Explore topic-wise MCQs in ENGINEERING SERVICES EXAMINATION (ESE).

This section includes 96 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.

51.

Annual operating cost of a generating plant consists of 
A. Fixed charges
B. Semi fixed charges
C. Operating or running charges
D. All of these
Answer» E.
Discussion
52.

 For a nuclear plant, what is its useful life? 
A. 10 years.
B. 30 years
C. 100 years
D. 60 years
Answer» C. 100 years
Discussion
53.

  What happens in a load shedding? 
A. System voltage is reduced.
B. System frequency is reduced.
C. System loads are switched off.
D. System power factor is changed.
Answer» D. System power factor is changed.
Discussion
54.

Why is load shedding done? 
A. Reducing peak demand on the system.
B. Repairing of machines.
C. Power factor improvement.
D. Efficient operation of equipment.
Answer» B. Repairing of machines.
Discussion
55.

Generators for the base load plants are usually designed for maximum efficiency around 
A. 20% overload
B. Full load
C. 75% full load
D. None of these
Answer» C. 75% full load
Discussion
56.

What are fixed charges?
A. Cost of investment irrespective of energy generated.
B. Operating cost of the fuel along with cost of investment plant.
C. Operating cost only.
D. None of the above
Answer» B. Operating cost of the fuel along with cost of investment plant.
Discussion
57.

Which components are included in the annual operating cost? 
A. Fuel, maintenance cost and labour
B. Interest, taxes, insurance and depreciation
C. Both (a) and (b)
D. None of the above
Answer» B. Interest, taxes, insurance and depreciation
Discussion
58.

   What does the annual fixed cost include? 
A. Fuel, maintenance cost and labour
B. Interest, taxes, insurance and depreciation
C. Both (a) and (b)
D. None of the above
Answer» C. Both (a) and (b)
Discussion
59.

 The capital cost of a power plant depends on ________________. 
A. Total installed capacity only
B. Total number of units only
C. Both (a) and (b)
D. None of these
Answer» D. None of these
Discussion
60.

 What is meant by semi fixed charges? 
A. It is the cost which is independent of maximum demands and units generated.
B. It is the cost which depends only on the units generated.
C. It is the cost which depends upon the maximum demand but it is independent of units generated.
D. None of these.
Answer» D. None of these.
Discussion
61.

 The annual depreciation reserve depends on _______________. 
A. Capital cost only.
B. Salvage value only.
C. On any method of calculation of depreciation factor.
D. All of these
Answer» E.
Discussion
62.

Depreciation charge may be based on which method? 
A. Straight line method.
B. Sinking fund method.
C. Both (a) & (b).
D. None of these.
Answer» D. None of these.
Discussion
63.

 In a straight line method, annual depreciation charges are calculated by 
A. The capital cost minus salvage value divided by the number of years of life.
B. The capital cost divided by the number of years of life.
C. Both (a) and (b).
D. None of these
Answer» B. The capital cost divided by the number of years of life.
Discussion
64.

  The most suitable location for the power factor improvement device is
A. Near the electrical appliance which is responsible for the poor power factor.
B. At the sending end.
C. At the receiving end in case of transmission lines.
D. Both (a) and (c).
Answer» E.
Discussion
65.

 A transformer costing Rs 90,000 haws a useful life of 20 years. Determine the annual depreciation charge using straight line method. Assume salvage to be 15,000. 
A. 4000
B. 3750
C. 4350
D. 3500
Answer» C. 4350
Discussion
66.

What is tariff? 
A. The rate at which electrical energy is produced in the plant.
B. The rate at which electrical energy is supplied to the consumers.
C. Both (a) and (b).
D. None of these.
Answer» C. Both (a) and (b).
Discussion
67.

Flat rate tariff is charged on what basis?
A. Connected load.
B. Units consumed.
C. Maximum demand.
D. All of these
Answer» C. Maximum demand.
Discussion
68.

 Domestic consumers are charged _____________. 
A. Flat demand tariff
B. Block rate tariff
C. Flat rate tariff
D. Off peak tariff
Answer» C. Flat rate tariff
Discussion
69.

Which tariff is used by the small commercial consumers?
A. Maximum demand tariff
B. Block rate tariff
C. Three part tariff
D. Two part tariff
Answer» C. Three part tariff
Discussion
70.

 Block rate tariff, where energy charge decreases with the increase in energy consumption, 
A. Encourages the consumers for more consumption.
B. Discourages the consumers for more consumption.
C. Encourages the consumers to restrict their demand.
D. Encourages the consumers to improve the power factor.
Answer» B. Discourages the consumers for more consumption.
Discussion
71.

Two part tariff is charged on what basis?
A. Connected load
B. Units consumed
C. Maximum demand
D. Both (b) and (c)
Answer» E.
Discussion
72.

 Fixed charge is dependent on what factor? 
A. Energy consumption
B. Maximum demand
C. Peak load demand
D. All of the above
Answer» C. Peak load demand
Discussion
73.

