SSC JE Mechanical Engineering 22nd Jan 2018 Shift-1

Instructions

For the following questions answer them individually

Question 141

Which gas will produce the highest efficiency in an ideal Otto cycle for same compression ratio?

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Question 142

In Mollier diagram, the isotherm in the superheated region at low pressures becomes ________.

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Question 143

If the heat rejected from the system is zero, then which of the following statements will hold TRUE?

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Question 144

Clausius’ statement and Kelvin-Planck’s statement are ________.

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Question 145

For the same heat added and the same compression ratio, ________.

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Question 146

A reversible engine operates between temperature $$T_1$$ and $$T_2$$. The energy rejected by this engine acts as an input for another reversible engine at temperature $$T_2$$, which rejects to a reservoir at temperature $$T_3$$. What is the relation between $$T_1, T_2$$ and $$T_3$$?

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Question 147

Which equation defines the enthalpy (h) of a system?

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Question 148

Which gas can attain the highest efficiency for the same compression rise?

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Question 149

In Clausius theorem the reversible path is substituted by ________.

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Question 150

Which of the relation represents an irreversible and possible process?

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