ISRO Scientist or Engineer Refrigeration & Air-Conditioning 2015

Instructions

For the following questions answer them individually

Question 11

Two cars are 10 km apart and moving in the same direction at speed of 40 km/hr. A car moving in opposite direction meets these cars at interval of 10 minutes. At what speed the
other car is moving?

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Question 12

Diagram factor is defined as the ratio of

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Question 13

A liquid compressed in a cylinder has a volume of 0.04 m$$^3$$ at 100 kg/cm$$^2$$ and a volume of 0.39 m$$^3$$ at 200 kg/cm$$^2$$. The bulk modulusofelasticity of liquid is

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Question 14

The equation $$\left\{p + \frac{a}{v^2}\right\}(v - b) = R$$ is known as

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Question 15

Tumblingis the process of

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Question 16

In Electrolux refrigerator

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Question 17

According to theorem of perpendicular axes, if $$I_{xx}$$ and $$I_{yy}$$ be the M.I of a lamina about xx and yy axis, then M.I. of the lamina about axis zz, which is perpendicular to xx and yy, equal to

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Question 18

A perfect gas at $$27^\circ C$$ is heated at constant pressuretill its volume is double. The final temperature is

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Question 19

The value of acceleration due to gravity at moon is $$\frac{g}{6}$$, where g is the value of acceleration due to gravity at earth. The valueof frequency of oscillation of simple pendulum on moon as compared to earth will be

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Question 20

Maximum shear stress in a Mohr’s circle is

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