Question 1 : Which of these is not a component of nuclear reactor?
1. reactor core
2. refractor
3. control rod
4. biological shield
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Question 2 : The maximum efficiency of Rankine cycle (η_r) is the function of
1. the mean temperature of heat addition (T_m) only
2. the mean temperature of heat addition (T_m) and temperature of steam at the exit of the turbine
3. the mean temperature of heat addition (T_m) and temperature of steam at the entry of the turbine
4. the mean temperature of heat addition (T_m) and temperature of steam at exit of the condenser
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Question 3 : Which of these can be used as a fluid in the bottoming fluid?
1. Mercury
2. Ammonia
3. Calcium
4. Sodium
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Question 4 : What is the effect of increase in pressure at which heat is added on the pump work in the Rankine cycle?
1. the pump work increases with increase in pressure of heat addition
2. the pump work decreases with increase in pressure of heat addition
3. the pump work does not change with increase in pressure of heat addition
4. the pump work either increases or decreases with increase in pressure of heat addition
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Question 5 : What is the relation of mean temperature of heat addition and cycle efficiency?
1. both are inversely proportional
2. both are directly proportional
3. both are independent of each other
4. none of the mentioned
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Question 6 : Rankine efficiency of a steam power plant
1. improves in summer as compared to that in winter
2. improves in winter as compared to that in summer
3. is unaffected by climatic conditions
4. none of the mentioned
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Question 7 : For maximum efficiency of vapour power cycle, what should be the critical temperature of working fluid?
1. the working fluid should have critical temperature as low as possible
2. the working fluid should have critical temperature as high as possible
3. the critical temperature does not affect the efficiency of the vapour power cycle
4. none of the mentioned
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Question 8 : In the centrifugal compressor, total pressure varies
1. directly as the speed ratio
2. square of speed ratio
3. cube of the speed ratio
4. any of the mentioned
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Question 9 : What efficiencies of thermionic power generator have been realised?
1. 50-60%
2. 40-50%
3. 10-20%
4. 30-40%
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Question 10 : The gas turbine power plant mainly uses which among the following fuels?
1. Coal and Peat
2. Kerosene oil and diesel oil and residual oil
3. Gas oil
4. Natural gas and liquid petroleum fuel
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