Thermodynamics-Carnot Engine and Its Efficiency (NEST (National Entrance Screening Test) Physics): Questions 1 - 2 of 2

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Question number: 1

» Thermodynamics » Carnot Engine and Its Efficiency

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Appeared in Year: 2013

MCQ▾

Question

An engine absorbs heat at a temperature of and exhausts heat at a temperature of . The engine operates at the maximum possible efficiency. The amount of work the engine performs for of heat input can be –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2

» Thermodynamics » Carnot Engine and Its Efficiency

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Appeared in Year: 2015

MCQ▾

Question

A Carnot engine is made to operate as a refrigerator. This refrigerator is used to freeze water at to ice at and the heat from the working substance is discharged into a large tank containing water at . The latent heat of fusion of ice is . The minimum amount of work required to freeze of water is closed to –

Choices

Choice (4) Response

a.

b.

c.

d.

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