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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.
440117, 440223, 440398, 400211
440117
440223
440398
400211
Correct answer
440117
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.
540413, 540721, 550329, 540112
540413
540721
550329
540112
Correct answer
540413
Complete the analogy.
HJ : LN :: TV : ?
ZB
XB
XZ
VX
Correct answer
ZB
Find the missing term in the series:
C, F, I, L, ?
M
P
N
O
Correct answer
M
Find the missing term in the series:
B, H, N, T, ?
Y
Z
A
B
Correct answer
Y
Find the missing number in the series:
6, 11, 21, 36, ?
51
63
61
56
Correct answer
51
Find the missing number in the series:
1, 2, 6, 24, 120, ?
720
600
840
960
Correct answer
720
Complete the analogy.
Inertia : Motion :: Insulation : ?
Heat
Electricity
Water
Cold
Correct answer
Heat
Select the option that does NOT belong to the same category as the others:
Rose, Lotus, Lily, Mango
Mango
Lotus
Lily
Rose
Correct answer
Mango
Select the option that does NOT belong to the same category as the others:
Bacteria, Virus, Amoeba, Wheat
Bacteria
Wheat
Virus
Amoeba
Correct answer
Bacteria
Select the option that does NOT belong to the same category as the others:
Parrot, Pigeon, Bat, Crow
Parrot
Pigeon
Bat
Crow
Correct answer
Parrot
Find the odd one out in the given semantic series based on the pattern identified.
Rat, Elephant, Monkey, Tiger
Rat
Elephant
Monkey
Tiger
Correct answer
Rat
Find the odd one out in the given semantic series based on the pattern identified.
Platinum, Mercury, Copper, Lead
Platinum
Mercury
Copper
Lead
Correct answer
Platinum
Select the option that does NOT belong to the same category as the others:
124, 248, 372, 465
124
248
372
465
Correct answer
124
Four people, A-D, live on floors 1-4. B is on 3; A is on 1; D lives lower than B but not on floor 1.Who lives on floor 4?
C
A
B
D
Correct answer
C
Four friends, Merry, Neel, Olga, and Peter, live on floors 1-4. Merry lives just above Neel. Olga lives just below Peter. Neel does not live on the ground floor (floor 1).
Who lives on floor 3?
Neel
Merry
Olga
Peter
Correct answer
Neel
If PLAY is coded as QMBZ, how is GAME coded?
HBNF
GBNE
HBMF
HAMB
Correct answer
HBNF
If CLOCK is coded as DMPDL, then WATCH is coded as:
XBVJD
XBUDI
XBUJE
XATJD
Correct answer
XBVJD
Statement: "The city council will reward citizens who segregate waste at home".
Which assumption is implicit?
Citizens never segregated waste before
Only rewards can make citizens work
Waste collectors will work faster
Waste segregation improves recycling
Correct answer
Citizens never segregated waste before
Statement: "Metro fares will be reduced by \(20%\) during off-peak hours to manage crowding.
" Which assumption is implicit?
All passengers dislike high fares
Lower fares will shift some passengers to off-peak times
Off-peak metro trains are always empty
Passengers will travel only during peak hours now
Correct answer
All passengers dislike high fares
Four travellers, E, F, G, and H, travel to a city on 1st, 4th, 7th, and 10th October; H travelled after G, F travelled before G, and E is not the last to travel.
Who travelled on the 10th?
E
F
G
H
Correct answer
E
Five people - N, R, O, S, and T - travelled to different cities on the 1st, 3rd, 5th, 7th, and 9th of May. R travelled on the 5th. N travelled two days after R. O did not travel before T. S did not go on the 3rd or 5th. T did not travel on the 3rd.
Who travelled on the 9th?
S
R
N
T
Correct answer
S
Your teammate looks tired after extra work.
What should you say?
"That’s not my problem"
"You work too slowly"
"You should take a short break"
Stay silent
Correct answer
"That’s not my problem"
A colleague disagrees with your idea in a meeting.
The best response is to:
Defend loudly
Listen and ask clarifying questions
Ignore them
Say they are wrong without reason
Correct answer
Defend loudly
Which one is odd?
2, 6, 12, 20, 31, 42
20
31
42
12
Correct answer
20
The sum of two numbers is 50 and their difference is 10. The larger number is:
20
30
35
25
Correct answer
20
The average age of 8 men increases by 2 years when one is replaced by a new man.
The new man is how many years older than the one replaced?
14
15
16
18
Correct answer
14
A new person joins your team and looks lost during the first meeting.
What’s the best social response?
Wait for them to speak
Introduce yourself and brief them
Ignore them
Give them extra work immediately
Correct answer
Wait for them to speak
You meet an important client who appears rushed.
What is the correct approach?
Ask them to relax first
Avoid discussing business
Continue with small talk
Greet briefly and get to the main point
Correct answer
Ask them to relax first
Using all letters of R E T S A C, which valid English word can be formed?
CREATS
CASTRE
CRATES
SECTOR
Correct answer
CREATS
Sales figures drop sharply after a pricing change and customer complaints rise.
What’s the right first step?
Reduce prices back immediately
Increase advertisements
Fire sales staff
Gather customer feedback and analyse impact
Correct answer
Reduce prices back immediately
A valued client requests a major last-minute change that will delay delivery by a week. What’s the best response?
Reject the request instantly
Explain the impact and negotiate feasible deadlines
Accept change without discussion
Charge a penalty without communication
Correct answer
Reject the request instantly
In a city’s road repair plan, most projects are done in affluent areas, while poorer areas are repeatedly delayed.
Which inference is valid?
