is closed
Correct answer
Working fluid is air treated as an ideal gas
The temperature at the end of isentropic compression in an Otto cycle increases with ______.
Increase in compression ratio
Decrease in compression ratio
Increase in heat addition
Increase in cut-off ratio
Correct answer
Increase in compression ratio
A Carnot engine receives 243 kJ of heat at 673 K and rejects it at 313 K. What is the change in entropy during the heat rejection process?
Correct answer
Which of the following statements correctly identifies the forces acting on a fluid element at rest and explains their balance under fluid-static (hydrostatic) conditions?
Only pressure forces act, and inertial forces always balance them.
Gravity acts as a body force, balanced by a gradient in pressure in the vertical direction.
Viscous forces dominate and are balanced by buoyant forces.
Surface tension acts in the bulk fluid and balances hydrostatic pressure.
Correct answer
Only pressure forces act, and inertial forces always balance them.
Which of the following best describes the behavior of an ideal plastic fluid?
It flows at all shear stresses with constant viscosity.
It behaves like a solid below a certain yield stress and flows like a viscous fluid above it.
It has no viscosity and cannot resist shear stress.
It compresses under pressure and has a shear stress directly proportional to velocity.
Correct answer
It flows at all shear stresses with constant viscosity.
Consider two sealed containers, one filled with a liquid and the other with a gas, both initially at room temperature. The temperature of both containers is gradually increased. Which of the following best describes the expected trend in viscosity and the correct physical reasoning behind it?
Viscosity of both liquid and gas decreases due to increased molecular spacing at higher temperatures.
Viscosity of liquid increases while that of gas decreases due to enhanced cohesive forces and reduced molecular collisions.
Viscosity of liquid decreases due to reduced intermolecular cohesion, while viscosity of gas increases due to increased momentum exchange between molecules.
Viscosity of both liquid and gas increases due to increased kinetic energy and density with temperature.
Correct answer
Viscosity of both liquid and gas decreases due to increased molecular spacing at higher temperatures.
A fluid has a bulk modulus of elasticity K. If a small pressure increase \(\Delta P\) causes a fractional volume decrease \(\Delta V/V\), which of the following statements is correct regarding compressibility and bulk modulus?
Compressibility is defined as the ratio \(\Delta P / (\Delta V/V)\) and is numerically equal to the bulk modulus.
A high bulk modulus implies high compressibility, meaning the fluid volume changes significantly with pressure.
Compressibility is the reciprocal of bulk modulus and represents the fluid’s resistance to deformation under pressure.
A fluid with infinite bulk modulus is perfectly incompressible, as any finite pressure change results in zero volume change.
Correct answer
Compressibility is defined as the ratio \(\Delta P / (\Delta V/V)\) and is numerically equal to the bulk modulus.
Which of the following is the correct SI unit of surface tension, and what does it physically represent?
N/m\(^2\), representing force per unit volume
N/m, representing force per unit length acting along a liquid surface
J/kg, representing energy per unit mass
N\(\cdot\)m, representing torque due to surface interactions
Correct answer
N/m\(^2\), representing force per unit volume
Match the following phenomena with the corresponding fluid property involved:
Column A: Phenomena
A. Ink rising in a blotting paper
B. Resistance offered to flow in narrow tubes
C. Sudden collapse of bubbles near propeller blades
D. Perfect spherical shape of mercury droplets
E. Difficulty in pumping oil at low temperature
Column B: Fluid Properties
Surface tension
Viscosity
Capillarity
Vapour pressure
Compressibility
A-3, B-2, C-4, D-1, E-2
A-2, B-1, C-3, D-4, E-5
A-1, B-3, C-5, D-2, E-4
A-5, B-4, C-2, D-3, E-1
Correct answer
A-3, B-2, C-4, D-1, E-2
Which taper turning method uses swiveling of the compound rest?
Form tool method
Tailstock offset
Compound rest method
Taper turning attachment
Correct answer
Form tool method
In peripheral milling, cutting action occurs at:
Cutter’s face
Cutter’s circumference
Cutter’s shank
Cutter arbor
Correct answer
Cutter’s face
A pressure gauge connected to a vessel shows a gauge pressure of \(-0.3\) bar (vacuum). If the atmospheric pressure is \(1.0\) bar, what is the absolute pressure inside the vessel?
