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SSC-JE ME || Thermodynamics Quiz 2

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Question 1

An ideal gas of mass 0.5 kg has a pressure of 600 kPa, a temperature of 77

and a volume of 0.08 m³. This gas undergoes an irreversible process to a final pressure of 600 kPa and final volume of 0.12 m³, during which the heat addition and work done on gas are 2 kJ and 30 kJ respectively. The value of C_v of gas is

Question 2

Which of the following represents the perpetual motion of the first kind

Question 3

A closed system is one in which ____.

Question 4

Which of the following statements are TRUE with respect to heat and work?
(i) They are boundary phenomena
(ii) They are exact differentials
(iii) They are path functions

Question 5

What is the velocity of steam (in m/sec) at exit across a steam whistle which is perfectly insulated and does not perform any work and undergoes a drop of 0.2 kJ/kg in enthalpy from entry to exit?

Question 6

In an internal combustion engine, during the compression stroke the heat rejected to the cooling water is 50 kJ/kg and the work input is 100 kJ/kg. What is the change in internal energy of the working fluid ?

Question 7

A closed gaseous system undergoes a reversible constant pressure process at 2 bar in which 100 kJ of heat is rejected and the volume changes from 0.2 m³ to 0.1 m³. The change in the internal energy of the system is

Question 8

For a system of ideal gas, in a reversible isothermal process the heat transferred to the system is 0.75 kW. The internal energy at the initial point is 2.05 kJ/s. Determine the work done during the process.

Question 9

When the heat transfer into a system is Greater than the work transfer out of the system, then

Question 10

Calculate the net heat interaction (kJ) for the cycle shown in the figure.

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