Engineering Thermodynamics Set 2 MCQs

Q1 | Which one of the following statements iscorrect?

a) pressure is an extensiveproperty

b) density is an intensiveproperty

c) density is an extensiveproperty

d) temperature is anextensive property

Q2 | First law of thermodynamics deals with conservation of

a) mass

b) momentum

c) energy

d) heat

Q3 | Which one of the following processes orsystems does not involve heat

a) steady processes

b) isothermal processes

c) adiabatic processes

d) thermal processes

Q4 | Thermodynamic equillibrium is completely defined by the specification of

a) generalised displacements

b) internal energy

c) enthalpy

d) all of the above

Q5 | ………. Is not a property of the system

a) pressure

b) temperature

c) heat

d) specific volume

Q6 | In which of the following processes theexternal work done is not zero?

a) throttling

b) free expansion

c) constant volume process

d) constant pressureprocess

Q7 | The extension & compression of a helicalspring is an example of

a) irreversible process

b) reversible process

c) isothermal process

d) adiabatic process

Q8 | In all irrevesible processes, the entropy ofthe system

a) remains unaltered

b) reduces to zero

c) increases

d) none of the above

Q9 | Temperature of a gas is produced due towhich of the following?

a) attraction of molecules

b) repulsion of molecules

c) kinetic energy of molecules

d) all of the above

Q10 | The same volume of all gases at same temperatureand pressure wouldrepresent their

a) specific gravity

b) densities

c) specific weights

d) molecular weights

Q11 | First law of thermodynamics gives relationship between which of thefollowing?

a) heat & internal energy

b) heat & work

c) heat, work & properties of the system

d) various thermodynamics processes

Q12 | The temperature in a process in which work is done by expanding a gas underadiabatic condition will

a) decrease

b) increase

c) first decrease & then increase

d) remain unaltered

Q13 | On which of the following laws measurement of temperature is based?

a) joule\s law

b) zeroth law of thermodynamics

c) first law of thermodynamics

d) second law of thermodynamics

Q14 | The perpetual motion of the first kind is represented by which of the following?

a) a machine that continuously creates itsown energy

b) an engine with 100 percent efficiency

c) a fully reversible engine

d) none of the above

Q15 | Which of the following statements regarding a perpetual motion machine is correct?

a) it is an in efficient machine

b) it is non-thermodynamic machine

c) it is thermodynamic machine

d) it is hypothetic machine whose operation would violate the laws of thermodynamics

Q16 | Which of the following statements, regarding a property of system, iscorrect?

a) it is path function

b) it is a point function

c) it is always of intensive type

d) none of the above

Q17 | ……….. Is an intensive property

a) specific volume

b) total volume

c) total mass

d) total energy of a system

Q18 | A system is said to be in thermodynamicequilibrium if it is in

a) chemical equilibrium

b) thermal equilibrium

c) mechanical equilibrium

d) all of the above

Q19 | The basis for measuring thermodynamic property of temperature is given by ……. Law of thermodynamics

a) zeroth

b) first

c) second

d) third

Q20 | As differentials, heat & work would bedescribed mathematically as

a) exact

b) inexact

c) point function

d) discontinuity

Q21 | Which of the following is an openthermodynamic system?

a) pressure cooker

b) manual ice cream freezer

c) centrifugal pump

d) none of the above

Q22 | ……… is a non-quasistatic process

a) free expansion of gas

b) expansion of gas in a cylinder under constantpressure

c) rapid leakage of air from a bicycle tyre

d) gradual compression of gas inside a piston-cylinderarrangement

Q23 | Choose the correct statement

a) pressure, temp. &entropy are extensive properties

b) pressure, temp. &entropy are intensive properties

c) pressure, volume & temp. are extensive properties

d) volume & entropy are extensive properties

Q24 | The first law of thermodynamics defines

a) entropy

b) internal energy

c) work

d) heat

Q25 | A process becomes irreversible due to

a) work performed by thesystem

b) work performed uponthe system

c) heat supplied to the system

d) friction in the system