GATE ME 2016 Set 1 | Rankine Cycle Question 5 | Thermodynamics

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GATE ME 2016 Set 1

MCQ (Single Correct Answer)

-0.3

The INCORRECT statement about regeneration in vapor power cycle is that

It increases the irreversibility by adding the liquid with higher energy content to the steam generator

Heat is exchanged between the expanding fluid in the turbine and the compressed fluid before heat addition

The principle is similar to the principle of Stirling gas cycle

It is practically implemented by providing feed water heaters

GATE ME 2015 Set 2

MCQ (Single Correct Answer)

-0.3

Which of the following statements regarding a Rankine cycle with reheating are TRUE?
(i) increase in average temperature of heat addition
(ii) reduction in thermal efficiency
(iii) drier steam at the turbine exit

only (i) and (ii) are correct

only (ii) and (iii) are correct

only (i) and (iii) are correct

(i), (ii) and (iii) are correct

GATE ME 2014 Set 1

MCQ (Single Correct Answer)

-0.3

In a power plant, water (density $$ = 1000\,\,kg/{m^3}$$ ) is pumped from $$80$$ $$kPa$$ to $$3$$ $$MPa$$. The pump has an isentropic efficiency of $$0.85.$$ Assuming that the temperature of the water remains the same, the specific work (in $$kJ/kg$$) supplied to the pump is

$$0.34$$

$$2.48$$

$$2.92$$

$$3.43$$

GATE ME 2003

MCQ (Single Correct Answer)

-0.3

In a Rankine cycle, regeneration results in higher efficiency because

pressure inside the boiler increases

heat is added before steam enters the low pressure turbine

average temperature of heat addition in the boiler increases

total work delivered by the turbine increases