Thermal Engineering II Set 13

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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