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AE-JE (ME) || Thermodynamics Quiz - 3

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Question 1

When a reversible process undergoes a complete cycle then the change of entropy will be

Question 2

The final temperatures of two bodies, initially at T₁ and T₂ can range from

Question 3

In a Carnot Engine, when working substance gives heat to the sink_____

Question 4

Which of the following relation is correct?

Question 5

Two Carnot heat engines are operating in series such that the heat sink of the first engine serves as the heat source of the second one. It the source temperature of the first engine is 1327 °C, the sink temperature of the second engine is 127 °C, and the thermal efficiency of both the engines are the same, the temperature of the intermediate reservoir is:

Question 6

A reversible heat engine works between two thermal reservoir having source temperature 777°C & sink temp. 27°C. If the heat supplied to engine 70 kW. Calculate the work done by the engine ___________.

Question 7

The latent heat of vaporization of a fluid at 100K is 2560 KJ/kg. What is the change of entropy associated with the evaporation?

Question 8

Consider the figure shown below

The heat engine is

Question 9

Which of the following violate the second law __________?

Question 10

A reversible heat engine rejects 80% of the heat supplied during a cycle of operation. If the engine is reversed and operates as a heat pump, then its coefficient of performance shall be

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AE & JE Exams Mechanical Engineering

Nov 10AE & JE Exams