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Thermodynamics
Calculation of Work and Heat
Marks 1Marks 2
Entropy and Irreversibility
Marks 1Marks 2Marks 5
Properties of Pure Substances
Marks 1Marks 2
Basic Concepts and Zeroth Law
Marks 1Marks 2
First Law of Thermodynamics
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Rankine Cycle
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Availability
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Second Law of Thermodynamics
Marks 1Marks 2
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1
GATE ME 2014 Set 3
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following pairs of equations describes an irreversible heat engine?
A
$$\oint {\delta Q} > 0\,\,$$ and $$\oint {{{\delta Q} \over T}} < 0$$
B
$$\oint {\delta Q} > 0\,\,\,\,and\,\,\,\oint {{{\delta Q} \over T}} < 0$$
C
$$\oint {\delta Q} > 0\,\,\,\,and\,\,\,\oint {{{\delta Q} \over T}} > 0$$
D
$$\oint {\delta Q} < 0\,\,\,\,and\,\,\,\oint {{{\delta Q} \over T}} > 0$$
2
GATE ME 2010
MCQ (Single Correct Answer)
+1
-0.3
One kilogram of water at room temperature is brought into contact with a high temperature thermal reservoir. The entropy change of the universe is
A
equal to entropy change of the reservoir
B
equal to entropy change of water
C
equal to zero
D
always positive
3
GATE ME 2009
MCQ (Single Correct Answer)
+1
-0.3
If a closed system is undergoing an irreversible process, the entropy of the system
A
Must increase
B
Always remains constant
C
Must decrease
D
Can increase, decrease or remain constant
4
GATE ME 2008
MCQ (Single Correct Answer)
+1
-0.3
$$2$$ moles of oxygen are mixed adiabatically with another $$2$$ moles of oxygen in mixing chamber, so that the final total pressure and temperature of the mixture become same as those of the individual constituents at, their initial states. The universal gas constant is given as $$R$$. The change in entropy due to mixing, per mole of oxygen, is given by
A
$$-R$$ $$ln2$$
B
$$0$$
C
$$R$$ $$ln2$$
D
$$R$$ $$ln4$$
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Questions Asked from Marks 1
GATE ME 2014 Set 3 (1) GATE ME 2010 (1) GATE ME 2009 (1) GATE ME 2008 (1) GATE ME 2007 (1) GATE ME 1997 (2) GATE ME 1994 (2) GATE ME 1993 (2)
GATE ME Subjects
Engineering Mechanics
Machine Design
Strength of Materials
Heat Transfer
Production Engineering
Industrial Engineering
Turbo Machinery
Theory of Machines
Engineering Mathematics
Fluid Mechanics
Thermodynamics
General Aptitude