A. 15%
B. 20%
C. 30%
D. 45%
E. 60%.
Related Mcqs:
- The overall efficiency of thermal power plant is________________?
A. boiler efficiency, turhine efficiecny, generator efficiency
B. all the three above plus gas cycle efficiency
C. carnot cycle efficiency
D. regenerative cycle efficiency
E. rankine cycle efficiency - The coal requirement per kW hour generation in the thermal power plant is of the order of__________________?
A. 0.1 to 0.2 kg
B. 0.2 to 0.4 kg
C. 0.6 to 0.8 kg
D. 1.0 to 1.5 kg
E. 1.5 to 2 kg - The thermal efficiency of a diesel engine is of the order of_________________?
A. 92%
B. 68%
C. 52%
D. 34%
E. 25%. - Efficiency of a thermal cycle increases by ________________?
A. regeneration
B. reheating of steam
C. both A. and B.
D. cooling of steam
E. none of the above - 100% efficiency of a thermal cycle cannot be achieved because of __________________?
A. frictional losses
B. it is not possible to achieve 0°K temperature
C. leakage
D. non-availability of ideal substance
E. none of the above - Thermal efficiency of well maintained boiler will be of the order___________________?
A. 20%
B. 40%
C. 50%
D. 75%
E. 90% - The thermal efficiency of a petrol engine of two stroke with crank case scavenging as compared to four stroke petrol engine with same comperssion ratio will be_____________________?
A. higher
B. lower
C. same
D. depends on size of engine
E. unpredictable. - The thermal efficiency of a two cycle engine as compared to four cycle engine is_________________?
A. more
B. less
C. same
D. more upto some load and then less
E. it may be less or more depending on several other factors - The thermal efficiency of a semi-diesel cycle having fixed compression ratio and fixed quantity of heat, with increase in pressure ratio will_______________?
A. increase
B. decrease
C. remain unaffected
D. increase/decrease depending upon engine capacity
E. first increase and then decrease - The diameter of fire tubes in Cochran boiler is of the order of___________________?
A. 2 cm
B. 6 Cm ,
C. 8 cm
D. 12 cm
E. 15 cm
