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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.
720404, 720314, 700219, 720512
720404
720314
700219
720512
Correct answer
720404
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.
501428, 501902, 511632, 501750
501428
501902
511632
501750
Correct answer
501428
Complete the analogy.
W : U :: S : ?
R
Q
O
T
Correct answer
R
Complete the analogy.
GIK : MPS :: QSU : ?
YDF
WZC
WZD
RTX
Correct answer
YDF
Complete the analogy.
DFHJ : LNPR :: SUWY : ?
ACEG
ABCE
ACBE
ZCDE
Correct answer
ACEG
Find the missing term in the series: A, Z, B, Y, C, ?
D
X
W
E
Correct answer
D
Find the missing term in the series:
B, C, F, E, J, ?
I
H
K
G
Correct answer
I
Find the missing number in the series:
5, 10, 15, 20, ?
22
25
28
30
Correct answer
22
Find the missing number in the series:
3, 8, 15, 24, ?
31
33
35
37
Correct answer
31
Find the missing number in the series:
20, 18, 15, 11, ?
7
8
5
6
Correct answer
7
Complete the analogy.
Architect : Building :: Sculptor : ?
Museum
Stone
Chisel
Statue
Correct answer
Museum
Complete the analogy.
Botanist : Plants :: Entomologist : ?
Animals
Bacteria
Fungi
Insects
Correct answer
Animals
Find the odd one out in the given semantic series based on the pattern identified.
Orange, Guava, Papaya, Grapes
Orange
Guava
Papaya
Grapes
Correct answer
Orange
In a society, houses are numbered 5, 7, 9, 11, 13, and 15: Q lives two houses above O; R lives just above Q; S lives at the highest-numbered house; T lives at the lowest-numbered house.
Who lives at 11?
O
R
Q
S
Correct answer
O
If TRAIN is coded as UQBHO, then how is PLANE coded?
QKBMF
QKBND
QKBNF
QKCMF
Correct answer
QKBMF
In a certain code, ARRANGE is written as YWWYSLC (every consonant +5, every vowel -2, positions unchanged).
How is SYSTEM coded?
XDBZJR
XEBZKR
XDXCYR
XEBZJR
Correct answer
XDBZJR
Statement: "To control crowding, entry to the park will be by online booking only".
Which conclusion follows?
Park staff prefer online work
Online booking is free for all
The number of visitors is currently too high
Citizens dislike visiting parks in the evenings
Correct answer
Park staff prefer online work
Four friends, R, K, S, and A, travelled to a city in April on dates: 4, 11, 18, and 25. K went exactly one week before S. A did not go on the 25th. R travelled after S. A travelled on the 18th.
Who travelled on the 11th?
R
K
S
A
Correct answer
R
Six people, M-R, travelled to a city on 6, 9, 12, 15, 18, and 21 June; Q travelled between N and R, M travelled after P, N travelled immediately after M, P did not travel first, R travelled last.
Who went on the 15th?
Q
P
N
M
Correct answer
Q
After a difficult team project, two members openly blame each other for failures. You are their supervisor.
What shows the highest emotional intelligence?
Avoid involvement and let them solve it
Criticise both in front of the team
Meet each member privately and explore their perspectives
Remove both from the team
Correct answer
Avoid involvement and let them solve it
In the dictionary, which comes first?
CRY, CRYPT, CRYSTAL, CRYING
CRYING
CRYSTAL
CRY
CRYPT
Correct answer
CRYING
Which comes last alphabetically in the dictionary?
BRIGHT, BRIM, BRINE, BRISK
BRIGHT
BRIM
BRINE
BRISK
Correct answer
BRIGHT
If 25% of a number is 15, then what is the number?
50
80
70
60
Correct answer
50
A pipe fills a tank in 6 hours, another in 4 hours. Together they fill in:
2 hr 12 min
2 hr 24 min
2 hr 30 min
2 hr 40 min
Correct answer
2 hr 12 min
A can do a job in 10 days, B in 15 days. They start together but B leaves after 5 days.
In how many more days will A finish the work?
3.5
5.8
Correct answer
In group work, a member suggests a method you think may not work.
Best way to respond?
Appreciate the idea, discuss concerns politely
Reject it immediately
Laugh at it
Ignore suggestion
Correct answer
Appreciate the idea, discuss concerns politely
In a team video call, one member’s connectivity is poor and repeats questions you already answered.
What’s the socially intelligent response?
Answer patiently again
Tell them to check the recording later
Ignore their questions
Say they are wasting time
Correct answer
Answer patiently again
Arrange the letters V I R A T C O I to form a meaningful English word.
CAVITOIR
COVRIAT
VICTOAIR
VICTORIA
Correct answer
CAVITOIR
Using all letters of E D E R M A T O, which valid word can be formed?
DREAMOTE
MODERATE
TEARDOME
MATERODE
Correct answer
DREAMOTE
Your friend asks for confidential company data.
What should you do?
Refuse politely and explain it’s not allowed
Share as it’s a friend
Share partly
Ignore the question
Correct answer
Refuse politely and explain it’s not allowed
You notice a team member appears upset after a team reshuffle.
What is the best decision?
Ignore their feelings
Discuss and address their concerns in private
Announce the issue publicly
Change the team structure again
Correct answer
Ignore their feelings
A store has fewer female cashiers than male cashiers, despite females applying in equal numbers.
What is likely inferred?
