Thermodynamics-Carnot Engine and Its Efficiency (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 2 of 2

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Question number: 1

» Thermodynamics » Carnot Engine and Its Efficiency

MCQ▾

Question

A reversible engine converts 15th of the heat input into work. When the temperature of the sink is reduced by 750 C, the efficiency of the engine is doubled. The temperatures in degree centigrade of the source and the sink are –

Choices

Choice (4) Response

a.

102, 27

b.

95, 27

c.

100, 27

d.

112, 27

Question number: 2

» Thermodynamics » Carnot Engine and Its Efficiency

MCQ▾

Question

A Carnot engine has efficiency 30 % (heat sink 270 C). To increase efficiency by 20%, the temperature be increased by,

Choices

Choice (4) Response

a.

40.15 K

b.

15.7 K

c.

20.25 K

d.

55.7 K

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