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Economics of Power Generation

Which of the following is not necessarily an advantage of interconnecting various power stations?

August 11, 2021December 3, 2018 by admin
Which of the following is not necessarily an advantage of interconnecting various power stations?

A. Improved frequency of power supplied
B. Reduction in total installed capacity
C. Increased reliability
D. Economy in operation of plants

Categories Economics of Power Generation

__________ will be least affected due to charge in supply voltage frequency.

August 11, 2021December 3, 2018 by admin
__________ will be least affected due to charge in supply voltage frequency.

A. Electric clock
B. Mixer grinder
C. Ceiling fan
D. Room heater

Categories Economics of Power Generation

In an interconnected system, the diversity factor of the whole system:

August 11, 2021December 3, 2018 by admin
In an interconnected system, the diversity factor of the whole system:

A. remains unchanged
B. decreases
C. increases
D. none of the above

Categories Economics of Power Generation

For a consumer the most economical power factor is generally____________?

August 11, 2021December 3, 2018 by admin
For a consumer the most economical power factor is generally____________?

A. 0.5 lagging
B. 0.5 leading
C. 0.95 lagging
D. 0.95 leading

Categories Economics of Power Generation

Which of the following is the disadvantage of a synchronous condenser?

August 11, 2021December 3, 2018 by admin
Which of the following is the disadvantage of a synchronous condenser?

A. High maintenance cost
B. Continuous losses in motor
C. Noise
D. All of the above

Categories Economics of Power Generation

In a distribution system, in order to improve power factor, the synchronous capacitors are installed__________?

August 11, 2021November 30, 2018 by admin
In a distribution system, in order to improve power factor, the synchronous capacitors are installed__________?

A. at the receiving end
B. at the sending end
C. either A. or (b)
D. none of the above

Categories Economics of Power Generation

An induction motor has relatively high power factor at__________?

August 11, 2021November 30, 2018 by admin
An induction motor has relatively high power factor at__________?

A. rated r.p.m.
B. no load
C. 20 percent load
D. near full load

Categories Economics of Power Generation

By the use of which of the following power factor can be improved?

August 11, 2021November 30, 2018 by admin
By the use of which of the following power factor can be improved?

A. Phase advancers
B. Synchronous compensators
C. Static capacitors
D. Any of the above

Categories Economics of Power Generation

Which of the following is the essential requirement of peak load plant ?

August 11, 2021November 30, 2018 by admin
Which of the following is the essential requirement of peak load plant ?

A. It should run at high speed
B. It should produce high voltage
C. It should be small in size
D. It should be capable of starting quickly

Categories Economics of Power Generation

__________ is invariably used for peak load

August 11, 2021November 30, 2018 by admin
__________ is invariably used for peak load

A. Nuclear power plant
B. Steam turbine plant
C. Pumped storage plant
D. None of the above

Categories Economics of Power Generation
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