Prefer males as cashiers
Females avoid cashier jobs
Male cashiers are trained better
Cashier jobs require strength
Correct answer
Prefer males as cashiers
River water level rose by 2 metres after the dam gates were closed.
Which inference is valid?
Rainfall increased
Dam closure stopped the downstream flow
Water usage increased
Tourists visited more
Correct answer
Rainfall increased
A community park was renovated at double the budget but visitor numbers remained the same.
Which is the best judgement?
Renovation improved park quality
Visitors dislike changes
Money was not utilised efficiently to attract visitors
Park is too far
Correct answer
Renovation improved park quality
Find the value of \(15\times3-(12+9\div3)\).
35
30
42
33
Correct answer
35
Find the result of (32\(\div\)4+14)\(\times\)(15\(\div\)3-4).
36
22
42
48
Correct answer
36
Work out \({(500\div25)\times(72\div8)}+{(180\div12)\times(45\div9)}\)
184
255
380
476
Correct answer
184
If @ = division, % = addition, $ = multiplication, and # = subtraction, calculate 64 @ 8 % 12 $ 3 # 10.
27
34
28
26
Correct answer
27
The rainfall measured for three years was 600 mm, 630 mm, and 662 mm.
Expected rainfall in the 5th year is
718
745
739
732
Correct answer
718
An investment grows by 15% in the first year, 20% in the second, and 25% in the third. If the initial investment ₹ 80,000, what is its value after 3 years?
138,000
135,000
139,000
137,999
Correct answer
138,000
A and B are brothers. C is the daughter of B.
How is A related to C?
Father
Uncle
Brother
Cousin
Correct answer
Father
Pointing to a girl, Rohit said, "She is the daughter of my mother’s only son".
How is the girl related to Rohit?
Sister of Rohit
Daughter of Rohit
Niece of Rohit
Cousin of Rohit
Correct answer
Sister of Rohit
A 250 m long train crosses a platform in 20 seconds at a speed of 72 km/h.
What is the length of the platform?
150 m
200 m
250 m
300 m
Correct answer
150 m
The sum of the present ages of A and B is 50 years. After 10 years, A’s age will be twice B’s age.
Find B’s present age in years.
Correct answer
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 books are papers.
Some papers are covers.
Conclusions:
I. Some books are covers.
II. No book is cover.
Only conclusion I follows
Only conclusion II follows
Neither conclusion I nor II follows
Both conclusions I and II follow
Correct answer
Only conclusion I 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:
All gold is precious.
Some precious things are rare.
Conclusions:
I. Some gold is rare.
II. All rare things are gold.
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
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 cats are animals.
Some animals are dogs.
Conclusions:
A. Some cats are dogs
B. All cats are dogs
C. Some dogs are cats
D. Some animals are cats
Only A
Only D
Only C
Only B
Correct answer
Only A
In the following questions, a few statements are given, followed by some conclusions. Consider the statements to be true, even if they appear to contradict commonly known facts. Read all the conclusions carefully and decide which of them logically follows from the given statements.
Statements:
All rats are dogs.
Some dogs are cows.
No cow is a cat.
Conclusions:
I. Some rats are cows.
II. Some dogs are cats.
III. No cat is a cow.
Only I and III follow
Only III follows
Only II and III follow
All follow
Correct answer
Only I and III follow
Mall footfall rose by \(25%\) in the festive season without extra advertisements.
Which inference is valid?
New shops opened
Festivals attracted more visitors
Parking space increased
Prices were reduced
Correct answer
New shops opened
How can you show empathy in conversation?
Interrupt often
Maintain eye contact and nod
Check your phone
Talk about yourself more
Correct answer
Interrupt often
Which of the following is a key criticism of the Human Development Index (HDI) education component?
It only considers primary education.
It does not account for the quality of education.
It overemphasizes higher education.
It excludes vocational training.
Correct answer
It only considers primary education.
What is the significant environmental impact of increased levels of nitrogen oxides (NOx) in urban areas?
Depletion of the ozone layer
Formation of ground-level ozone and smog
Increased ocean acidification
Soil salinization
Correct answer
Depletion of the ozone layer
The primary focus of the Cartosat series of satellites is:
Solar research
Communication
Earth observation and mapping
Astronomy
Correct answer
Solar research
____ curve shows the various combinations of two commodities that can be produced with the given resources.
Indifference
Phillips
Production possibility
Laffer
Correct answer
Indifference
What is the importance of the Vikram lander in the Chandrayaan-3 mission?
It orbited Mars successfully
It performed a soft landing near the lunar south pole
It launched Aditya-L1 from lunar orbit
It deployed the Mangalyaan rover
Correct answer
It orbited Mars successfully
What is guaranteed by Article 32 of the Indian Constitution?
Right to Education
Right to Equality
Right to Constitutional Remedies
Right to Freedom of Speech
Correct answer
Right to Education
Which amendment of the Indian Constitution added the provision for the reservation of seats for women in local bodies?
77th Amendment
70th Amendment
73rd Amendment
71st Amendment
Correct answer
77th Amendment
What does P in the PESTAL macroeconomic analysis stand for?
Price
Profit
Private
Political
Correct answer
Price
Which of the following is the CORRECT procedure for the amendment of the Indian Constitution?
By the President alone
By the Supreme Court
By Parliament through a simple majority
By Parliament with a special majority
Correct answer
By the President alone
The Mansabdari system introduced by Akbar included:
Military rank only
Land grant only
Civil and military rank
Revenue farming
Correct answer
Military rank only
Who among the following is NOT associated with Sufi Chishti order in India?