Roads in poor areas last longer
Authorities prioritise rich areas
Poorer areas refuse repairs
Rich areas pay more tax
Correct answer
Roads in poor areas last longer
In a university panel, professors from urban backgrounds are given 70% of speaking opportunities at national conferences, though they make up only 40% of the faculty.
Which inference is valid?
Urban professors are more qualified
Selection favours urban professors
Rural professors refuse to speak
Urban professors teach better
Correct answer
Urban professors are more qualified
Company revenue rose \(12%\) but profit rose only \(2%\). Which inference is valid?
Costs increased
Sales volume reduced
Product prices rose
Tax rates dropped
Correct answer
Costs increased
A hospital treated \(10%\) more patients this year than last, but the total medical staff was reduced by \(5%\). Patient satisfaction ratings remained unchanged.
Which inference is most valid?
Staff productivity per person increased
Hospital reduced treatment quality
Patients waited for less time
Hospital expanded its facilities
Correct answer
Staff productivity per person increased
A colleague frequently interrupts others in meetings.
What should be concluded?
They are confident leaders
They want to help
They lack listening skills
They are shy
Correct answer
They are confident leaders
If a software shows errors only during peak hours, what should be concluded?
Software is faulty
Server overload causes errors
Users are slow
Errors are fake
Correct answer
Software is faulty
Calculate \((84 \div 7-6) \times (9+3 \div 3)\).
30
40
50
60
Correct answer
30
If % = division, $ = multiplication, # = subtraction, and @ = addition, then calculate 60 % 5 $ 3 # 12 @ 8.
32
30
28
26
Correct answer
32
Rahul says, "She is the daughter of my father’s only son".
How is she related to Rahul?
Daughter
Sister
Niece
Cousin
Correct answer
Daughter
Pointing to a woman, Nina said, "She is the wife of my mother’s brother".
How is the woman related to Nina?
Aunt of Nina
Sister of Nina
Mother of Nina
Cousin of Nina
Correct answer
Aunt of Nina
A car covers 240 km in 4 hours.
Find its speed in \(\text{km/h}\).
50
55
65
60
Correct answer
50
A sum amounts to ₹530 in 2 years and ₹585 in 3 years at simple interest. Find the principal.
₹500
₹510
₹420
₹550
Correct answer
₹500
In the following question, two statements are followed by two conclusions. You have to assume the given statements to be true, even if they seem to be at variance with commonly known facts. Read both the conclusions and then decide which of the given conclusions logically follows from the statements.
Statements:
Some pens are blue.
All blue things are cheap.
Conclusions:
I. Some pens are cheap.
II. No pen is cheap.
Only conclusion II follows
Only conclusion I follows
Both conclusions I and II follow
Neither conclusion I nor II follows
Correct answer
Only conclusion II follows
In the following question, two statements are followed by two conclusions. You have to assume the given statements to be true, even if they seem to be at variance with commonly known facts. Read both the conclusions and then decide which of the given conclusions logically follows from the statements.
Statements:
No fruits are vegetables.
Some vegetables are green.
Conclusions:
I. Some fruits are green.
II. Some vegetables are not fruits.
Only conclusion I follows
Only conclusion II follows
Both conclusions I and II follow
Neither conclusion I nor II follows
Correct answer
Only conclusion I follows
Select the option that does NOT belong to the same category as the others:
17, 23, 29, 35
17
23
29
35
Correct answer
17
Complete the analogy.
BAC : EDF :: GIH : ?
JKL
JMK
LJK
JLK
Correct answer
JKL
Complete the analogy.
Drought : Famine :: Heavy Rain : ?
Hunger
Flood
Plantation
Storm
Correct answer
Hunger
What is the role of Volatile Organic Compounds (VOCs) in the Air Quality Index (AQI) calculations?
They are directly measured and reported in the Air Quality Index (AQI).
They contribute to the formation of ground-level ozone.
They primarily affect water quality, not air quality.
They are only relevant in industrial settings.
Correct answer
They are directly measured and reported in the Air Quality Index (AQI).
Who was the first Indian woman to go into space?
Kalpana Chawla
Sunita Williams
Ritu Karidhal
Tessy Thomas
Correct answer
Kalpana Chawla
Which initiative is increasingly being emphasized by governments to improve Ease of Doing Business (EoDB) through digital means?
Increased tariffs on digital imports.
Increasing paperwork requirements for online transactions.
Restricting internet access for businesses.
Implementation of national single window systems.
Correct answer
Increased tariffs on digital imports.
What is the primary goal of the ISRO-developed "Humanoid Vyommitra"?
Assist in lunar soil sampling
Operate payloads on interplanetary missions
Function as a ground-based AI robot for mission control
Simulate human functions in uncrewed Gaganyaan test flights
Correct answer
Assist in lunar soil sampling
Which Article in the Indian Constitution ensures equality before the law?
Article 14
Article 16
Article 19
Article 21
Correct answer
Article 14
Who has been credited as the Father of the Indian Constitution?
Mahatma Gandhi
Jawaharlal Nehru
Dr. B.R. Ambedkar
Sardar Vallabhbhai Patel
Correct answer
Mahatma Gandhi
What are the objectives of the Indian Space Policy 2023?
Abolish all government involvement in space
Merge ISRO with NASA
Provide a regulatory framework to boost private space activities and innovation
Limit private sector entry
Correct answer
Abolish all government involvement in space
The capital city of Russia, a BRICS member state, is _______.
St. Petersburg
Novosibirsk
Vladivostok
Moscow
Correct answer
St. Petersburg
What is the capital city of the BRICS country Brazil?
