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Thermodynamics QUESTIONS AND ANSWERS

Mechanical Engineering : Thermodynamics QUESTIONS AND ANSWERS :: part4 : 1 to 5

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

1.According to first law of thermodynamics

work done by a system is equal to heat transferred by the system

total internal energy of a system during a process remains constant

internal energy, enthalpy and entropy during a process remain constant

total energy of a system remains constant

entropy of a system remains constant.

2.Energy can neither be created nor destroyed but can be converted from one form to other is inferred from

zeroth low of thermodynamic

first law of thermodynamics

second law to thermodynamics

basic law of thermodynamics

claussius statement.

3.A gas is compressed in a cylinder by a movable piston to a volume one-half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be

300 Nm

300,000 Nm

30 Nm

3000 Nm

30,000 Nm.

4.Carnot cycle has maximum efficiency for

reversible engine

irreversible engine

new engine

petrol engine

diesel engine.

5.Addition of heat at constant pressure to a gas results in