Nizamuddin Auliya
Moinuddin Chishti
Nasiruddin Chiragh
Shah Waliullah
Correct answer
Nizamuddin Auliya
The authority to establish or dissolve Legislative Councils in states is vested in:
The Parliament
The President of India
The Supreme Court
The State Governor
Correct answer
The Parliament
Under which constitutional provision can the Union Parliament legislate for two or more states with their consent?
Article 249
Article 250
Article 253
Article 252
Correct answer
Article 249
Which mechanism is used to allocate financial resources between the Union and the States?
The Planning Commission
The Economic Survey
The Budget Committee
The Finance Commission
Correct answer
The Planning Commission
Which Article mandates that state governments adhere to the laws made by the Union?
Article 254
Article 256
Article 260
Article 258
Correct answer
Article 254
Which South Asian country has the lowest population?
Bhutan
Maldives
Sri Lanka
Nepal
Correct answer
Bhutan
Which Middle Eastern country is a key part of the IMEC (India-Middle East-Europe Economic Corridor) corridor?
Iran
Saudi Arabia
Libya
Algeria
Correct answer
Iran
Where is Chabahar Port located?
Iran
Pakistan
India
Afghanistan
Correct answer
Iran
The "DigiLocker" initiative by the Government of India serves what primary purpose?
To provide free internet access to all citizens.
To offer a secure cloud-based platform for storage and sharing of digital documents and certificates.
To track the movement of goods and services across the country.
To facilitate online voting in national and state elections.
Correct answer
To provide free internet access to all citizens.
Consider the following statements regarding the "National Green Hydrogen Mission":
I. It aims to make India a global hub for the production, utilization, and export of Green Hydrogen.
II. Green Hydrogen under this mission is primarily produced using fossil fuels with carbon capture technology.
III. The mission supports research and development in Green Hydrogen technologies.
IV. A key objective is to reduce India’s reliance on imported fossil fuels.
Which of the above statements accurately reflect the goals and approach of the National Green Hydrogen Mission?
I and III only
II and IV only
I, III, and IV only
II and III only
Correct answer
I and III only
Where is ’Garbhagriha’ located in Vastu Shastra-based temple designs?
Vayavya (North-West)
Agni Kon (South-East)
Brahmasthan (Central point)
Nairutya (South-West)
Correct answer
Vayavya (North-West)
Where is the tomb of Sher Shah Suri located?
Delhi
Sasaram
Agra
Lahore
Correct answer
Delhi
The Hill Area Development Programme was started during the ________ Five-Year Plan.
First
Second
Third
Fifth
Correct answer
First
Who was awarded the Man Asian Literary Prize in 2007 for Wolf Totem, a work often mistaken for an Indian novel?
Aravind Adiga
Jiang Rong
Kiran Desai
Tash Aw
Correct answer
Aravind Adiga
The Industrial Disputes Act was commenced in the year _______, having significant implications for industrial relations during the early Five-Year Plans.
1947
1953
1961
1965
Correct answer
1947
Which policy measure during the Sixth Five-Year Plan encouraged private sector participation in trade?
Complete nationalization of industries
Removal of all export incentives
Introduction of high tariffs on all imports
Liberalization of industrial licensing
Correct answer
Complete nationalization of industries
Which novel by Kazuo Ishiguro won the Booker Prize in 1989 and explores themes of memory, regret, and duty through the life of a British butler?
Never Let Me Go
The Remains of the Day
An Artist of the Floating World
When We Were Orphans
Correct answer
Never Let Me Go
The policy of "Divide and Rule," often employed by the British in India, aimed to:
Promote unity and cooperation among different Indian communities.
Weaken the nationalist movement by fostering divisions based on religion, caste, and region.
Establish a single, unified administrative system across British India.
Encourage inter-caste marriages and social reforms.
Correct answer
Promote unity and cooperation among different Indian communities.
The "Quit India Movement" of 1942, while ultimately suppressed by the British, had a significant impact on the trajectory of the Indian nationalist struggle. What was a key characteristic of this movement that distinguished it from earlier forms of protest?
It was primarily led by moderate leaders advocating for constitutional reforms.
It emphasized non-violent civil disobedience and cooperation with the British war effort.
It witnessed widespread spontaneous uprisings and a call for the immediate end of British rule, even without clear centralized leadership after the arrest of major leaders.
It was largely confined to urban centers and had limited participation from rural populations.
Correct answer
It was primarily led by moderate leaders advocating for constitutional reforms.
What is the purpose of introducing Uniform Civil Code (UCC) in India ?
Introduce a uniform criminal code
Replace the Constitution of India
Abolish the caste system
Standardize personal laws across all religions
Correct answer
Introduce a uniform criminal code
Which of the following group is directly impacted by the Uniform Civil Code?
Only government employees
Only residents of urban areas
All Indian citizens
Only Hindus
Correct answer
Only government employees
Which of the following type of documentary evidence is admissible without further proof?
Handwritten anonymous letter
Audio recordings without context
Certified copies of public documents
Scanned copy without metadata
Correct answer
Handwritten anonymous letter
Who became the first woman to be appointed as the Director General of the Central Industrial Security Force (CISF)?
Kiran Bedi
Nina Singh
Archana Ramasundaram
Meera Borwankar
Correct answer
Kiran Bedi
Which Indian state launched the ’Mukhyamantri Ladli Behna Yojana’ for the welfare of women?