-0.3 bar
Correct answer
Euler’s equation of motion in fluid mechanics represents:
The principle of energy conservation in a moving fluid
The momentum conservation law applied to an inviscid fluid element
The momentum conservation principle restricted to incompressible flows
The momentum conservation law applied to a viscous (real) fluid
Correct answer
The principle of energy conservation in a moving fluid
______ is the example of multipoint tool.
Milling cutters
Welding torch
Casting
Forging
Correct answer
Milling cutters
Which of the following statements correctly distinguishes between laminar flow and turbulent flow in a pipe?
Laminar flow is characterized by smooth, orderly motion; turbulent flow is chaotic with eddies and vortices.
Laminar flow occurs at high Reynolds number; turbulent flow occurs at low Reynolds number.
In laminar flow, fluid particles move randomly, whereas in turbulent flow, they move in parallel layers.
In turbulent flow, viscous forces dominate over inertial forces.
Correct answer
Laminar flow is characterized by smooth, orderly motion; turbulent flow is chaotic with eddies and vortices.
If a liquid-filled container is moving vertically downward with constant acceleration "\(a\)", then which of the following is correct?
Pressure at any point is higher than hydrostatic pressure.
Pressure at any point is equal to atmospheric pressure.
Pressure at a point at depth \(h\) is given by \(p=p_{0}+pgh\)
Pressure at a depth \(h\) is less than hydrostatic pressure due to reduced effective gravity.
Correct answer
Pressure at any point is higher than hydrostatic pressure.
Slotting vertical surfaces requires:
Lower feed per stroke
Use of swarf breaker
Vertical orientation of tool
High lubricant usage
Correct answer
Lower feed per stroke
Dressing a grinding wheel restores cutting efficiency by:
Reducing abrasive grain size
Exposing new abrasive grains
Filling pores with bond
Hardening wheel material
Correct answer
Reducing abrasive grain size
Rotational flow is characterized by which of the following?
Fluid particles rotating about their own axis
Fluid particles follow curved streamlines only
No change in velocity direction
Zero angular velocity
Correct answer
Fluid particles rotating about their own axis
In orthogonal cutting, the friction angle \(\beta\) increases with tool wear because:
Shear plane becomes shorter
Chip formation becomes unstable
Contact zone increases
Rake angle increases
Correct answer
Shear plane becomes shorter
Which type of drilling machine is commonly used in workshops?
Radial
Gang
Portable
Bench
Correct answer
Radial
The drilling machine gets power through:
Foot pedal
Hydraulic pump
Electric motor
Air pump
Correct answer
Foot pedal
From the following options, choose what a grinding wheel is made from.
Wood
Abrasive particles
Cast iron
Copper
Correct answer
Wood
In which of the following is centerless grinding used for?
Gear cutting
Welding
Cylindrical jobs
Boring
Correct answer
Gear cutting
The grade of a grinding wheel refers to:
Abrasive size
Wheel size
Bond strength
Wheel color
Correct answer
Abrasive size
In a two-dimensional incompressible steady flow, at what angle do the streamlines and equipotential lines intersect?
0\(^\circ\)
90\(^\circ\)
45\(^\circ\)
180\(^\circ\)
Correct answer
0\(^\circ\)
Which property must a metal possess to undergo extrusion effectively?
Low Plasticity
High Strain Hardening
High Plasticity
More Toughness
Correct answer
Low Plasticity
Magnetic forming is an example of which process?
Cold forming
Hot forming
Roll forming
High energy rate forming
Correct answer
Cold forming
Arc blow occurs due to which of the following?
Excessive welding speed
Magnetic field around the electrode
Improper joint fit-up
Excessive shielding gas flow
Correct answer
Excessive welding speed
Choose the correct carbon percentage range for high-speed steel from the given options.
2 - 4%
4 - 6%
6 - 10%
Correct answer
Which of these is NOT a tool used in a foundry?
Arbor
Trowel
Slick
Riddle
Correct answer
Arbor
Through what is the globular form of cementite in the structure of steel obtained?
