SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2

Instructions

For the following questions answer them individually

Question 161

The maximum heat content at $$100^\circ C$$ in cal/m$$^3$$ is possessed by the following gas.

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Question 162

The ratio of the specific heat at constant pressure to specific heat at constant volume for air is equal to

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Question 163

Heat pump is a device which

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Question 164

Total heat supplied at constant volume is

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Question 165

The efficiency of the diesel cycle increases

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Question 166

In a polytropic process
(a) $$\frac{T_1}{T_2} = \left(\frac{V_2}{V_1}\right)^{n - \frac{1}{n}} = \left(\frac{p_1}{p_2}\right)^{n - 1}$$
(b) $$\frac{T_1}{T_2} = \left(\frac{V_2}{V_1}\right)^{n - 1} = \left(\frac{p_1}{p_2}\right)^{n}$$
(c) $$\frac{T_1}{T_2} = \left(\frac{V_2}{V_1}\right)^{n - 1} = \left(\frac{p_2}{p_1}\right)^{n - 1}$$
(d) $$\frac{T_1}{T_2} = \left(\frac{V_2}{V_1}\right)^{n - 1} = \left(\frac{p_2}{p_1}\right)^{n - \frac{1}{n}}$$

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Question 167

The volumetric analysis of dry products of combustion

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Question 168

A carnot engine rejects 30% of absorbed heat at a sink at $$30^\circ C$$. The temperature of the heat source is

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Question 169

Which one of the following phenomena occurs whengasin a piston-in-cylinder assembly expands reversibly at constant pressure?

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Question 170

A Carnot heat pump works between temperature limits of $$277^\circ C$$ and $$27^\circ C$$. Its COP is

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