SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2

Instructions

For the following questions answer them individually

SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 141


Which of the following statement is TRUE for work output of an ideal Otto cycle?

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SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 142


Which below stated statement is TRUE abouta reservoir of heat?

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SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 143


If a heat engine produces work without the consumption of energy, then what kind of machine is this?

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SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 144


In a P-T phase diagram of a pure substance, which of the following lines separates solid and liquid region?

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SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 145


What is the drynessfraction (x) of a saturated liquid-vapour mixture?

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SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 146


A gas is compressedfrictionless from an initial state of 0.4 m$$^3$$ and 0.1 MPa to a final state of 0.2 m$$^3$$ and 0.1 MPa. There is a transfer of 35 kJ of heat from the gas. Whatis the change in internal energy (in kJ)?

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SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 147


What is the velocity of steam (in m/sec) at exit across a steam whistle which is perfectly insulated and does not perform any work and undergoes a drop of 0.2 kJ/kg in enthalpy from entry to exit?

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SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 148


A heat engine performs a work of 100 kJ per cycle. The efficiency of the engine is 50%. Whatwill be the amount of heat rejected (in kJ) per cycle?

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SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 149


What the region (2) in the p-V diagram given below is called?

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SSC JE Mechanical Engineering 22nd Jan 2018 Shift-2 - Question 150


What happens during a throttling process?

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