Normalizing
Malleablizing
Spheroidizing
Carbonizing
Correct answer
Normalizing
During hot extrusion of steel, billets are typically heated to a temperature range of approximately:
700 - 950\(^\circ\)C
1100 - 1200\(^\circ\)C
1250 - 1400\(^\circ\)C
1450 - 1680\(^\circ\)C
Correct answer
700 - 950\(^\circ\)C
Which of the following methods can be used to enhance directional solidification in casting?
Chills and chaplets
Chills and padding
Chaplets and padding
Chills, chaplets, and padding
Correct answer
Chills and chaplets
Assertion (A): Cold working increases the strength and hardness of metals. Reason (R): This is because cold working decreases the total number of dislocations per unit volume in the material.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, and R is not a correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct answer
Both A and R are true, and R is the correct explanation of A.
Which of the following statements are correct when comparing cold working to hot working?
Higher forces are required
No heating is needed
Less ductility is required
A better surface finish is achieved
1, 2 and 3
1, 2 and 4
1 and 3
2, 3 and 4
Correct answer
1, 2 and 3
Which of the following materials is most suitable for constructing base structures in machinery to achieve effective vibration damping?
Low carbon steel
Nodular iron
Grey cast iron
White cast iron
Correct answer
Low carbon steel
Steam tables are primarily used to determine thermodynamic properties of which of the following?
Ideal gases
Perfect liquids
Real gas properties of water and steam
Only superheated vapors
Correct answer
Ideal gases
At the critical point of a pure substance, which of the following statements is true?
Latent heat of vaporisation becomes infinity
Latent heat of vaporisation is finite on non-zero
Enthalpy becomes zero
Properties of saturated liquid and vapor become identical
Correct answer
Latent heat of vaporisation becomes infinity
In the case of an ideal gas, the internal energy primarily depends on which of the following properties?
Temperature only
Volume only
Pressure only
Density only
Correct answer
Temperature only
What defines the thermodynamic direction of a natural process in terms of entropy?
Increase in enthalpy
Decrease in temperature
Increase in entropy of isolated system
Increase in Gibbs free energy
Correct answer
Increase in enthalpy
What does the Second Law of Thermodynamics imply about refrigeration systems?
They can operate with zero work input
They must transfer heat from a hot body to a cold one
They must consume work to extract heat from cold body
They violate the First Law of Thermodynamics
Correct answer
They can operate with zero work input
What does entropy generation represent physically in a thermodynamic system?
Energy added to the system
Irrecoverable loss in work potential
Increase in internal energy
Phase transformation
Correct answer
Energy added to the system
For a Francis turbine, the condition for maximum hydraulic efficiency is met when:
The runner blade tips are radial at the outlet
The guide vanes are set at an angle of \(90^{\circ}\)
The absolute velocity of water is radial at the runner outlet
The relative velocity of water is radial at the runner outlet
Correct answer
The runner blade tips are radial at the outlet
In a reaction turbine, the primary function of the draft tube is to:
Prevent air from being drawn into the turbine
Recover kinetic energy by converting it into pressure energy
Increase the rate of water flow through the turbine
Remove eddies formed in the downstream flow
Correct answer
Prevent air from being drawn into the turbine
Identify the pump type from the options given below that does not operate on the positive displacement principle:
Centrifugal pump
Reciprocating pump
Lobe pump
Vane pump
Correct answer
Centrifugal pump
An alternator with 12 poles is coupled to a Francis turbine for power generation at a frequency of \(50 \text{ Hz}\). Determine the constant operating speed of the turbine from the options below:
600 rpm
250 rpm
1000 rpm
500 rpm
Correct answer
600 rpm
Which of the following gives the correct dimensional formula for the specific speed of a turbine?
\(F^{1/2} L^{-3/4} T^{-3/2}\)
\(F^{1/2} L^{-5/2} T^{-3/2}\)
\(F^{3/2} L^{-3/2} T^{-3/2}\)
\(F^{3/2} L^{-3/4} T^{-3/2}\)
Correct answer
\(F^{1/2} L^{-3/4} T^{-3/2}\)
According to Newton’s Second Law of Motion (where m = mass, a = acceleration, v = velocity), which equation correctly represents the law?
Force = \(ma\)
Force = \(mv\)
Force = \(\frac{m}{a}\)
Force= \(\frac{v}{m}\)
Correct answer
Force = \(ma\)
Which force is a contact force?
