ISRO Scientist or Engineer Refrigeration & Air-Conditioning 2017


For the following questions answer them individually

Question 1

An insulated rigid vessel contains a mixture of fuel and air. The mixture is ignited by a minute spark. The contents of vessel experience

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Question 2

The specific heat of ideal gas depend on

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Question 3

Thermal power plant works on

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Question 4

In an isothermal process, the internal energy of molecules

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Question 5

For reversible adiabatic process, change in entropy is

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Question 6

A cylinder contains 5 m$$^3$$ of an ideal gas at a pressure of 1. This gas is compressed in a reversible isothermal process till its pressure increases to 5 bar. The work in kJ
required for this process is

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Question 7

A steel ball of mass 1 kg and specific heat 0.4 kj/kg is at a temperature of 60 deg C. It is dropped into 1 kg of water at 20 deg C. The final steady temperature of water is

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Question 8

A Bell-Coleman cycle is a reversed

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Question 9

A free bar of length l is uniformly heated from $$0^\circ C$$ to a temperature $$t^\circ C$$. $$\alpha$$ is the coefficient of linear expansion and E is the modulus of elasticity. The stress in the bar is

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Question 10

The materials having same elastic properties in all directions are called

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