Rio de Janeiro
São Paulo
Brasilia
Salvador
Correct answer
Rio de Janeiro
Which of the following oceans is the third-largest ocean in the world?
Pacific Ocean
Atlantic Ocean
Indian Ocean
Arctic Ocean
Correct answer
Pacific Ocean
Which of the following is an expected outcome of the IMEC (India-Middle East-Europe Economic Corridor) project?
Increased global isolation
Stronger economic ties
Increased global conflict
Reduction of technological advancement
Correct answer
Increased global isolation
Which government scheme aims to provide financial assistance to farmers to purchase fertilizers and seeds before each cropping season?
Pradhan Mantri Fasal Bima Yojana
Pradhan Mantri Krishi Sinchayee Yojana
Pradhan Mantri Kisan Samman Nidhi (PM-KISAN)
Soil Health Card Scheme
Correct answer
Pradhan Mantri Fasal Bima Yojana
Which government initiative aims to promote energy efficiency and conservation across various sectors in India?
National Solar Mission
National Mission for Enhanced Energy Efficiency (NMEEE)
National Wind Energy Mission
National Action Plan on Climate Change (NAPCC)
Correct answer
National Solar Mission
While the "Smart Cities Mission" aims to improve urban infrastructure and quality of life, it has faced certain criticisms regarding its implementation and impact. Which of the following is a significant and often cited concern about the Smart Cities Mission?
Its overwhelming focus on greenfield projects rather than retrofitting existing urban areas.
Issues of equity and inclusivity, with concerns that the benefits might disproportionately accrue to certain sections of the population and areas within the selected cities.
A lack of technological integration in the planning and execution of smart solutions.
Excessive decentralization of decision-making, leading to a lack of coordination and standardization across cities.
Correct answer
Its overwhelming focus on greenfield projects rather than retrofitting existing urban areas.
In which year did Vishwanathan Anand become India’s first Chess Grandmaster?
1988
1987
1991
1993
Correct answer
1988
In which year did India win the Junior Hockey World Cup for the first time?
2001
2005
2016
2021
Correct answer
2001
In which year did the Indian Badminton League start?
2011
2013
2015
2017
Correct answer
2011
In traditional Indian wrestling (Kushti), bouts are often held in which of the following?
Wooden platform
Clay or mud pit
Rubber mat
Grass court
Correct answer
Wooden platform
After a seven-year hiatus, which western Indian state reignited the National Games in 2022?
Rajasthan
Gujarat
Maharashtra
Goa
Correct answer
Rajasthan
The 2003 Afro-Asian Games were held in Hyderabad. Which specific sports complex was the primary venue?
Gachibowli Sports Complex
Lal Bahadur Shastri Stadium
Fateh Maidan Sports Complex
Kotla Vijay Bhaskar Reddy Stadium
Correct answer
Gachibowli Sports Complex
In which city did Sachin Tendulkar play his last international match in 2013?
Kolkata
Mumbai
Bengaluru
Chennai
Correct answer
Kolkata
The Syed Modi International Badminton Championship is held annually in which Indian city?
Lucknow
Hyderabad
Mumbai
Chennai
Correct answer
Lucknow
Which region is known for its terracotta temple architecture featuring intricate brick carvings?
Kerala
Punjab
Bengal
Rajasthan
Correct answer
Kerala
Who built Fatehpur Sikri?
Babur
Akbar
Shah Jahan
Jahangir
Correct answer
Babur
Which famous stepwell in Gujarat is a UNESCO World Heritage Site?
Rani ki Vav
Agrasen ki Baoli
Adalaj ni Vav
Dada Harir Vav
Correct answer
Rani ki Vav
The Inheritance of Loss, which won the Man Booker Prize in 2006, was written by:
Jhumpa Lahiri
Arundhati Roy
Kiran Desai
Anita Desai
Correct answer
Jhumpa Lahiri
Which Japanese author has been longlisted multiple times for the Nobel Prize but has NOT yet won it?
Haruki Murakami
Yukio Mishima
Kenzaburo Oe
Banana Yoshimoto
Correct answer
Haruki Murakami
Kho-Kho originated in which Indian state?
Tamil Nadu
Maharashtra
Punjab
Gujarat
Correct answer
Tamil Nadu
Who was the only Indian woman to win a gold medal at the 2018 Commonwealth Games in table tennis?
Manika Batra
Mouma Das
Sutirtha Mukherjee
Madhurika Patkar
Correct answer
Manika Batra
Which of the following Indian chess players defeated Magnus Carlsen in a classical game for the first time in 2022?
Vidit Gujrathi
Arjun Erigaisi
D Gukesh
Rameshbabu Praggnanandhaa
Correct answer
Vidit Gujrathi
In which Indian state is the Hornbill Festival, often referred to as the "Festival of Festivals," celebrated?
Arunachal Pradesh
Meghalaya
Nagaland
Manipur
Correct answer
Arunachal Pradesh
The tribal festival "Bhagoria" involves a unique form of ____.
snake worship
matchmaking
fire rituals
moon worship
Correct answer
snake worship
Which law was replaced by the Bharatiya Nagarik Suraksha Sanhita, 2023 ?
Code of Criminal Procedure (CrPC)
Indian Evidence Act
Code of Civil Procedure
Indian Penal Code
Correct answer
Code of Criminal Procedure (CrPC)
Which of the following is not covered under the ambit of Uniform Civil Code?
Inheritance
Marriage
Murder
Divorce
Correct answer
Inheritance
What is a major reform introduced under the Bharatiya Sakshya Adhiniyam, 2023 regarding electronic evidence?
