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MCQs on Power Generation

May 4, 2017 by admin

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1. A steam power stations basically work on the
(a) thermodynamic cycle.
(b) Rankin cycle.
(c) Vapor pressure cycle.
(d) Carton cycle.  

Answer

           B 

2. The overall efficiency of modern steam power station is about
(a) 15%.
(b) 29%.
(c) 47%.
(d) 59%.  

Answer

           B 

3. Which of the following power plant has highest efficiency?
(a) Steam power plant.
(b) Hydro power plant.
(c) Nuclear power plant.
(d) Diesel power plant.    

Answer

           B 

4. Which of the following power plant has least efficiency?
(a) Nuclear power plant.
(b) Hydro power plant.
(c) Steam power plant.
(d) Diesel power plant.  

Answer

           C 

5. The major heat loss in a steam power stations occur in
(a) condenser.
(b) compressor.
(c) turbine.
(d) super heater.  

Answer

           A 

6. Low power factor is usually not due to
(a) Discharge lamps.
(b) Arc lamps.
(c) Induction lamps.
(d) Incandescent lamps.  

Answer

           D 

7. The area under the load curve represents
(a) load current.
(b) connected load.
(c) energy consumed.
(d) maximum demand.  

Answer

           C 

8. What does the highest points on the daily load curve represents?
(a) average load.
(b) based load.
(c) maximum demand.
(d) load factor.    

Answer

           C 

9. An over excited synchronous motor on no load is known as
(a) phase advancer.
(b) synchronous condenser.
(c) exciter.
(d) alternator.    

Answer

           B 

You may also read
• Why all the voltage levels are multiples of 11 kV?
• Why Motor rated in kW instead of kVA?

10. In hydro power plant, surge tank is provided for the protection of
(a) turbine.
(b) bulb.
(c) penstock.
(d) dam.  

Answer

           C 

11. Salvage value of the plant is always
(a) positive.
(b) negative.
(c) zero.
(d) any of the above.  

Answer

           D 

12. When power factor is improved, the kilowatt capacity of alternator is
(a) increases.
(b) decreases.
(c) remain same.
(d) none of the above.  

Answer

           A 

13. To improve the power factor of a three phase load, the capacitors are mainly connected in
(a) star.
(b) delta.
(c) series.
(d) any of the above.    

Answer

           B 

14. Direct conversion of heat into electric power is possible through
(a) fuel cell.
(b) batteries.
(c) thermionic converter.
(d) all of the above.    

Answer

           C 

15. Which of the following power plant generally operates at high speed?
(a) Diesel power plant.
(b) Nuclear Power Plant.
(c) Stream Power plant.
(d) Hydro Power plant.    

Answer

           C 

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