Q. The use of which of the following becomes necessary during expansion of steam?

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Q. Which is the drawback of the steam as a working substance in a power cycle?

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Q. For maximum efficiency of vapour power cycle, what should be the critical temperature of working fluid?

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Q. What is the specific heat of the ideal working fluid used in vapour power cycle?

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Q. What is the importance of the freezing point of the working fluid in the vapour power cycle?

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Q. When two vapour cycles are coupled in series and heat rejected by one is absorbed by another, the cycle is called as?

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Q. The engines which are operating on gas power cycle are?

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Q. Rankine cycle efficiency of a good steam power plant may be in the range of ___________

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Q. In Rankine cycle the work output from the turbine is given by ___________

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Q. Regenerative heating i.e., bleeding steam to reheat feed water to boiler ___________

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Q. Regenerative cycle thermal efficiency ___________

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Q. In a regenerative feed heating cycle, the optimum value of the fraction of steam extracted for feed heating ___________

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Q. In a regenerative feed heating cycle, the greatest economy is affected ___________

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Q. What is the maximum percentage gain in Regenerative feed heating cycle thermal efficiency?

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Q. How can we differentiate Rankine cycle from Carnot cycle?

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Q. What is the relation between efficiencies of Rankine cycle and Carnot cycle for the same pressure ratio?

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Q. The maximum efficiency of Rankine cycle (ηᵣ) is the function of ___________

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Q. What is the effect of superheated steam on efficiency of Rankine cycle?

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Q. What is the effect of increase in pressure at which heat is added on the pump work in the Rankine cycle?

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Q. When the pressure at which heat is added in Rankine cycle increases, the moisture content at the turbine exhaust?

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