Explore topic-wise MCQs in Electrical Engineering Questions.

This section includes 59 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.

1.

Which method provides cash for the replacement of asset at the end of its useful life?

A. Straight line depreciation
B. Sum of years digits depreciation
C. Declining balance depreciation
D. Sinking fund depreciation
Answer» E.
2.

Which is the major energy source to meet the Indian energy demand?

A. Coal
B. Oil
C. Natural gas
D. Lignite
Answer» B. Oil
3.

Which country has the biggest coal reserves?

A. Russia
B. US
C. China
D. India
Answer» C. China
4.

Which country has highest energy usage per capita?

A. Iceland
B. Qatar
C. Kuwait
D. United Arab emirates
Answer» B. Qatar
5.

Which among the following is not the pronged approach to energy management?

A. Capacity utilization
B. Fine turning of equipment
C. Technology up gradation
D. All of these
E. None of these
Answer» F.
6.

Which among the following fuel is not available for thermal energy supply?

A. LSHS
B. LDO
C. LPG
D. All of these
E. None of these
Answer» F.
7.

To save energy, Washington DC, has developed an investment analysis software package, ENVEST. This program can be run on an

A. IBM PC
B. PCXT
C. PCAT
D. All of these
Answer» E.
8.

To reduce the power consumption, the capacitors should be located

A. As close as possible to the load
B. As far as possible to the load
C. Not too close not too far from the load
D. All of these
E. None of these
Answer» B. As far as possible to the load
9.

The wattles component is

A. I
B. I cos∅
C. I sin∅
D. None of these
Answer» D. None of these
10.

The water pollution prevention and control act was formed in the year

A. 1986
B. 1974
C. 1981
D. 1980
Answer» C. 1981
11.

The term Demand Side Management was coined during

A. 1936 energy crisis
B. 1972 energy crisis
C. 1973 energy crisis
D. 1986 energy crisis
Answer» D. 1986 energy crisis
12.

The sum of money received or paid in annual in one or more installments, for a given period of time is known as

A. Time value of money
B. Annuity
C. True compounding
D. Cash flow
Answer» C. True compounding
13.

The secondary distribution transformer is generally

A. Star connected
B. Star connected with the secondary delta connected
C. Delta connected with the secondary star connected
D. Delta connected
Answer» D. Delta connected
14.

The rules of a particular electricity supply system provision for metering, earthing and for other installation matters are in accordance with the electricity supply act of

A. 1947
B. 1948
C. 1956
D. 1958
Answer» C. 1956
15.

The rotational speed of an AC induction motor depends on the

A. Number of poles in stator
B. Frequency of the applied AC power
C. Both a and b
D. None of these
Answer» D. None of these
16.

The reduction of utility load primarily during peak demand is known as

A. Peak clipping
B. Load shifting
C. Valley filling
D. MTP analysis
Answer» B. Load shifting
17.

The reactive power component kVAR is equal to the

A. kVA sin∅
B. kW tan∅
C. kW cos∅
D. Both (a) and (b)
E. None of these
Answer» E. None of these
18.

The ratio of average load over a designated period to the peak load demand occurring in that period is known as

A. power factor
B. ratchet rate
C. load factor
D. production factor
Answer» D. production factor
19.

The production factor is defined as the ratio of

A. current year production to the reference year production
B. current year production to the reference month production
C. reference month production to the current month production
D. reference year production to the current year production
Answer» B. current year production to the reference month production
20.

The pay period is defined as the ratio of

A. Net investment to the net annual cash flow
B. Net investment to the capital cost
C. Net annual cash flow to the capital cost
D. Net annual savings to the capital cost
Answer» B. Net investment to the capital cost
21.

The monitor and control of energy management system is done by using

A. MATLAB
B. SCADA
C. AUTO - CAED
D. All of these
E. None of these
Answer» C. AUTO - CAED
22.

The main objective of energy management is to

A. Minimize energy cost
B. Minimum environmental effects
C. Maintain optimum energy procurement and utilization
D. Only A and B
E. All of these
Answer» F.
23.

The Indian electricity rules of 1956 cover

A. Inspections of electric installations
B. Licensing
C. General safety precautions
D. Only b and c
E. All of these
Answer» F.
24.

The future value of one dollar in “n” periods at interest rate of “I” present is known as

A. Single payment compound amount
B. Single payment present worth
C. Uniform series compound amount
D. Sinking fund payment
Answer» B. Single payment present worth
25.

The energy strategies of companies have the principle of

A. restoring and preserving the environment
B. reducing wastes and pollutants
C. educating the people about energy conservation
D. all of these
E. none of these
Answer» E. none of these
26.

