Mechanical Engineering Questions And Answers :: Thermodynamics: part4



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

raising its temperature
raising its pressure
raising its volume
raising its temperature and doing external work
doing external work.

More Thermodynamics QUESTIONS AND ANSWERS available in next pages

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