Uttar Pradesh
Madhya Pradesh
Bihar
Rajasthan
Correct answer
Uttar Pradesh
Who assumed charge as the Chief of the Air Staff in 2024 after serving as the Vice Chief of Air Staff?
Air Marshal Narmdeshwar Tiwari
Air Marshal Amar Preet Singh
Air Marshal R.K.S. Bhadauria
Air Marshal Sujeet Pushpakar Dharkar
Correct answer
Air Marshal Narmdeshwar Tiwari
Who was the first woman freedom fighter from Uttarakhand to be jailed during the freedom struggle?
Tulsi Devi Rawat
Vijaylakshmi Pandit
Bishni Devi Shah
Durga Devi Pant
Correct answer
Tulsi Devi Rawat
Who among the following was the first woman chief minister of Uttar Pradesh?
Sucheta Kripalani
Aruna Asaf Ali
Usha Mehta
Matangini Hazra
Correct answer
Sucheta Kripalani
Which tribal community is primarily associated with the Jhumar dance in Jharkhand?
Santhal
Gond
Oraon
Bhil
Correct answer
Santhal
What are the ’Navarasas’ in dance?
Dance styles
Nine emotions portrayed in dance
Dance costumes
Classical instruments used in dance
Correct answer
Dance styles
Which among the following animals were NOT known to the Harappans?
Elephant
Sheep
Cow
Horse
Correct answer
Elephant
Identify the correct pairs related to social structure.
Brahmana - Ritual priest
Vaishya - Warrior class
Shudra - Service provider
1 and 3 only
2 and 3 only
1 only
1, 2, and 3
Correct answer
1 and 3 only
Which of the following regions does NOT constitute the hinterland of Mumbai port?
Uttar Pradesh
Gujarat
Maharashtra
Goa
Correct answer
Uttar Pradesh
Which of the given statements is CORRECT with reference to Paradip Port?
It is situated on the Krishna-Godavari Delta.
It is a deep-water port in India.
It was developed mainly for petroleum exports.
The main hinterland of this port is Andhra Pradesh.
Correct answer
It is situated on the Krishna-Godavari Delta.
With reference to the location of Industries, consider the following statements:
Heavy machines, machine tools, and heavy chemical industries are located near the high-demand areas, as these are market-oriented industries.
Cotton textile industry and industries based on perishable raw materials are located near the source of raw materials because they use perishable raw materials, which need immediate processing.
Aluminium manufacturing industries are located near sources of power because they are power-intensive and require a huge quantum of electricity.
Which of the statements given above is/are CORRECT?
1 and 2 only
2 only
1 and 3 only
1, 2, and 3
Correct answer
1 and 2 only
What does ’svar’ mean in the context of Indian music?
Tone or note
Rhythm cycle
Scale
Melody
Correct answer
Tone or note
The Kamaicha is a bowed lute traditionally played in which region of India?
Punjab
Rajasthan
Kerala
Tamil Nadu
Correct answer
Punjab
The Katkari Tribes, sometimes seen in the news, is largely found in which of the following states?
Maharashtra
Telangana
Karnataka
Tamil Nadu
Correct answer
Maharashtra
What is the CORRECT order to arrange the states in descending order according to the population density in India (2011)?
Bihar, West Bengal, Kerala, Uttar Pradesh
Bihar, Uttar Pradesh, Kerala, West Bengal
West Bengal, Bihar, Kerala, Uttar Pradesh
Uttar Pradesh, Bihar, West Bengal, Kerala
Correct answer
Bihar, West Bengal, Kerala, Uttar Pradesh
Which of the following rivers is an example of inland drainage in India?
Ghaggar River
Mahi River
Tapi River
Krishna River
Correct answer
Ghaggar River
The river that rises near Rohtang Pass in Kullu, draining the western slope of the Pir Panjal and the northern slope of the Dhauladhar Range, is the ______ River.
Chenab
Sutlej
Indus
Ravi
Correct answer
Chenab
An electronic component that stores electrical energy in an electric field is known as a(n):
Diode
Inductor
Capacitor
Transistor
Correct answer
Diode
A 10 \(\mu F\) capacitor and a 20 \(\mu F\) capacitor are connected in parallel. This combination is then connected in series with a 30 \(\mu F\) capacitor. What is the total equivalent capacitance of the circuit?
25 \(\mu F\)
10 \(\mu F\)
15 \(\mu F\)
60 \(\mu F\)
Correct answer
25 \(\mu F\)
Which of the following is an example of a secondary battery?
Lithium-ion battery
Alkaline battery
Mercury battery
Zinc-carbon battery
Correct answer
Lithium-ion battery
A battery pack is made of three cells connected in series. Each cell has a nominal voltage of \(1.5 V\) and a capacity of \(2.5 Ah\). What is the total energy stored in the battery pack?
Correct answer
A series RL circuit is connected to an a.c. supply. If the voltage across the resistor is 30 V and the applied voltage is 50 V, what is the voltage measured across the inductor?
60 V
20 V
40 V
80 V
Correct answer
60 V
A resistor of 10 \(\Omega\) has a current of 3 A flowing through it. How much power is dissipated by the resistor?
100 W
90 W
30 W
60 W
Correct answer
100 W
What is the term for the loss that occurs due to the resistance of the transformer windings?
