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GATE 2023 II First Law of Thermodynamics II Quiz 39

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Question 1

During the charging of a storage battery, the current i is 25 A and the voltage E is 10.8 V. The rate of heat transfer from the battery is 9 W. The rate of increasing of the internal energy __________.

Question 2

For an insulated nozzle, SFEE of the control surface gives (considering change in PE is zero and inlet velocity is small compared to exit velocity)

Question 3

In the case of free expansion ___________.

Question 4

For an adiabatic process, relation between open system work and close system work is given by

Question 5

Work done will be zero in case of

Question 6

A fully charged battery slowly starts to discharge when being unused for a long period of time. During discharging it loses 1500kJ to the surroundings. Later, the battery is slowly charged by consuming 0.7kW hrs. of electricity. The heat transferred during Charging process is _________ kJ

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ESE & GATE ME Thermodynamics

Dec 23ESE & GATE ME