Electronic evidence is not admissible in criminal trials
Only government data is considered reliable
Screenshots are the only accepted digital form
Electronic records, if properly authenticated, are fully admissible
Correct answer
Electronic evidence is not admissible in criminal trials
Who was the chairperson of the National Human Rights Commission (NHRC) from June 2021 to June 2024?
Justice Arun Kumar Mishra
Justice V Ramasubramanian
Justice Prafulla Chandra Pant
Justice H.L. Dattu
Correct answer
Justice Arun Kumar Mishra
As of May 2024, who was appointed as the Chairperson of the Grappling Committee of India for the Jammu and Kashmir region?
Vinod Sharma
Ravi Kant
Saniyaa Kadree
Swati Saxena
Correct answer
Vinod Sharma
Who is appointed as a Judge of the Supreme Court of India on March 17, 2025?
Joymalya Bagchi
Sanjiv Khanna
Hima Kohli
S. Ravindra Bhat
Correct answer
Joymalya Bagchi
What feature of Kathak distinguishes its footwork technique?
Use of sharp bends and curving body movements
Weight distribution along the horizontal and vertical axis
Extensive use of the toe and ball of the foot
Energetic, expressive free form movement
Correct answer
Use of sharp bends and curving body movements
Which of the following characters in Kathakali represents a noble hero and is depicted with green makeup?
Pacha
Kathi
Kari
Minukku
Correct answer
Pacha
Which dance is performed to express love for nature by the Bodo tribe of Assam?
Bihu
Bagurumba
Dhol Cholom
Mayur Nritya
Correct answer
Bihu
Which of the given statements is/are CORRECT regarding Uranium exploration in India?
Most of the uranium deposits of India occur in the Dharwar deposits.
Uranium mines are located along the Singhbhum copper belt.
Uranium can be obtained from the monazite sands, which occur in the coastal regions of India.
2 and 3 only
1 and 2 only
1 and 3 only
1, 2, and 3
Correct answer
2 and 3 only
Consider the following statements about Coal bed methane (CBM):
India has the largest proven coal reserves in the world and thus holds significant prospects for exploration and exploration of CBM.
It is employed in the manufacturing of cement and methanol and used as compressed natural gas.
The Gondwana sediments of eastern India host all the current CBM-producing blocks.
Which of the statements given above is/are CORRECT?
1 only
2 and 3 only
2 only
3 only
Correct answer
1 only
Which folk music from Goa is known for its themes of love and historical narratives?
Mando
Bhavageete
Kolattam
Kummi
Correct answer
Mando
What is the primary use of "Ovi" music in Maharashtra and Goa?
For storytelling during festivals
For performing rituals
For women’s daily chores and celebrations
For political protests
Correct answer
For storytelling during festivals
Which of the following best describes the main instrument used in "Khongjom Parva" music of Manipur?
Tabla
Flute
Dhol
Mridangam
Correct answer
Tabla
Which of the following factors will determine the type of rural settlements in a country?
1 Nature of terrain
2 Social structure
3 Defence
1 and 2 only
2 and 3 only
1 and 3 only
1, 2, and 3 only
Correct answer
1 and 2 only
Which of the following can be classified as an urban agglomeration?
University Campus
Railway Colony
A Military Cantonment
1 and 3 only
3 only
1 and 2 only
1, 2, and 3
Correct answer
1 and 3 only
What is the name of the portion of the Himalayas located between the Sutlej and Kali rivers?
Punjab Himalayas
Nepal Himalayas
Assam Himalayas
Kumaon Himalayas
Correct answer
Punjab Himalayas
A component whose resistance changes significantly with temperature is called a:
Fixed resistor
Potentiometer
Thermistor
Rheostat
Correct answer
Fixed resistor
A circuit contains three resistors: a \(10\ \Omega\) resistor in series with a parallel combination of two resistors, \(20\ \Omega\) and \(30\ \Omega\). If the total current flowing from the voltage source is \(1.5\ A\), what is the voltage across the \(10\ \Omega\) resistor?
30 v
15 v
20 v
45 v
Correct answer
30 v
Which of the following describes the conventional direction of electric current flow?
Perpendicular to the electric field lines
The direction of the magnetic field lines
From negative to positive terminal
From positive to negative terminal
Correct answer
Perpendicular to the electric field lines
A number of 200 w/200 V incandescent lamps are connected in parallel to a 200 V supply. How many lamps are needed to consume a total power of 800 W?
8
2
4
3
Correct answer
8
An ideal transformer has a primary voltage (Vp) of 100 V and a turns ratio (Np/Ns) of 2:1. What is the secondary voltage (Vs)?
100 v
200 v
50 v
25 v
Correct answer
100 v
Which of the following is a key component of a single-phase transformer?
A brush
A core
A commutator
A rotor
Correct answer
A brush
What is the relationship between the primary current (Ip) and secondary current (Is) in an ideal step-up transformer?
The relationship depends on the load resistance
The primary current is less than the secondary current (Ip<Is)
The primary current is equal to the secondary current (Ip=Is)
The primary current is greater than the secondary current (Ip>Is)
Correct answer
The relationship depends on the load resistance
What happens to the speed of a DC shunt motor if the field current is decreased?
It decreases
It stops completely
It increases
It stays the same
Correct answer
It decreases
What is the yoke of a DC machine?
The outer frame that provides mechanical support and a path for the magnetic flux
The shaft that the rotor rotates on
The field winding of the machine
A part of the commutator that connects to the brushes
Correct answer
The outer frame that provides mechanical support and a path for the magnetic flux
In a DC motor, which of Fleming’s rules helps determine the direction of the force (rotation)?