Eddy current loss
Friction loss
Copper loss
Hysteresis loss
Correct answer
Eddy current loss
A transformer is used to change a \(12 V\) AC supply to a \(120 V\) AC supply. What type of transformer is this?
Autotransformer
Isolation
Step-down
Step-up
Correct answer
Autotransformer
What is the purpose of laminating the core of a transformer?
To increase the magnetic flux
To reduce eddy current losses
To increase the resistance of the windings
To provide better insulation
Correct answer
To increase the magnetic flux
Which type of DC machine has its field winding connected in parallel with the armature winding?
A separately excited DC machine
A shunt DC machine
A compound DC machine
A series DC machine
Correct answer
A separately excited DC machine
What happens to the speed of a DC motor if the applied voltage is increased?
It stays the same
It stops completely
It decreases
It increases
Correct answer
It stays the same
In a DC motor, what is the name of the stationary part that houses the field windings?
Armature
Rotor
Commutator
Stator
Correct answer
Armature
Which of the following describes the operation of a single-phase induction motor?
It runs at a speed faster than the synchronous speed
It can start on its own without any auxiliary windings
It requires two AC sources to start and run
It is not self-starting and requires a starting mechanism like an auxiliary winding.
Correct answer
It runs at a speed faster than the synchronous speed
What is the key component of an AC generator (alternator) that is used to create the main magnetic field?
The armature winding
The commutator
The field winding on the rotor
The yoke
Correct answer
The armature winding
The rotating magnetic field in a three-phase AC machine rotates at a speed known as the:
Torque speed
Rotor speed
Synchronous speed
Slip speed
Correct answer
Torque speed
A 6-pole, three-phase induction motor is connected to a 50 Hz supply. The motor runs at 960 rpm under full load. What is the slip of the motor?
6%
3%
5%
4%
Correct answer
6%
A three-phase, 400 V synchronous motor is operating at a leading power factor of 0. 8 while drawing a line current of 20 A. What is the reactive power drawn by the motor?
Correct answer
A series circuit consists of a 24 V battery, a 4 \(\Omega\) resistor, and a 2 \(\Omega\) resistor. An ammeter with an internal resistance of 0. 5 \(\Omega\) is used to measure the current. What is the reading on the ammeter?
5 A
6 A
Correct answer
An AC circuit has a true power of 500 W and an apparent power of 625 VA. What is the power factor of the circuit?
1.25
1
Correct answer
1.25
A power factor of \(1\) (unity) indicates that the circuit is primarily:
Capacitive
Reactive
Resistive
Inductive
Correct answer
Capacitive
A balanced three-phase load draws a line current of 25 A at a line voltage of 400 V. If the power factor is 0. 9 lagging, what is the total real power consumed by the load?
25 kW
Correct answer
The working principle of a moving coil galvanometer is based on the effect of a magnetic field on a:
Insulator
Stationary charge
Moving magnet
Current-carrying conductor
Correct answer
Insulator
The time period of oscillation of a galvanometer coil is 2 s. If the torsional constant of the suspension fiber is increased by a factor of 4 and the moment of inertia of the coil is halved, what is the new time period of oscillation?
Correct answer
How is the current coil of an analog wattmeter connected in a circuit?
In series with the voltage coil.
In parallel with the load
In series with the load
Only at the power source
Correct answer
In series with the voltage coil.
A lagging power factor is typically caused by which type of load?
Purely reactive loads
Inductive Loads
Capacitive loads
Resistive loads
Correct answer
Purely reactive loads
What is the most common method used to improve a lagging power factor?
Installing inductors in parallel with the load.
Installing capacitors in parallel with the load
Installing resistors in series with the load
Installing transformers to increase voltage
Correct answer
Installing inductors in parallel with the load.
A load with an apparent power of 25 kVA and a power factor of 0. 8 lagging needs to be improved to a power factor of 0. 95 lagging. What is the new apparent power (in kVA) after correction?
25 kVA
20 kVA
Correct answer
25 kVA
8 A load with an impedance of (5+j12)\(\Omega\) is connected to a 200 V source. A parallel capacitor is added to bring the power factor to unity. What is the value of the capacitance in µF if the frequency is 50 Hz?
42.8 μF
226 µF
56.2 µF
74.6 µF
Correct answer
42.8 μF
Which of the following statements about the reverse saturation current in a p-n junction diode is most accurate?
It is equal to the forward current when the diode is in forward bias.
It increases significantly with an increase in reverse bias voltage.
It is highly dependent on the temperature of the diode.
It is primarily due to the diffusion of majority carriers across the junction.
Correct answer
It is equal to the forward current when the diode is in forward bias.
In a mercury arc rectifier, what is the primary function of the anodes?
To heat the mercury vapor to start the rectification process
To attract the positive mercury ions to maintain the arc
To collect the electrons emitted from the cathode
To serve as the main source of electron emission
Correct answer
To heat the mercury vapor to start the rectification process
What is the RMS value of a sinusoidal current with a peak value of 10 A?
10 A
5 A
Correct answer
10 A
The RMS value of a triangular wave is what fraction of its peak value?
1
\(\frac{1}{\sqrt{2}}\)
\(\frac{1}{2}\)
\(\frac{1}{\sqrt{3}}\)
Correct answer
1
Which of the following is a major factor contributing to the ’Depreciation Factor’ (or Maintenance Factor) in lighting calculations?