The electric power from primary distribution line is delivered to distribution substations by using

A. 1 phase wire
B. 3 phase, 3 wire
C. 3 phase, 4 wire
D. All of these
E. None of these
Answer» D. All of these
27.

The efficiency of variable speed drives generally

A. Decreases with speed
B. Increases with speed
C. Remains constant with change in speed
D. None of these
Answer» B. Increases with speed
28.

The demand side management can be achieved by the technique of

A. Time of day pricing and metering
B. Multi - utility power exchange model
C. Load management
D. All of these
E. None of these
Answer» E. None of these
29.

The current flowing through the resistance is given by

A. I cos∅
B. I sin∅
C. I tan∅
D. I cot∅
Answer» B. I sin∅
30.

The conversion factor for the standard power rating motor is equal to

A. 0.735
B. 0.746
C. 0.748
D. 0.756
Answer» C. 0.748
31.

The capital cost of generating equipment, transmission system and distribution system comes under

A. Fixed capital
B. Running capital
C. Both fixed and running capital
D. All of these
E. None of these
Answer» B. Running capital
32.

The basic function of electronic ballast is

A. To ignite the lamp
B. To stabilize the gas discharge
C. To supply the power to the lamp
D. Only a and c
E. All of these
Answer» F.
33.

Reactive power is measured in terms of

A. kW
B. kVA
C. kVAR
D. None of these
Answer» D. None of these
34.

Power factor of a load can be improved by using

A. Static capacitors
B. Synchronous condenser
C. Phase advancer
D. Only a and b
E. All of the above
Answer» F.
35.

Power factor is the ratio of

A. Active power to the reactive power
B. Active power to the apparent power
C. Apparent power to the active power
D. Reactive power to the apparent power
Answer» C. Apparent power to the active power
36.

Phase advancers are used to improve the power factor of

A. Induction motors
B. Induction generators
C. Synchronous motors
D. Synchronous generators
Answer» B. Induction generators
37.

Maximum demand charges are given in

A. kWh
B. kVA
C. kVAr
D. All of these
E. None of these
Answer» C. kVAr
38.

LNG stands for

A. Liquefied natural gas
B. Liquid natural gas
C. Low nitrogen content gas
D. Liquid nitrogen gas
Answer» B. Liquid natural gas
39.

In valley filling, the incremental costs during peak hours are

A. Less than the average costs of electricity
B. More than the average costs of electricity
C. Equal to the average cost of electricity
D. None of these
Answer» B. More than the average costs of electricity
40.

In the given options, the non-commercial source of energy is

A. Coal
B. Lignite
C. Firewood
D. Refined petroleum products
Answer» E.
41.

In passive potential energy strategies,

A. There is no systematic planning
B. Measures with low profitability is not considered
C. One should have high knowledge of the energy price
D. All of these
Answer» B. Measures with low profitability is not considered
42.

In order to improve the power factor of equipment operating at lagging power factor, a capacitor is connected

A. In series with the equipment
B. In parallel with the equipment
C. In series-parallel with the equipment
D. Either (a) or (b)
Answer» C. In series-parallel with the equipment
43.

IFMA stands for

A. International Facility Management Association
B. Indian Facility Management Association
C. International Facility Management Academy
D. Indian Facility Management Academy
Answer» B. Indian Facility Management Association
44.

If the load current decreases then the power factor

A. Will also decrease
B. Will increase
C. Will remains unchanged
D. None of these
Answer» C. Will remains unchanged
45.

If power factor is less than unity then it will result in

A. Large kVA rating of equipment
B. Greater conductor size
C. Large copper losses
D. Only A and C
E. All of these
Answer» F.
46.

If L is the value of equipment at the end of its useful life, n is the number of years of useful life equipment and P is the initial cost than the annual depreciation rate is given by

A. ( P - L ) / n
B. ( p - n ) / L
C. ( L - n ) / P
D. n / ( L - P )
Answer» B. ( p - n ) / L
47.

If an alternator is supplying load of 350 kW at 0.6 pf lagging and its power factor is raised to unity then to supply the alternator for the same kVA loading, the extra required kilowatts will be

A. 205 kW
B. 212 kW
C. 233 kW
D. 246 kW
Answer» D. 246 kW
48.

For voltage boosting in distribution networks the capacitors used is

A. Series capacitors
B. Shunt capacitors
C. Both (a) and (b)
D. None of these
Answer» B. Shunt capacitors
49.

For a typical AC power supply, the secondary transmission carries the voltage of

A. 11kV
B. 33 kV
C. 66 kV
D. 132 kV
Answer» C. 66 kV
50.

EPRI stands for

A. European power research institute
B. Electrical power Russian institute
C. Electrical power research institute
D. Electrical power research industries
Answer» D. Electrical power research industries