The right-hand thumb rule
Fleming’s Left-Hand Rule
The left-hand thumb rule
Fleming’s Right-Hand Rule
Correct answer
The right-hand thumb rule
In an induction motor, if the rotor bars are broken, what is the likely effect on the motor’s operation?
The motor’s efficiency will increase
The motor’s starting torque will increase.
The motor’s speed will increase
The motor will run with excessive vibration and noise
Correct answer
The motor’s efficiency will increase
In a synchronous generator, what does the speed of the prime mover directly control?
The output voltage
The output current
The reactive power
The output frequency
Correct answer
The output voltage
Which type of AC motor is also known as a universal motor because it can operate on both AC and DC supplies?
A single-phase induction motor
A synchronous motor
A series-wound motor
A three-phase induction motor
Correct answer
A single-phase induction motor
A single-phase AC circuit has a voltage of 230 V, a current of 10 A, and a power factor of 0. 8 lagging. What is the reading of a wattmeter connected to this circuit?
1840 W
1380 W
2300 W
2500 W
Correct answer
1840 W
In the two-wattmeter method for three-phase power measurement, the readings of the two wattmeters are \(W1=500 W\) and \(W2=1000 W\). What is the power factor of the load?
1 lagging
Correct answer
A single-phase motor rated for \(230 V\), \(50 Hz\), draws \(10 A\) at a power factor of \(0.8\) lagging. If a capacitor is connected in parallel to improve the power factor to \(0.95\) lagging, what is the reactive power supplied by the capacitor?
775 VAR
1380 VAR
605 VAR
1151 VAR
Correct answer
775 VAR
Why should a voltmeter have a very high internal resistance?
To protect the voltmeter from high current
To increase the voltage across the circuit
To increase the total current in the circuit
To minimize the current drawn from the circuit
Correct answer
To protect the voltmeter from high current
Which two coils are the essential components of a typical analog wattmeter?
A current coil and a voltage coil.
An electromagnet and a capacitor
A soft iron core and a permanent magnet
A series coil and a shunt coil
Correct answer
A current coil and a voltage coil.
A system’s power factor is improved from \(0.7\) lagging to \(0.9\) lagging. If the active power is \(100\) kW and the voltage is constant, how does the current change?
It decreases
It increases
It becomes zero
It stays the same
Correct answer
It decreases
A single-phase load has an active power of 10 kW and a reactive power of 10 KVAR. What is the phase angle in degrees?
90°
60°
45°
30°
Correct answer
90°
A motor load of 200 kW at 0. 7 lagging power factor is supplied at 480 V line voltage. Calculate the reduction in line current (in A) if a capacitor bank is installed to improve the power factor to 0. 95 lagging.
77 A
124 A
102 A
90 A
Correct answer
77 A
A three-phase load of 100 kW at 0. 6 lagging power factor is connected to a 400 v line. Calculate the total kVAR of the star-connected capacitor bank required to improve the power factor to 0. 9 lagging.
100 kVAR
Correct answer
A fully charged battery stores \(3.6 \text{ MJ}\) of energy. If it is used to power a \(500 \text{ W}\) device, for how long can the device be powered?
12 hours
2 hours
8 hours
10 hours
Correct answer
12 hours
If a Megger test on a cable’s insulation reads ’near zero’ ohms, what does this indicate?
The insulation is in excellent condition
The Megger is not working properly
There is a short circuit or a faulty insulation
The cable is a very good conductor
Correct answer
The insulation is in excellent condition
Which protection scheme is most suitable for detecting faults between the stator windings of a generator?
Reverse power protection
Under-frequency protection
Overcurrent protection
Differential protection
Correct answer
Reverse power protection
In a three-phase power system, which type of relay is best suited for detecting a phase-to-phase fault, where the currents in the affected phases are significantly higher than normal?
Under-frequency relay
Directional earth-fault relay
Differential relay
Overcurrent relay
Correct answer
Under-frequency relay
The ’RG’ in RG-58 or RG-6 coaxial cables is an acronym for what?
Relative Grounding
Radio Grade
Resistance Gauge
Resistive Grounding
Correct answer
Relative Grounding
The velocity factor (VF) of a coaxial cable is a ratio that compares the speed of a signal in the cable to what?
The speed of light in a vacuum
The speed of sound in air
The resonant frequency of the cable
The speed of a signal in a different cable type
Correct answer
The speed of light in a vacuum
What is the primary characteristic that defines a fractional horsepower motor (FHP)?
It is a type of servomotor.
Its power output is less than 1 horsepower
It can be powered by either AC or DC current.
It operates on fractional voltage
Correct answer
It is a type of servomotor.
A servomotor’s ability to maintain a desired position despite external forces is known as:
Back EMF
Holding torque
Starting torque
Running torque
Correct answer
Back EMF
What is the primary function of a transformer’s core?
To increase the resistance of the windings
To dissipate heat from the windings
To provide a low reluctance path for magnetic flux
To provide mechanical support for the windings
Correct answer
To increase the resistance of the windings
When two coils are placed close to each other, a changing current in the first coil will induce a voltage in the second coil. This phenomenon is called:
Self-induction
Magnetic resistance
Eddy current effect
Mutual induction
Correct answer
Self-induction
If the number of turns in an inductor is doubled, and all other factors remain constant, the self-inductance will:
Be quadrupled
Be doubled
Remain the same
Be halved
Correct answer
Be quadrupled
The core of an electromagnet is removed, but the current is kept constant. What happens to the magnetic flux?