The age and wear of the luminaire housing
The reduction in the lamp’s luminous output over its lifetime
The type of ballast used with the luminaire
The color temperature change of the lamp over time
Correct answer
The age and wear of the luminaire housing
What is the standard voltage supply for a single-phase residential electrical installation?
230 v
415 v
50 v
110 v
Correct answer
230 v
According to IE Rules, what is the standard frequency of alternating current (AC) supply in India?
60 Hz
50 Hz
25 Hz
100 Hz
Correct answer
60 Hz
An industrial plant with a total load of 750kW at a power factor of 0. 75 lagging is to have its power factor improved to 0. 95 lagging. Calculate the total kVAR of the capacitor bank needed.
510 kVAR
600 kVAR
350 kVAR
415 kVAR
Correct answer
510 kVAR
A high voltage (HV) overhead line with a declared voltage of 11 kV crosses a public road. According to IE Rule 77, what is the minimum vertical clearance required from the ground for a wire that is not earthed?
Correct answer
What does IE Rule 66 address in an electrical installation?
The size of the main switch.
The number of light bulbs in a room
The type of fuse to be used
Precaution against excess leakage
Correct answer
The size of the main switch.
The earthing grid in a substation is primarily designed to control which two types of dangerous potentials?
Voltage potential and Current potential
Touch potential and Step potential
Surge potential and Lightning potential
Phase potential and Neutral potential
Correct answer
Voltage potential and Current potential
How is the current coil of an energy meter connected in a circuit?
In parallel with the supply
In series with the load
In parallel with the load
In series with the voltage coil
Correct answer
In parallel with the supply
Which of the following is not a common cause of internal faults in a transformer?
Winding short circuits
Core heating
Overloading
Insulation breakdown
Correct answer
Winding short circuits
Which of the following types of faults is the most common in a power system?
Three-phase faults
Phase-to-phase faults
Single line-to-ground faults
Double line-to-ground faults
Correct answer
Three-phase faults
In a substation, which of the following protection schemes provides the fastest and most reliable protection for a fault within a transformer’s winding?
Differential protection
Earth fault relays
Overcurrent relays
Distance relays
Correct answer
Differential protection
What does the term ’attenuation’ mean in the context of a coaxial cable?
The speed at which a signal travels through the cable
The ability of the cable to resist external interference
The amount of power the cable can safely handle
The loss of signal strength over a certain length of cable
Correct answer
The speed at which a signal travels through the cable
A coaxial cable has a velocity factor (VF) of 0. 78. What length of this cable is required to have a total propagation delay of 500 ns? Assume the speed of light c=\(3 \times 10^8\) m/s.
117 m
100 m
150 m
125 m
Correct answer
117 m
What happens to the load angle (\(\delta\)) of an alternator connected to a busbar when its real power output is increased?
The load angle becomes zero
The load angle decreases
The load angle increases
The load angle remains constant
Correct answer
The load angle becomes zero
In a servomotor, the controller compares the commanded position to the actual position from the encoder to generate an error signal. This is a fundamental concept of:
Feedback control
Motor braking
Open-loop control
Torque control
Correct answer
Feedback control
The induced EMF in a coil is directly proportional to the rate of change of magnetic flux linkage. This is a statement of:
Lenz’s Law
Ampere’s Law
Faraday’s Law of Induction
Ohm’s Law
Correct answer
Lenz’s Law
According to Lenz’s Law, the direction of the induced current in a conductor is such that it:
Opposes the change in magnetic flux that produced it
Is always in the same direction as the magnetic field
Aids the change in magnetic flux
Creates a magnetic field that is perpendicular to the conductor
Correct answer
Opposes the change in magnetic flux that produced it
Two alternators are operating in parallel and sharing a total load of \(500 \text{ kW}\). Alternator 1 has a droop characteristic of \(4 \text{ Hz/MW}\) and Alternator 2 has a droop of \(6 \text{ Hz/MW}\). The no-load frequency of both is \(50 \text{ Hz}\). What is the load shared by Alternator 1?
\(250 \text{ kW}\)
\(300 \text{ kW}\)
\(200 \text{ kW}\)
\(400 \text{ kW}\)
Correct answer
\(250 \text{ kW}\)
If a coil with 100 turns has a flux of 0. 05 Wb when a current of 2 A flows through it, what is its self-inductance?
10H
250H
Correct answer
10H
A toroidal core has a mean circumference of 30cm, a cross-sectional area of 2cm\(^2\), and a relative permeability of 1000. A coil with 500 turns is wound on the core. What is the reluctance of the magnetic circuit?
Correct answer
What is the ripple frequency of a full-wave rectifier with a 50 Hz input signal?
200 Hz
25 Hz
50 Hz
100 Hz
Correct answer
200 Hz
In a half-wave rectifier with a filter capacitor, what is the effect of increasing the value of the capacitor?
The ripple voltage increases
The ripple frequency increases
The ripple voltage decreases
The DC output voltage decreases
Correct answer
The ripple voltage increases
What is the primary purpose of Thevenin’s theorem?
To determine the current flowing through a short circuit
To find the maximum power transfer to a load
To simplify a complex circuit to a single voltage source and a single series resistor
To find the voltage across an open circuit
Correct answer
To determine the current flowing through a short circuit
What is the primary purpose of Norton’s theorem?
