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Positive value of Joule-Thomson coefficient of a fluid means

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A gas having a negative Joule-Thompson coefficient (m<0), when throttled, will

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Global warming is caused by

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In a vapour compression refrigeration system, liquid to suction heat exchanger is used to

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Find out the value of critical pressure ratio where the degree of regeneration between zero.

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If the expansion process is polytropic, calculate power output, rate of heat transfer and rate of change in entropy

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A Brayton cycle

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In an ideal air – standard Gas turbine cycle

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There is a loss of 10% of calorific value in the combustion chamber.

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Calculate the cycle efficiency given that the efficiency of the regenerator and the adiabatic efficiency.

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The compressor and turbine are isentropic.

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Calculate the mass flow rate of air through the plant and the rate of fuel consumption.

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gas turbine is supplied with gas at 5 bar and 1000 K and expands it adiabatically to 1 bar.

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The mass flow rate (in kg/s) of air required in the cycle is

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The power required by the compressor in kW/kg of gas flow rate is

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The approximate final temperatures in Kelvin at the end of the compression and expansion processes are respectively.

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The pressure ratio of a gas power plant cycle

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The work developed by the turbine per kg of gas flow is

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Isothermal compression

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A gas turbine cycle with heat exchange and reheating improves

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