 A variable charge is based on what? 
A. Energy consumption
B. Maximum demand
C. Peak load demand
D. All of the above
Answer» B. Maximum demand
Discussion
74.

What is the main disadvantage of two port tariff? 
A. He has to pay semi fixed charges.
B. He has to pay fixed charges.
C. He has to pay running charges.
D. None of the above.
Answer» B. He has to pay fixed charges.
Discussion
75.

Which among the following are included in the three part tariff?

i. Fixed charges 
ii. Running charges
iii. Semi fixed charges.
A. i, ii and iii
B. i and ii
C. i and iii
D. ii and iii
Answer» B. i and ii
Discussion
76.

  Which tariff is most ideal tariff for the consumer? 
A. Two part tariff
B. Three part tariff
C. Both (a) and (b)
D. None of the above
Answer» C. Both (a) and (b)
Discussion
77.

What is the difference between two part tariff and maximum demand tariff? 
A. A separate meter is used
B. A separate maximum demand meter is used
C. Semi fixed charges are also included
D. All of these
Answer» C. Semi fixed charges are also included
Discussion
78.

Maximum demand tariff is applied for which kind of consumers? 
A. Big consumers
B. Small consumers
C. Residential consumers
D. All of these
Answer» B. Small consumers
Discussion
79.

Why is Maximum demand tariff not applicable to domestic consumers? 
A. Low maximum demand
B. Low load factor
C. Lower energy consumption
D. Low power factor
Answer» B. Low load factor
Discussion
80.

Why is a big consumer charged at a lower rate than the small consumer? 
A. Their maximum demand is small.
B. It improves the load factor.
C. Both (a) and (b).
D. None of these.
Answer» C. Both (a) and (b).
Discussion
81.

What is the power factor tariff? 
A. It considers only maximum demand.
B. It considers only semi fixed charges and the power factor.
C. It considers only power factor.
D. It considers the load factor.
Answer» E.
Discussion
82.

 What is/are the consequence/s of low power factor? 
A. Increases the rating of station equipments only
B. Only line losses increases
C. Both (a) and (b)
D. None of these
Answer» D. None of these
Discussion
83.

A consumer having lower power factor contributes towards which factor? 
A. Semi fixed charges.
B. Fixed charges.
C. Running charges.
D. Penalty is imposed.
Answer» C. Running charges.
Discussion
84.

 Which tariff is also known as the average power factor tariff? 
A. Sliding scale tariff
B. kW tariff
C. kVAR tariff
D. kVA maximum demand tariff
Answer» B. kW tariff
Discussion
85.

What is maximum value of power factor? 
A. 0.5
B. 1
C. 1.5
D. 0.95
Answer» C. 1.5
Discussion
86.

Active power and apparent power are respectively represented by _________. 
A. kW and kVAR
B. kVAR and kVA
C. kVA and kVAR
D. kW and kVA
Answer» E.
Discussion
87.

Which among the following happens in a low power factor? 
A. Large kVA rating of the equipment.
B. Greater conductor size.
C. Reduced handling capacity of the system.
D. All of the above.
Answer» E.
Discussion
88.

Lower power factor is usually not due to ____________. 
A. Discharge lamp
B. Arc lamps
C. Incandescent lamps
D. Induction furnace
Answer» D. Induction furnace
Discussion
89.

For a consumer what is the most economical power factor? 
A. 0.25 – 0.5 lagging
B. 0.25 – 0.5 leading
C. 0.85 – 0.95 lagging
D. 0.85 – 0.95 leading
Answer» D. 0.85 – 0.95 leading
Discussion
90.

The primary reason for the low power factor is due to the installation of
A. Induction motors
B. DC motors
C. Synchronous motors
D. Commutator motors
Answer» B. DC motors
Discussion
91.

For which among the following consumers is penalty imposed for low power factor?
A. Residential and commercial consumers.
B. Industrial consumers
C. Agricultural consumers.
D. All of the above.
Answer» D. All of the above.
Discussion
92.

Power factor can be improved by connecting which among these? 
A. Static capacitors.
B. Resistors.
C. Synchronous condensers.
D. Both (a) and (c).
Answer» E.
Discussion
93.

What is the advantage of the static capacitors? 
A. Low losses
B. Easy installation
C. Lower maintenance
D. All of the above
Answer» E.
Discussion
94.

Which among these is the advantage of synchronous condensers? 
A. Helps in achieving the stepless control of power factor.
B. The motor windings have a lower thermal stability.
C. The maintenance cost is low.
D. All of the above.
Answer» B. The motor windings have a lower thermal stability.
Discussion
95.

 Phase advancers are used for which among the following machines? 
A. Transformers
B. Synchronous machines
C. Induction motors
D. DC machines
Answer» D. DC machines
Discussion
96.

What is the main disadvantage of phase advancers? 
A. Cannot be used for motors below 200 H.P
B. Produces noise
C. Can be used where synchronous motor is un admissible
D. None of these
Answer» B. Produces noise
Discussion