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MCQs 1: Annual operating expenditure of a power plant consists of_________?

fixed charges semi-fixed charges running charges all of the above
Answer Explanation

MCQs 2: Which of the following load is responsible for lower power factor of supply system__________?

induction motors resistive loads synchronous Motors all of the above
Answer Explanation

MCQs 3: Load factor of a power station is defined as____________?

maximum demand/average load average load x maximum demand average load/maximum demand none of the above
Answer Explanation

MCQs 4: Load curve is useful in deciding the__________?

operating schedule of generating units sizes of generating units total installed capacity of the plant all of the above
Answer Explanation

MCQs 5: One kilowatt hour is equal to_________?

532 k cal 735 k cal 746 k cal 860 k cal
Answer Explanation

MCQs 6: If the load factor of a power station is high then its cost of generation will be_______?

High Low Remain same Depend upon plant type
Answer Explanation

MCQs 7: At low value of power factor, the cost of generation of a power station will be____________?

high low remain same none of the above
Answer Explanation

MCQs 8: Compounding of steam turbine is done for_______________?

reducing the work done increasing the rotor speed reducing the rotor speed balancing the turbine
Answer Explanation

MCQs 9: The value of the reheat factor is of the order of_____________?

0.8 to 1.0 1.0 to 1.05 1.1 to 1.5 above 1.5
Answer Explanation

MCQs 10: Reheat factor is the ratio of_____________?

isentropic heat drop to useful heat drop adiabatic heat drop to isentropic heat drop cumulative actual enthalpy drop for the stages to total is isentropic enthalpy heat drop
Answer Explanation

MCQs 11: Deaerative heating is done to_____________?

heat the water heat the air in the water remove dissolved gases in the water
Answer Explanation

MCQs 12: Blowing down of boiler water is the process_____________?

to reduce the boiler pressure to increase the steam temperature to control the solid concentration in the boiler water by removing some of the concentrated saline water none of the above
Answer Explanation

MCQs 13: TravelUng grate stoker can burn coals at the rates of____________?

50—75 kg/m per hour 75—100 kg/m per hour 100—150 kg/m per hour 150—200 kg/m2 per hour
Answer Explanation

MCQs 14: Where unpulverised coal has to be used and boiler capacity is large, the stoker which is used is______________?

underfeed stoker overfeed stoker any
Answer Explanation

MCQs 15: Example of overfeed type stoker is___________?

chain grate spreader travelling grate all of the above
Answer Explanation

MCQs 16: Under-feed stokers work best for _________ coals high in volatile matter and with caking tendency?

anthracite lignite semibituminous and bituminous
Answer Explanation

MCQs 17: In _________ system fuel from a central pulverizing unit is delivered to a bunker and then to the various burners?

unit central none of the above
Answer Explanation

MCQs 18: The amount of air which is supplied for complete combustion is called___________?

primary air secondary air tertiary air
Answer Explanation

MCQs 19: Bucket elevators are used for___________?

carrying coal in horizontal direction carrying coal in vertical direction carrying coal in any direction
Answer Explanation

MCQs 20: Method which is commonly applied for unloading the coal for small power plant is___________?

lift trucks coal accelerators tower cranes belt conveyor
Answer Explanation

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