Economics of power generation. Part – 1

1. A nuclear power plant is invariably used as a,

A. Peak load plant

B. Stand by plant

C. Spinning reserve plant

D. Base load plant

2. The primary reasons for low power factor in supply system is due to installation of,

A. Induction motor

B. Synchronous motor

C. Single phase motor

D. Dc motor

3. The name of the technical term – “the rate at which the power is sold to consumers”, is:

A. Load shading

B. Dispatch

C. Tariff

D. Power factor

4. Industrial consumers are penalized when the average power factor falls below,

A. 0.7 lagging

B. 0.5 lagging

C. Unity

D. 0.8 lagging

5. For the same amount of active power drawn by the load, current is minimum when the power factor of the load is:

A. 0.8 lagging

B. Unity

C. 0.8 leading

D. Zero

6. Demand factor is define as:

A. Average load/maximum load

B. Maximum load/connected load

C. Connected load/maximum load

D. Maximum load/average load

7. In power plant a reserve generating capacity which is in operation but not in service is called as

A. Cold reserve

B. Hot reserve

C. Firm reserve

D. Spinning reserve

8. Load factor of power station is

A. Generally equal to one

B. Always less than unity

C. Always more than unity

D. None of the above

9. Pumped storage plant is suitable for

A. Peak loads

B. Off peak loads

C. Average load

D. Medium load

10. Capacitors for P.F. Correction at rated in

A. KW

B. KV

C. KVAR

D. KVA