power generation and economics (MCQ-2) important questions four your examinations , these questions are comes in many examination
1. Demand factor is
ans- max. demand / connected demand
2. In a system , if the base load is the same as the maxm. demand , the load factor will be
ans- 1
3. A system having a connected load is 100kW , the peak load of 80kW . base load is 20kW and avg. load of 40kW , will have a load factor
ans- 50%
4. The power station plant load factor is defined as the ratio of
ans- avg. load of peak load
8
5. The max. demand of a consumer is 2kW and his daily energy consumption is 20 unit. his load factor is
ans- 41.6%
6. If the power factor is high , then the consumer maxm. kVA demand
ans- Decreases
7. Diversity factor has a direct effected on the
ans- fixed cost of unit generated
8. What does the area under the load curve given
ans- energy consumed
9. load shedding is done to
ans- reduce peak demand
10. In two part tariff, variation in load factor will affect
ans- Operating or running charges
11. Salvage value of the plant is always
a) positive
b) negative
c) zero
d) any of the above
12. Ships are generally powered by
ans- Diesel engines
13. Generating capacity connected to the bus bars and ready to take load when switched on is known as
ans- spinning reserve
14. An alternator coupled to a ________ runs at slow speed, as compared to as compared to others.
ans - Hydraulic turbine
15. Power plant cannot have single unit of 100 MW.
ans- Diesel
16. Hydrograph is similar to
ans- chronological load curve
17. what is the total power installed capacity in (approx) in India ?
ans- 125,000 MW
18. What is the current expression for the electrical power developed by a hydroelectric power plant in KW
ans- 0.736/75 WQHn
19. Gross head of an hydroelectric power station
ans- the difference of water level between the level in the storage and tail race
20. The largest size of hydroelectric unit in india?
ans- 165MW
21. The advantage of hydroelectric power station over the thermal power station?
ans- The operating cost of hydroelectric power station is low
22. The specific speed of a water turbine is the speed at which the turbine the develop ?
ans - Unit horse power at unit head
23. The specific speed of kaplan francies and pelton turbine are in
ans- the decreasing order
24. Turbine installed in BHAKRA NAGAL DAM are
ans- palton wheels
25. IN water turbine the runway speed of pelton wheel is
ans- 1.8 times rated speed
26. Water hammer occurs in
ans- penstock
27. Location of a surge tank in an hydroelectric power station ,is near
ans- turbine
28. the function of surge tank is to
ans- Reliene water hammer pressure in the penstock pipe
