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SSC-JE ME || Thermodynamics Full Revision Quiz
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Question 1
Properties of substances like pressure, temperature and density, in thermodynamic co-ordinates are ___________.
Question 2
Ratio of specific heat for an ideal gas is given by
Question 3
Which of the following represents the perpetual motion of the first kind
Question 4
The latent heat of evaporation of water at 1000C is 2560kJ/ kg. What is the change of entropy associated with the evaporation?
Question 5
An ideal gas goes through the cycle (1-2-3-4-1) given in the figure.
What is the value of (V2 – V3)?
Question 6
The work required for compression in a closed system increases when the value of ‘n’ (the index of compression) ____________.
Question 7
First law of thermodynamics ________.
Question 8
Two blocks of iron and copper, both initially at 80oC, are dropped into a large lake at 15oC. The mass of the iron and copper blocks are 50kg and 20kg respectively. After a while the system is in thermal equilibrium due to heat transfer between the blocks and the lake water. What will
be the total entropy change for this process?
be the total entropy change for this process?
(Data : Ciron = 0.45 kJ/kg-oC, Ccopper = 0.386 kJ/kg-oC)
Question 9
Dryness fraction is defines as ratio of _______ in a liquid- vapour mixture.
Question 10
An ideal gas goes through two processes as given in the P-V plot.
Which of the following statement is CORRECT.
Question 11
A vapor power cycle is being considered. Steam enters boiler at 8.4MPa, but unlike ideal boiler, steam leaves it at 8MPa and 5000C. Because of losses in the pipeline, steam enters the Turbine at 7.5MPa, 4500C. Turbine expands it to 10kPa.
Properties of the steam, at different locations of the cycle is given, in the table.
Efficiency of the cycle is ______%. [Neglect the pump work]
Question 12
Slope of constant pressure line on temperature entropy diagram is given by.
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