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ISRO Mechanical Exam: Thermodynamics Quiz
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Question 1
The specific heat of diatomic gas at constant pressure is given by (R = universal gas constant and M = molecular weight of gas)
Question 2
For a perfect gas match list-I with list-II:
List-I
A) Isobaric thermal expansion coefficient
B) Isothermal compressibility
C) Isentropic compressibility
D) Joule – Thomson coefficient
List-II
1) 0
2)
3) 1/V
4) 1/T
5) 1/P
6) 1/
p
List-I
A) Isobaric thermal expansion coefficient
B) Isothermal compressibility
C) Isentropic compressibility
D) Joule – Thomson coefficient
List-II
1) 0
2)
3) 1/V
4) 1/T
5) 1/P
6) 1/
p Question 3
The cubic capacity of a four stroke over square S.I. engine is 490 cc. The over square ratio is 0.909. The clearance volume is 54.4 cc. The crank radius (in mm) of the engine is
Question 4
Environment friendly refrigerant R134aisused in the new generation domestic refrigerators. Its chemical formula is
Question 5
1600 kJ of energy is transferred from a heat reservoir at 800 K to another heat reservoir at 400 K. The amount of entropy generated during the process would be (in kJ/K) ___
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