Friction force
Magnetic force
Gravity force
Electrostatic force
Correct answer
Friction force
When a body is moving on a surface, the force of friction acting on it is called ________ friction.
Static
Dynamic
Limiting
Rolling
Correct answer
Static
The cavitation parameter \(\sigma\) of a centrifugal pump is mathematically expressed in terms of the Net Positive Suction Head (NPSH) and the net head (H). Which of the following formulas is correct?
NPSH / H
NPSH / \(\sqrt{H}\)
NPSH / \(H^{3/2}\)
NPSH / \(H^{2}\)
Correct answer
NPSH / H
In the case of a centrifugal pump, which of the following statements is correct?
The pressure rise in the diffuser section is higher than that produced in the impeller
The slip factor is lowest when the impeller vanes are radial
In multistage pumping, the discharge in series connection is multiplied by the number of stages
The discharge of the pump is inversely proportional to its operating speed
Correct answer
The pressure rise in the diffuser section is higher than that produced in the impeller
From the following, pick the statement that does not hold true about hydraulic turbines:
Specific speed is highest for propeller, followed by Francis, then Pelton
Bulb turbine is a type of Kaplan turbine
Slow runner turbines have a degree of reaction \(> 50%\)
A turbine with \(100%\) reaction will not transfer any energy
Correct answer
Specific speed is highest for propeller, followed by Francis, then Pelton
Which mathematical condition is used to find the centre of gravity of a body using the principle of moments?
Total area \(= 0\)
\(\Sigma\) (Moment of weights) \(= 0\)
\(X = \frac{\Sigma(W \times x_i)}{\Sigma W}\)
\(\Sigma \text{Force} = \text{mass} \times \text{acceleration}\)
Correct answer
Total area \(= 0\)
Supporting a rigid body exactly under its centre of gravity helps in which of the following?
Making it deform
Balancing it in equilibrium
Increasing its weight
Rotating the body faster
Correct answer
Making it deform
Which of the following statements is true about a couple moment and a force moment?
Both depend on the point of reference
Only a couple moment depends on the point of reference
Both are independent of the reference point
A couple moment is independent, but a force moment depends on the point
Correct answer
Both depend on the point of reference
What does the location of a centroid primarily depend on?
Mass only
Shape
Weight only
Volume only
Correct answer
Mass only
Two bodies have masses of \(3 \text{ kg}\) and \(5 \text{ kg}\), moving with velocities of \(4 \text{ m/s}\) and \(6 \text{ m/s}\), respectively, in the same direction. What is the total momentum of the system in \(\text{kg}\cdot\text{m/s}\)?
38
42
48
50
Correct answer
38
If a constant force is applied to a body, which of the following must be true?
The body must move with constant velocity
The acceleration of the body must be constant
The velocity of the body remains constant
The body remains at rest
Correct answer
The body must move with constant velocity
If a man pulls a \(20 kg\) square box with a force of \(100 N\) and it accelerates at \(2 m/s^2\) in the direction of the force, what are the coefficient of friction and the type of friction acting on the box?
\(0.31\), Static friction
\(0.26\), Static friction
\(0.26\), Kinetic friction
\(0.31\), Kinetic friction
Correct answer
\(0.31\), Static friction
What is toughness in materials?
The property of a material that prevents it from regaining its original shape and size after the removal of external loads.
The property of a material that allows it to be extended in two directions or drawn into thin sheets.
The property of a material that doesn’t allow any deformation before failure under external forces.
The property of a material to resist sudden or shock loads without fracturing.
Correct answer
The property of a material that prevents it from regaining its original shape and size after the removal of external loads.
Which of the following is commonly used as a material for manufacturing shafts?
Copper
Titanium
Cast iron
Steel having approximately \(0.4%\) carbon and \(0.8%\) manganese
Correct answer
Copper
For a thin cylinder, if the internal pressure is doubled, the hoop stress:
Doubles
Halves
4 times
6 times
Correct answer
Doubles
Shear force at a section of a beam is:
Algebraic sum of horizontal forces (axial loads)
Algebraic sum of vertical forces (transverse loads)
Algebraic sum of moments
Sum of all forces
Correct answer
Algebraic sum of horizontal forces (axial loads)
What is the point of inflection?
The section at which the bending moment is zero or changes its sign.
