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GATE ME 2022: Power Plant (App update required to attempt this test)
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Question 1
In a gas turbine plant, the compressor efficiency is 85% and the maximum cycle temperature is 875 
. The working fluid is air with 
which enters the compressor at 1 bar and 
under an operating pressure ratio of The temperature of air leaving the compressor in 
is ________
. The working fluid is air with which enters the compressor at 1 bar and under an operating pressure ratio of The temperature of air leaving the compressor in is ________Question 2
A single stage reciprocating air compressor takes in 1m3 of air per minute at 1.013 bar and 15°C and delivers it at 7 bar. The law of compression follows pv1.4 for the process is , then the power required to compress the airin kW is ________
Question 3
A Rankine cycle operates between pressures of 80 bar and 0.1 bar. The maximum cycle temperature is 600 °c. Relevant steam table extract is given below. Thermal efficiency of the cycle is ____ %.
Question 4
A single stage air reciprocating compressor has a clearance ratio of 0.04 and works under a pressure ratio of 5. The volumetric efficiency of the compressor in percentage is_______
Question 5
A multi-stage air compressor with intercooling is to elevate the pressure from 1 bar to 125 bar such that the pressure ratio per stage will not exceed 4. The required number of stages will be _______
Question 6
In a single heater regenerative cycle, steam enters the turbine at 30 bar 300 °C and condenser pressure is 0.1 bar. The feed water heater is direct contact type which operates at 5 bar. Calculate the steam extracted from turbine to heater (in kg/kg of steam flow) in the cycle. The enthalpies of steam at different locations of the cycle are given in the table below. Pump work may be neglected.
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