It remains the same
It decreases significantly
It increases significantly
It reverses its direction
Correct answer
It remains the same
The total inductance of two series-connected coils with self-inductances L1 and L2 and mutual inductance \(M\) with their fields opposing is:
\(L_{eq} = \frac{(L_1 - L_2)}{2}\)
\(L_{eq} = L_1 + L_2 - M\)
\(L_{eq} = L_1 + L_2 + 2M\)
\(L_{eq} = L_1 + L_2 - 2M\)
Correct answer
\(L_{eq} = \frac{(L_1 - L_2)}{2}\)
In a circuit, a \(10\Omega\) resistor is connected to the terminals of a network. The Thevenin equivalent circuit is found to be a \(20\text{ V}\) source in series with a \(5\Omega\) resistor. What is the voltage across the \(10\Omega\) load?
20 \(\text{V}\)
10 \(\text{V}\)
Correct answer
What is the equivalent resistance (\(RN\)) of a circuit with a short-circuit current of \(4 A\) and an open-circuit voltage of \(20 V\)?
4\(\Omega\)
5\(\Omega\)
80\(\Omega\)
Correct answer
In a series RLC circuit, what is the phase relationship between the voltage across the inductor and the voltage across the capacitor?
They are \(90^\circ\) out of phase
They are in phase
They are \(180^\circ\) out of phase
They are \(45^\circ\) out of phase
Correct answer
They are \(90^\circ\) out of phase
At the resonant frequency of a series RLC circuit, what is the effect on the circuit’s impedance?
It becomes purely inductive
It becomes purely capacitive
It becomes maximum
It becomes minimum and purely resistive
Correct answer
It becomes purely inductive
What is the purpose of converting a delta (\(\Delta\)) connected load to its equivalent star (\(Y\)) connected load?
To simplify circuit analysis for three-phase systems
To reduce the line current
To change the power factor of the load
To increase the total power of the load
Correct answer
To simplify circuit analysis for three-phase systems
How does the resonant frequency of a series RLC circuit change if the value of the inductor is increased?
The resonant frequency doubles
The resonant frequency increases
The resonant frequency decreases
The resonant frequency remains the same
Correct answer
The resonant frequency doubles
The power factor of a series RLC circuit is leading. Which of the following conditions must be true for the circuit’s net reactance?
The inductive reactance (\(X_L\)) is greater than the capacitive reactance (\(X_C\))
The total impedance (\(Z\)) is purely resistive
The inductive reactance (\(X_L\)) is less than the capacitive reactance (\(X_C\))
The inductive reactance (\(X_L\)) is equal to the capacitive reactance (\(X_C\))
Correct answer
The inductive reactance (\(X_L\)) is greater than the capacitive reactance (\(X_C\))
A parallel RLC circuit at resonance has a resistance of \(50\ \Omega\). The source current is \(10\ A\). What is the total voltage of the source?
5000 v
50 v
5 v
500 v
Correct answer
5000 v
A series RLC circuit has an inductive reactance of 50 \(\Omega\) and a capacitive reactance of 30 \(\Omega\). What is the net reactance?
30 \(\Omega\) (capacitive)
50 \(\Omega\)
40 \(\Omega\)
20 \(\Omega\) (inductive)
Correct answer
30 \(\Omega\) (capacitive)
A load with a power factor of 0. 9 lagging is connected to a 220 V, 50 Hz supply. The apparent power is 11 kVA. What is the reactive power of the load?
Correct answer
A single-phase AC motor draws a current of 5 A from a 240 V supply with a power factor of 0. 8 lagging. What is the true power consumed by the motor?
600 W
1200 W
960 W
1500 W
Correct answer
600 W
A three-phase, \(400 V\), \(50 Hz\) induction motor drive is used to lift a load. The motor has a full-load efficiency of \(85%\)% and a power factor of \(0.8\) lagging. If the motor lifts a \(2000 kg\) load at a constant speed of \(1.2 m/s\), what is the line current drawn by the motor?
\(25.8 A\)
\(33.6 A\)
\(19.7 A\)
\(49.9 A\)
Correct answer
\(25.8 A\)
A 75 kVA, \(6000/400\) V transformer has an iron loss of 400 W and a full-load copper loss of 800 W. What is the efficiency at full load and a 0. 8 lagging power factor?
Correct answer
A transformer with a voltage ratio of 220/110 has a secondary resistance of \(0.05 \Omega\). What is the equivalent secondary resistance referred to the primary side?
\(0.2 \Omega\)
\(0.05 \Omega\)
\(0.1 \Omega\)
\(0.7 \Omega\)
Correct answer
\(0.2 \Omega\)
Two single-phase transformers, Transformer A with a rating of 100 kVA and Transformer B with a rating of 80 kVA, are connected in parallel to supply a total load of 120 kW at a 0. 85 lagging power factor. The per-unit impedance for Transformer A is \(0.015 + j0.04\) (on its 100 kVA base), and for Transformer B is \(0.02 + j0.05\) (on its 80 kVA base). What is the real power (in kW) shared by each transformer?
A takes 73. 4 kW; B takes 46. 6 kW
A takes 87. 2 kW; B takes 46. 6 kW
A takes 65. 6 kW; B takes 46. 6 kW
A takes 43. 5 kW; B takes 46. 6 kW
Correct answer
A takes 73. 4 kW; B takes 46. 6 kW
A 250 V d.c. shunt generator has an armature resistance of \(0.1 \Omega\). If the generated EMF is 255 V, what is the armature current?