To find the maximum power that can be delivered to a load
To simplify a complex circuit to a single current source and a single parallel resistor
To find the resistance of the circuit with all sources turned on
To find the voltage across an open circuit
Correct answer
To find the maximum power that can be delivered to a load
A Norton equivalent circuit has an IN of 10 A and an RN of \(5\Omega\). If a \(5\Omega\) load is connected, what is the current through the load?
2 A
5 A
0 A
10 A
Correct answer
2 A
When can you use the voltage divider rule to find the Thevenin voltage \((V_{th})\)?
When the circuit is short-circuited
When the circuit contains only a single voltage source and resistors in series
When the circuit contains dependent sources
When the circuit has multiple voltage sources
Correct answer
When the circuit is short-circuited
An alternating current has a waveform such that it has a value of \(I_m\) for half a cycle and zero for the next half. What is the average value of this waveform?
\(I_m\)
Correct answer
An AC voltage is given by \(v(t)=200 \sin(377t)\) V. What is the RMS value of the voltage?
200 v
Correct answer
200 v
A half-wave rectified sine wave has a peak value of 20 V. What is its average value?
20 V
Correct answer
An electric traction motor drives a train with a total mass of \(50,000 \text{ kg}\). The train accelerates from rest to a speed of \(60 \text{ km/h}\) in \(30 \text{ seconds}\). If the tractive effort is constant and there are no losses, what is the value of the tractive effort?
\(27.8 \text{ kN}\)
\(55.6 \text{ kN}\)
\(46.8 \text{ kN}\)
\(35.2 \text{ kN}\)
Correct answer
\(27.8 \text{ kN}\)
A resistance welding machine is used to weld two steel plates. A current of 5000 A flows through the weld. If the resistance of the weld joint is 150 \(\mu\Omega\), what is the heat generated at the weld in 0. 5 seconds?
Correct answer
A three-phase electric furnace with a star-connected resistive load of \(20~\Omega\) per phase is connected to a \(400~V\) line-to-line a.c. supply. What is the total heat generated by the furnace in \(30\) minutes?
Correct answer
A steel component with a surface area of \(0.2 m^2\) is to be electroplated with a \(20 \mu m\) thick layer of copper. A current of \(50 A\) is passed through a copper sulfate solution. The density of copper is \(8960 kg/m^3\), and the electrochemical equivalent of copper is \(0.329 mg/C\). How long will the electroplating process take?
Correct answer
A three-phase transformer is connected in a star-delta \((Y-\Delta)\) configuration. The line voltage on the star side is 11 kV, and the transformer has a turns ratio per phase of 20:1. What is the line voltage on the delta side?
Correct answer
A three-phase transformer has a rating of \(150 kVA\). The line voltages are \(11 kV\) on the primary and \(400 V\) on the secondary. If the transformer is star-connected on both sides, what is the phase current on the primary side?
Correct answer
A 100 kVA, 11000/400 v transformer has an iron loss of 800 W. The full-load copper loss is 1200 W. At what load (in kVA) will the efficiency be maximum?
Correct answer
A 5 kw, 200 v d.c. motor has total losses of 1 kW. What is the efficiency of the motor?
50%
Correct answer
A 250 V d.c. series generator with a total internal resistance of 0. 2 \(\Omega\) delivers a load current of 50 A. What is the generated EMF?
255 V
260 V
250 V
265 V
Correct answer
255 V
A 220 V d.c. shunt motor runs at 1500 rpm at no load. The armature resistance is \(0.4 \Omega\) and the field resistance is \(110 \Omega\). When the motor is loaded, it takes a line current of 50 A from the supply. What is the full-load speed?
1369 rpm
1380 rpm
1400 rpm
1450 rpm
Correct answer
1369 rpm
A 3-phase, 4-pole, 400 V, 50 Hz induction motor has an equivalent rotor resistance and reactance at standstill of \(0.15 \Omega\) and \(0.8 \Omega\) per phase, respectively. The stator impedance is negligible. If the motor is fed from a 200 V, 25 Hz source, what is the ratio of the starting torque to the maximum torque?
Correct answer
A 240 V DC shunt generator has an armature resistance of 0. 1 \(\Omega\). At a load current of 50 A, the generated EMF is 248 V. What is the voltage drop due to armature reaction?
3 v
5 v
8 v
11 v
Correct answer
3 v
A 50 Hz synchronous generator is connected to an infinite busbar. The generator has a synchronous reactance of 1. 8 \(\Omega\) per phase, and the busbar voltage is 11 kV (line-to-line). If the generator’s induced EMF is 13. 2 kV (line-to-line), what is the reactive power supplied by the generator per phase?
Correct answer
A 250 V DC shunt motor has an armature resistance of 0.15Ω. At no-load, it draws an armature current of 5 A at 1200 rpm. The field current is constant. At full load, the armature current is 50 A. If the demagnetizing effect of armature reaction reduces the flux by 8 %, what is the new speed of the motor at full load?
1269 rpm
1156 rpm
1200 rpm
1310 rpm
Correct answer
1269 rpm
Two coils are wound on the same core. Coil 1 has 100 turns, and a current of 2 A produces a flux of \(1 \times 10^{-4}\) Wb. The self-inductance of Coil 2 is 20 mH. The coupling coefficient between the coils is 0. 6. What is the mutual inductance?