The section at which the bending moment is non zero.
The section where the bending moment is maximum.
The section where the bending moment is minimum.
Correct answer
The section at which the bending moment is zero or changes its sign.
A solid circular shaft is subjected to a bending moment \(M\) and a twisting moment \(T\). What is the equivalent twisting moment \(Te\), that will produce the same maximum shear stress as the combination?
\(M+T\)
\(M^2 + T^2\)
\(M-T\)
\(\sqrt{M^2 + T^2}\)
Correct answer
\(M+T\)
What is the correct formula for hoop strain (\(\epsilon_H\)) in thin-walled cylindrical pressure vessels? where \(\sigma_h\) is the hoop stress, \(\sigma_L\) is the longitudinal stress, \(\mu\) is Poisson’s ratio, and E is the elastic modulus of the material
\(\epsilon_H = \frac{1}{3E} [\sigma_h - \mu\sigma_L]\)
\(\epsilon_H = \frac{1}{5E} [\sigma_h - \mu\sigma_L]\)
\(\epsilon_H = \frac{1}{E} [\sigma_h - \mu\sigma_L]\)
\(\epsilon_H = \frac{1}{2E} [\sigma_h - \mu\sigma_L]\)
Correct answer
\(\epsilon_H = \frac{1}{3E} [\sigma_h - \mu\sigma_L]\)
If a material has a Poisson’s ratio of 0. 25 and a Young’s modulus of 70 GPa, what is its shear modulus?
38 GPa
48 GPa
28 GPa
18 GPa
Correct answer
38 GPa
If the modulus of elasticity E=\(206 \text{ GPa}\) and the shear modulus G=\(78 \text{ GPa}\), determine the Poisson’s ratio \(\mu\) and the corresponding bulk modulus K of the material.
Correct answer
A mild steel wire is \(5\text{ mm}\) in diameter and \(1\text{ m}\) long. If it is subjected to an axial tensile load of \(10\text{ kN}\), what is the extension of the wire?(Given: Young’s Modulus \(E=200\text{ GPa}\))
\(6.55\text{ mm}\)
\(4.55\text{ mm}\)
\(2.55\text{ mm}\)
\(3.55\text{ mm}\)
Correct answer
\(6.55\text{ mm}\)
A cantilever beam of length 4 m carries a point load of 5 kN at its free end. What is the bending moment at the fixed end?
30 kNm
20 kNm
40 kNm
50 kNm
Correct answer
30 kNm
The ratio of diameter of gear to number of teeth is known as:
Circular pitch
Diametric pitch
Module
Addendum
Correct answer
Circular pitch
When two equal gears (having equal teeth) connect two shafts whose axes are mutually perpendicular, then the gears are known as:
Spur gear
Mitre gear
Helical gear
Spiral gear
Correct answer
Spur gear
Which one of the following governors is NOT controlled by a spring?
Hartnell Governor
Pickering Governor
Hartung Governor
Watt Governor
Correct answer
Hartnell Governor
The size of a cam depends on:
Pitch curve
Prime circle
Pitch circle
Base circle
Correct answer
Pitch curve
In which type of gear are the teeth straight and parallel to the axis of rotation?
Spur gear
Bevel gear
Helical gear
Spiral gear
Correct answer
Spur gear
What are the standard pressure angles used in involute gears?
10\(^{\circ}\) and 15\(^{\circ}\)
15\(^{\circ}\) and 25\(^{\circ}\)
20\(^{\circ}\) and 25\(^{\circ}\)
Correct answer
10\(^{\circ}\) and 15\(^{\circ}\)
Which of the following is a spring-controlled governor?
Porter governor
Watt governor
Hartnell governor
Proell governor
Correct answer
Porter governor
Which type of gear train has two degrees of freedom?
Simple gear train
Compound gear train
Epicyclic gear train
Reverted gear train
Correct answer
Simple gear train
A gear train in which the axes of the shafts carrying the gears move relative to a fixed axis is known as:
Simple gear train
Epicyclic gear train
Reverted gear train
Compound gear train
Correct answer
Simple gear train
Offset is provided in a cam follower mechanism to:
Achieve high efficiency
Avoid jerk
Increase acceleration
Minimize side thrust
Correct answer
Achieve high efficiency
200 questions in the full paper