25 A
50 A
75 A
100 A
Correct answer
25 A
A \(10 \text{ kW}\), \(200 \text{ V}\) d.c. motor has an efficiency of \(80%\). What is the total power input to the motor?
\(10.25 \text{ kW}\)
\(12.5 \text{ kW}\)
\(8.75 \text{ kW}\)
\(20.5 \text{ kW}\)
Correct answer
\(10.25 \text{ kW}\)
A 20 kW, 250 v, 4-pole, d.c. shunt generator has a full-load armature current of 80 A. The armature resistance is 0. 1 \(\Omega\) and the field resistance is 125 \(\Omega\). If the rotational losses are 800 W, what is the commercial efficiency of the generator at full load?
Correct answer
A 3-phase, 60 Hz induction motor has a synchronous speed of 1200 rpm. If the rotor speed is 1140 rpm, what is the slip?
1%
2%
5%
10%
Correct answer
1%
A 3-phase, 6-pole, 50 Hz induction motor has a synchronous speed of 1000 rpm. If the motor runs at 950 rpm, what is the slip?
5%
10%
15%
20%
Correct answer
5%
A single-phase, \(230 V\), \(50 Hz\) induction motor has a main winding impedance of \(Z_M=(6+j8) \Omega\). A capacitor is connected in series with the auxiliary winding to make its current lead the main winding current by \(90^\circ\). The auxiliary winding resistance is \(10 \Omega\) and its inductive reactance is \(15 \Omega\). What is the required capacitive reactance?
Correct answer
Two identical DC shunt generators, each with a generated EMF of 240 V and an armature resistance of 0. 1 \(\Omega\), are operating in parallel. If they share a total load current of 150 A equally, what is the terminal voltage of the busbar?
Correct answer
A 220 V DC shunt generator has a full-load current of 60 A and an armature resistance of 0.2 \(\Omega\). The armature reaction reduces the flux per pole by 4%. If the no-load generated EMF is 225 V, what is the full-load terminal voltage?
204 V
216 V
225 V
254 V
Correct answer
204 V
Two coils are wound on a common magnetic core. The core has a mean path length of 40 cm, a cross-sectional area of 8 cm\(^2\), and a relative permeability of 3000. Coil 1 has 600 turns, and coil 2 has 200 turns. Assuming perfect coupling between the coils, what is the mutual inductance between them?
Correct answer
An electroplating process is used to deposit a \(15 \mu\ m\) thick layer of nickel on a component with a surface area of 0.05 m2. The density of nickel is 8900 kg/m3, and its electrochemical equivalent is 0.304 mg/C. If the process is to be completed in 2 hours, what current is required?
3.05 A
6.75 A
12.2 A
15.5 A
Correct answer
3.05 A
A resistance furnace with a heating element of \(50 \Omega\) is used to melt \(2\) kg of a material. The material has a specific heat capacity of \(500 \text{ J}/(\text{kg}\cdot\text{K})\) and a latent heat of fusion of \(250 \text{ kJ/kg}\). The furnace operates at \(250 \text{ V DC}\). If the initial temperature is \(25 ^{\circ}\text{C}\) and the melting point is \(800 ^{\circ}\text{C}\), and the furnace efficiency is \(80%\), how long will it take to melt the material completely?
Correct answer
A BJT is biased in a common-emitter configuration. The collector current is 5 mA and the base-to-emitter voltage (\(V_{BE}\)) is 0. 7 V. If the common-emitter current gain, \(\beta\), is 100, what is the base resistance (\(R_B\)) if the supply voltage is 10 V?
186 k\(\Omega\)
246 k\(\Omega\)
374 k\(\Omega\)
486 k\(\Omega\)
Correct answer
186 k\(\Omega\)
A generator is rated at 25 MVA, 11 kV with an impedance of 12%. What is the fault current if a short-circuit occurs at its terminals?
10933 A
13120 A
15496 A
18721 A
Correct answer
10933 A
A voltage divider bias circuit for a BJT has \(R_1=47\space k\Omega\) and \(R_2=10 \space k\Omega\). If the supply voltage is 15 V, what is the base voltage, assuming a high input impedance BJT?
Correct answer
A full-wave rectifier has a load resistance of 500 \(\Omega\). The input signal is a sine wave with a peak value of 100 V. What is the average power dissipated in the load?
10 W
12 W
13 W
14 W
Correct answer
10 W
A half-wave rectifier is supplied by a 10 V (rms) AC source with a frequency of 50 Hz. The transformer has a secondary winding resistance of 1 \(\Omega\). The load resistance is 100 \(\Omega\). What is the ripple factor of the output?
1.21
11.21
13.21
2.21
Correct answer
1.21
A Zener diode regulator circuit is designed to provide a constant output voltage of 10 V. The load current is expected to be between 20 mA and 100 mA. The minimum Zener current is 5 mA. The input voltage is 15 V. What is the value of the series resistance required?
Correct answer
A coaxial cable has a characteristic impedance of 50 \(\Omega\) and a dielectric constant of 2. 25. What is the ratio of the outer conductor diameter to the inner conductor diameter?
2.4
3.5
4.8
5.6
Correct answer
2.4
A utility company penalizes a customer for operating with a power factor below 0. 85. If a load has a real power of 1500 kW and a reactive power of 1200 kVAR, what is the current power factor?
Correct answer
Which of the following is a method to reduce the Corona effect in a transmission line?
Using conductors with a smaller diameter
Using bundled conductors
Using a smaller spacing between conductors
Using a single conductor instead of a bundled conductor
Correct answer
Using conductors with a smaller diameter
In a medium transmission line, which of the following circuit models is most commonly used?