\(8 \times 10^{-3}\)H
\(6 \times 10^{-3}\)H
\(5 \times 10^{-3}\)H
\(7 \times 10^{-3}\)H
Correct answer
\(8 \times 10^{-3}\)H
A magnetic core consists of two legs. The main leg has a cross-sectional area of 6 \(cm^2\) and a mean path length of 30 cm, while the second leg has a cross-sectional area of 4 \(cm^2\) and a mean path length of 20 cm. Both legs have a relative permeability of 1500. A coil with 400 turns is wound on the main leg. What is the total reluctance of the magnetic circuit if the second leg is in parallel with the main leg?
Correct answer
A single-phase load consists of a 10 kW resistive heater and a motor operating at 85% efficiency, drawing 12 kVA at a power factor of 0. 75 lagging. The supply voltage is 240 V. What is the total power factor of the combined load?
Correct answer
A generator rated at 75 \(\text{MVA}\) and 13. 8 \(\text{kV}\) has a subtransient reactance of 15\(%\). If a three-phase short circuit occurs at the generator terminals, what is the initial symmetrical short-circuit current?
Correct answer
A silicon PN junction diode has a forward voltage drop of \(0.7 \text{ V}\). If the diode is in series with a \(100 \Omega\) resistor and a \(10 \text{ V}\) DC power supply, what is the current flowing through the circuit?
100 mA
70 mA
93 mA
107 mA
Correct answer
100 mA
Given a coaxial cable with a characteristic impedance of \(75\Omega\), an inner conductor diameter of \(1.5mm\), and a dielectric constant of \(2.0\), calculate the outer conductor diameter.
Correct answer
A high load factor in a power station indicates:
The station has a very low maximum demand
The station has frequent breakdowns
The station is only used during peak load hours
The station is running at full capacity continuously
Correct answer
The station has a very low maximum demand
The Load Factor of a power plant is a measure of its:
Maximum power output
Operational efficiency and utilization
Total connected load of the entire system
Number of consumers served
Correct answer
Maximum power output
A nuclear power plant generates 800MWh in a day. The plant's daily load factor is 85%. What is the plant's maximum demand for that day?
19.45MW
39.22MW
57.80MW
82.73MW
Correct answer
19.45MW
A plant with an installed capacity of 150MW has a plant capacity factor of 60%. The load factor is 80%. What is the maximum demand on the plant?
Correct answer
A consumer uses 1200 kWh of energy in a month. If their maximum demand is 20 kW, what is their monthly Load Factor? (Assume 1 month = 30 days)
Correct answer
A power plant has an annual Load Factor of 0. 75. If the total energy generated in a year is 6,570,000 kWh, what is the maximum demand on the plant?
1000 kW
2000 kW
3000 kW
4000 kW
Correct answer
1000 kW
A 20 kW three-phase inductive load operates at a power factor of 0. 7 lagging. What is the reactive power drawn by the load?
Correct answer
The Ferranti effect in a long transmission line is a phenomenon where:
The receiving end voltage is higher than the sending end voltage.
The voltage and current are in phase
The line losses are higher than normal
The receiving end voltage is lower than the sending end voltage
Correct answer
The receiving end voltage is higher than the sending end voltage.
The receiving end voltage becomes equal to the sending end voltage at:
No-load condition with a short line
Full load condition
The surge impedance loading (SIL) of the line
Unity power factor load
Correct answer
No-load condition with a short line
A \(50 \text{ Hz}\) transmission line has an inductance of \(2 \text{ mH/km}\). If the line is \(100 \text{ km}\) long, what is the total inductive reactance?
Correct answer
A 150 km long transmission line operates at 60 Hz and has a shunt capacitance of 0.02µF/km. Given that the line-to-neutral voltages is 13.2 kV, what is the total capacitive charging current for the line?
5.48 A
14.93 A
27.64 A
45.36 A
Correct answer
5.48 A
A long transmission line is operating at a voltage of 380 kV with a surge impedance of \(400\Omega\). What is the surge impedance loading (SIL)?
186 MW
361 MW
572 MW
893 MW
Correct answer
186 MW
A Megger measures an insulation resistance of 200 M\(\Omega\) between a conductor and ground when a voltage of 1000 V is applied. What is the leakage current?
5 \(\mu\)A
10 \(\mu\)A
15 \(\mu\)A
20 \(\mu\)A
Correct answer
5 \(\mu\)A
An energy meter disc makes 600 revolutions per kWh. A load is connected for 20 minutes and the disc makes 40 revolutions. Calculate the power of the load in watts.
100 W
200 W
300 W
400 W
Correct answer
100 W
An RL circuit has R = 10 \(\Omega\) and L = 0. 5 H at 50 Hz. What is the inductive reactance?
100 \(\Omega\)
157 \(\Omega\)
314 \(\Omega\)
25 \(\Omega\)
Correct answer
100 \(\Omega\)
Determine the load resistance for maximum power transfer if source resistance is \(8\Omega\).
\(4\Omega\)
\(8\Omega\)
\(12\Omega\)
\(16\Omega\)
Correct answer
\(4\Omega\)
In a single-phase AC circuit, if the current is doubled and voltage remains the same, the active power:
Doubles
Quadruples
Halves
Remains the same
Correct answer
Doubles
In a circuit containing both an inductor and capacitor, resonance occurs when:
\(XL = XC\)
\(XL > XC\)
\(XL < XC\)
\(R = 0\)
Correct answer
\(XL = XC\)
A battery’s internal resistance causes:
Increase in terminal voltage
Decrease in terminal voltage under load
No effect on current
Voltage oscillations
Correct answer
Increase in terminal voltage
200 questions in the full paper