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This set of Thermal Engineering 2 Multiple Choice Questions & Answers (MCQs) focuses on Thermal Engineering II Set 13
Q1 | The use of which of the following becomes necessary during expansion of steam?
- reheat
- regeneration
- refrigeration
- superheat
Q2 | What is the specific heat of the ideal working fluid used in vapour power cycle?
- should be constant
- should be large
- should be small
- none of the mentioned
Q3 | What is the importance of the freezing point of the working fluid in the vapour power cycle?
- freezing point of working fluid should be below the room temperature
- freezing point of working fluid should be above the room temperature
- freezing point of working fluid should be equal to the room temperature
- does not have any importance
Q4 | The engines which are operating on gas power cycle are?
- cyclic
- non-cyclic
- either cyclic or non-cyclic
- none of the mentioned
Q5 | Energy recovery is typically via production of __________
- gas
- heat
- light
- steam
Q6 | Which of the following industrial process uses waste as a fuel?
- cement kilns
- lead manufacturing
- acid manufacturing
- sulphur manufacturing
Q7 | What is the combustion temperature range in cement kiln incineration?
- 1300-1600
- 1350-1650
- 1250-1450
- 1235-1600
Q8 | Non-volatile heavy metals in kiln are fixed into __________
- clinker’s crystalline structure
- fumes
- solid lump
- slag
Q9 | Which of the following waste types are not suitable for co-combustion in cement kilns?
- chlorine
- hydrogen
- calcium
- carbonate
Q10 | . Due to the limits, upper efficiency of steam turbines is fixed to _________
- 10-15%
- 25-45%
- 20-40%
- 35-45%
Q11 | 5. How many sections does waste heat recovery boiler have in steam generators?
- 1
- 2
- 3
- 4
Q12 | Turbines that are run by exhaust gases are called _______
- power recovery turbines
- stepped turbines
- turbo compounded engine
- none of the mentioned
Q13 | Combination of two or more thermodynamic processes gives _________
- decrease in efficiency
- increase in efficiency
- increases the temperature at exhaust
- none of the mentioned
Q14 | By using combined cycle steam and gas power plant _________
- specific fuel consumption can be decreased
- efficiency increased
- specific fuel consumption can be decreased and efficiency increased
- none of the mentioned
Q15 | What are turbo-compound engines?
- turbines run at exhausts of otto and diesel cycles
- combination of turbofan and turbojet engines
- combination of turboprop and turbofan engines
- none of the mentioned
Q16 | The mercury steam cycle represents how many coupled Rankine cycles?
- 1
- 2
- 3
- 4
Q17 | In the mercury steam cycle, the mercury cycle is called?
- bottoming cycle
- middle cycle
- topping cycle
- none of the mentioned
Q18 | In the mercury steam cycle, the steam cycle is called?
- bottoming cycle
- middle cycle
- topping cycle
- none of the mentioned
Q19 | Apart from mercury & steam, which of these is a component of tertiary cycle?
- nitrogen di-oxide
- water
- carbon di-oxide
- sulphur di-oxide
Q20 | The addition of sulphur dioxide in a tertiary cycle is at?
- high temperature
- low temperature
- too high temperature
- none of the mentioned
Q21 | Which of these can also be used as a topping fluid?
- sodium
- calcium
- boron
- titanium
Q22 | Which of these can be used as a fluid in the bottoming fluid?
- mercury
- ammonia
- calcium
- sodium
Q23 | In case of Sodium-mercury-steam cycle, which is the topping fluid?
- mercury
- steam
- sodium
- cannot say
Q24 | In case of mercury-steam-sulphur dioxide cycle, which is the bottoming fluid?
- mercury
- steam
- sulphur dioxide
- cannot say
Q25 | The total loss in a tertiary cycle is?
- sum of losses in the individual cycles
- product of losses in the individual cycles
- sum of products of individual losses
- none of the mentioned