No-load model
Nominal-T or Nominal-\(\pi\) model
Long line model (Distributed parameters)
Short line model (Lumped resistance and inductance only)
Correct answer
No-load model
Corona power loss increases with:
High air density
Smoothness of the conductor surface
Increase in line voltage
Increase in conductor diameter
Correct answer
High air density
How does doubling the conductor spacing (D) while keeping the geometric mean radius (r') constant affect the inductance L?
It remains the same
It increases by an amount proportional to ln(2)
It increases by a constant amount
It doubles
Correct answer
It remains the same
A three-phase overhead transmission line has a conductor diameter of \(1.2\) cm. The conductors are arranged in a horizontal plane with a spacing of \(3\) m between adjacent conductors. What is the geometric mean distance (GMD)?
\(3.78\) m
\(5.62\) m
\(7.94\) m
\(9.46\) m
Correct answer
\(3.78\) m
A three-phase, \(50\text{ Hz}\) transmission line has a capacitance of \(15\text{ nF/km}\) and a length of \(100\text{ km}\). What is the total charging current at \(400\text{ kV}\) line-to-line?
\(87.2\text{ A}\)
\(108.8\text{ A}\)
\(188.4\text{ A}\)
\(209.6\text{ A}\)
Correct answer
\(87.2\text{ A}\)
A voltmeter with a sensitivity of 1000 \(\Omega\)/V is used on its 50 V range. What is the internal resistance of the voltmeter?
50 k\(\Omega\)
100 k\(\Omega\)
150 k\(\Omega\)
200 k\(\Omega\)
Correct answer
50 k\(\Omega\)
An ammeter of resistance 0.8 \(\Omega\) measures a current of 1 A when connected in a circuit. If a shunt of 0.2 \(\Omega\) is connected in parallel, what is the new total current in the circuit if the supply voltage remains unchanged?
5 A
10 A
15 A
20 A
Correct answer
5 A
A 2000 W heater is used for 2 hours. How much energy is consumed in kilowatt-hours (kWh)?
4 kWh
6 kWh
8 kWh
10 kWh
Correct answer
4 kWh
A heater with a resistance of 20 \(\Omega\) draws a current of 10 A. What is the voltage across the heater?
200 v
400 v
600 v
800 v
Correct answer
200 v
A 0-500 V voltmeter has an error of \(\pm5%\) of full-scale deflection. If the true voltage is 50 V, then find its range of reading.
25 V to 75 V
0 V to 500 V
0 V to 50 V
Correct answer
25 V to 75 V
Minimum ground clearance of an overhead line for low and medium voltage lines along a street is:
4 m
3 m
Correct answer
Earth resistance of any earthing should NOT be more than:
100 ohms
10 ohms
15 ohms
5 ohms
Correct answer
100 ohms
In casing and capping wiring, the capping is typically made from which material?
PVC plastic
Steel strip
Seasoned wood
Rubber
Correct answer
PVC plastic
According to the Indian Electricity Rules, the permissible frequency fluctuation range is:
\(\pm 3%\)
\(\pm 0. 5%\)
\(\pm 0%\)
\(\pm 5%\)
Correct answer
\(\pm 3%\)
In case of low voltage, variation from the declared voltage should be:
Less than 6%
More than 5%
Less than 2. 5%
More than 2. 5%
Correct answer
Less than 6%
Use Norton’s Theorem to find the short-circuit current when Thevenin’s voltage is 12 V and resistance is 6\(\Omega\).
1 A
2 A
3 A
4 A
Correct answer
1 A
Transmission efficiency is maximum when:
Copper loss = Dielectric loss
Copper loss = Constant loss
Copper loss = Corona loss
Voltage = \(0\)
Correct answer
Copper loss = Dielectric loss
The skin effect increases with:
Decrease in frequency
Increase in frequency
Decrease in diameter
Decrease in current
Correct answer
Decrease in frequency
The bundled conductors in EHV transmission are used to:
Increase corona loss
Reduce corona and reactance
Increase resistance
Increase weight
Correct answer
Increase corona loss
What is the need for separate earthing for electronic equipment.
To reduce electromagnetic interference
To reduce current
To increase load
To increase voltage
Correct answer
To reduce electromagnetic interference
Which among these plants has highest efficiency?
Gas turbine
Diesel
Thermal
Combined cycle
Correct answer
Gas turbine
If diversity factor increases, the overall generation capacity required:
Increases
Decreases
Remain Same
Becomes Zero
Correct answer
Increases
Design a wiring layout for a workshop with \(3-phase\) machines.
Use single-phase system
Use series connection
Use DC system
Use \(3-phase\) \(4-wire\) system
Correct answer
Use single-phase system
In a servo drive, integral control action helps:
Reduce steady-state error
Increase transient overshoot
Increase phase difference
Reduce field current
Correct answer
Reduce steady-state error
In hydroelectric plants, penstock is used for:
Storing water
Carrying water to the turbine
Controlling the turbine speed
Measuring flow rate
Correct answer
Storing water
A shunt with a positive temperature coefficient is used in high DC current measurement. As temperature rises:
Measured current increases
Measured current decreases
Measurement is unaffected
Voltage drops to zero
Correct answer
Measured current increases
Which device stores energy in a magnetic field when current flows through it?
Resistor
Inductor
Capacitor
Relay
Correct answer
Resistor
A capacitor blocks which type of current in a steady-state condition?
AC
DC
Pulsating current
No current
Correct answer
AC
Which component is designed to oppose sudden changes in current?
Inductor
Resistor
Capacitor
Switch
Correct answer
Inductor
200 questions in the full paper