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Application of Thermodynamics Quiz 1

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Question 1

Calculate the efficiency of given Brayton cycle

Question 2

In the air cycle refrigeration system ______.

Question 3

In a Diesel cycle, cut off takes place at 9% of stroke volume if the compression ratio is 16 then what will be the expansion ratio?

Question 4

In engine produces 10 kW brake power while working with a brake thermal efficiency of 30%. If the calorific value of the fuel used is 40,000 kJ/kg, then what is the fuel consumption?

Question 5

In a steam power plant, two cycles are coupled in series, where the first cycle has an efficiency of 30% and the second cycle has an efficiency of 20%. Determine the combined overall cycle efficiency:

Question 6

In Rankine cycle, when the steam pressure in boiler increases keeping maximum temperature unchanged

Question 7

What is the specific steam consumption (in kg/kWh) of the Rankine cycle based on net output if the enthalpies at turbine inlet and exit are 3200 kJ/kg and 2050 kJ/kg respectively. Specific work by pump is 1.5 kJ/kg.

Question 8

If the heat rejection factor is 1.5. What will be the COP______?

Question 9

The entry nozzle angle of an elementary Impulse turbine is

. For maximal diagram efficiency, calculate the

ratio

Question 10

Air at 15°C DBT, 60% of relative humidity is heated to 45°C using an electric heater. The surface temp. of the coil is 55°C. Then what will be contact factor of heating coil.

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Tags :

ESE & GATE ME Thermodynamics

May 5ESE & GATE ME