1
GATE ME 2015 Set 2
MCQ (Single Correct Answer)
+1
-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
A
only (i) and (ii) are correct
B
only (ii) and (iii) are correct
C
only (i) and (iii) are correct
D
(i), (ii) and (iii) are correct
2
GATE ME 2014 Set 1
MCQ (Single Correct Answer)
+1
-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
A
$$0.34$$
B
$$2.48$$
C
$$2.92$$
D
$$3.43$$
3
GATE ME 2003
MCQ (Single Correct Answer)
+1
-0.3
Considering the variation of static pressure and absolute velocity in an impulse stream turbine, across one row of moving blades
A
both pressure and velocity decrease
B
pressure decreases but velocity increases
C
pressure remains constant, while velocity increases
D
pressure remains constant, while velocity decreases
4
GATE ME 2003
MCQ (Single Correct Answer)
+1
-0.3
In a Rankine cycle, regeneration results in higher efficiency because
A
pressure inside the boiler increases
B
heat is added before steam enters the low pressure turbine
C
average temperature of heat addition in the boiler increases
D
total work delivered by the turbine increases
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