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ISRO ME 2019 Thermodynamics Booster Quiz -6

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Question 1

Choose the wrong statement about the regenerative vapour power cycle employing bled steam form feed water heating:

Question 2

For an otto cycle mean effective pressure is 15 bar. Bore diameter of the cyclinder is 0.2m and stroke length is 0.5 m. Heat supplied at constant volume is 30 kJ/cycle. Find cycle efficiency.

Question 3

Moist air at 1.013 bar and 30 °C contains 10 gm of water vapour per kg of dry air. Assuming that air and water vapour mixture to behave as an ideal gas and saturation pressure of water vapour at 30 °C is 4.167 kPa relative humidity of air will be

Question 4

The inorganic refrigerants namely R 717, R 744 and R 764 respectively represents

Question 5

Air enters an adiabatic nozzle at 3 bar and 200 °C with a velocity of 10 m/s and leave the nozzle at 2 bar and 150°C. Exit velocity of the air will be (in m/sec). Take C_p air=1.005 kJ/kg-K.

Question 6

In reversible non-flow process, the work done by a system in accordance with $Description: Description: 02_Thermodynamics_BLok_files\image045.png$ where P is the pressure in bar.Evaluate the work done on the system (in kJ) as pressure increases from 0.5 bar to 10 bar

Question 7

A cyclic device operates between three thermal reservoirs, as shown in the figure. Interactions between the cyclic device and the respective thermal reservoirs are shown in the figure and all are in the form of heat transfer. The cyclic device can be _____.

Question 8

Thermodynamic relation for the isothermal compressibility is

Question 9

In a system, 500 kJ of energy is transferred from a heat reservoir at 1200 K to a heat reservoir at 350 K. If the ambient temperature is 27 °C then the loss of available energy due to heat transfer process is ____kJ.

Question 10

A 1000 Ω resistor carrying a current of 10 A for 2 sec is kept at a constant temperature of 27 °C by a stream of cooling water. Entropy change of the universe is ________ J/K.

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ESE & GATE ME Thermodynamics

Apr 22ESE & GATE ME