SSC JE Mechanical Engineering 25th Jan 2018 Shift-2

Instructions

For the following questions answer them individually

Question 161

Which of the following processesis irreversible process?

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Question 162

For any gas

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Question 163

General energy equation for system boiler is given by

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Question 164

In orast apparatus CuCl is used to absorb

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Question 165

General energy equation for a steady flow system is:
(a) $$H_1 + \frac{V_1^2}{2gj} + \frac{Z_1}{J} + Q = \frac{V_2^2}{2gJ} + Losses$$
(b) $$H_1 + \frac{V_1^2}{2gj} + \frac{Z_1}{J} + Q = \frac{V_2^2}{2gJ} + workdone + Losses$$
(c) $$H_1 + \frac{V_1^2}{2gj} + \frac{Z_1}{J} + Q = H_2 + \frac{V_2^2}{2gJ} + \frac{V_2}{J} + workdone + Losses$$
(d) $$H_1 + \frac{V_1^2}{2gj} + \frac{Z_1}{J} + Q = H_2 = \frac{V_2^2}{2gJ} + \frac{Z_1}{J} + workdone + Losses$$

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Question 166

The polytropic process on p-V diagram is represented by the figure.

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Question 167

In a throttling process, which one of the following parameters remains constant?

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Question 168

Zeroth law of thermodynamics states that

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Question 169

The heat absorbed or rejected during a polytropic process is equal to:

(a) $$\left(\frac{\gamma - n}{\gamma - 1}\right)^{\frac{1}{2}} \times workdone$$

(b) $$\left(\frac{\gamma - n}{n - 1}\right)^{\frac{1}{2}} \times workdone$$

(c) $$\left(\frac{\gamma - n}{\gamma - 1}\right) \times workdone$$

(d) $$\left(\frac{\gamma - n}{\gamma - 1}\right)^2 \times workdone$$

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Question 170

In a cycle, the heatis rejected at

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