1
GATE ME 2014 Set 1
MCQ (Single Correct Answer)
+2
-0.6
A reversible heat engine receives $$2$$ $$kJ$$ of heat from a reservoir at $$1000$$ $$K$$ and a certain amount of heat from a reservoir at $$800$$ $$K$$. It rejects $$1$$ $$kJ$$ of heat to a reservoir at $$400$$ $$K.$$ The net work output (in $$kJ$$) of the cycle is
A
$$0.8$$
B
$$1.0$$
C
$$1.4$$
D
$$2.0$$
2
GATE ME 2007
MCQ (Single Correct Answer)
+2
-0.6
A heat transformer is a device that transfers a part of the heat, supplied to it at an intermediate temperature, to a high temperature reservoir while rejecting the remaining part to a low temperature heat sink. In such a heat transformer, $$100kJ$$ of heat is supplied at $$350$$ $$K.$$ The maximum amount of heat in $$kJ$$ that can be transferred to $$400K,$$ when the rest is rejected to a heat sink at $$300K$$ is
A
$$12.50$$
B
$$14.29$$
C
$$33.33$$
D
$$57.14$$
3
GATE ME 2007
MCQ (Single Correct Answer)
+2
-0.6
An irreversible heat engine extracts heat from a high temperature source at a rate of $$100kW$$ and rejects heat to a sink at a rate of $$50kW.$$ The entire work output of the heat engine is used to drive a reversible heat pump operating between a set of independent isothermal heat reservoirs at $${17^ \circ }C$$ and $${75^ \circ }C$$. The rate (in $$kW$$) at which the heat pump delivers heat to its high temperature sink is
A
$$50$$
B
$$250$$
C
$$300$$
D
$$360$$
4
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
A heat engine having an efficiency of $$70\% $$ is used to drive a refrigerator having a coefficient of performance of $$5.$$ The energy absorbed from low temperature reservoir by the refrigerator for each $$kJ$$ of energy absorbed from high temperature source by the engine is
A
$$0.14$$ $$kJ$$
B
$$0.71$$ $$kJ$$
C
$$3.5$$ $$kJ$$
D
$$7.1$$ $$kJ$$
GATE ME Subjects
Turbo Machinery
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Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12