Which of the following processes are thermodynamically reversible?

The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process.

A

Isobaric

B

Isothermal

C

Adiabatic

D

None of these

Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor?

A

Molten sodium cooled

B

CO₂ gas cooled

C

Pressurised water

D

Boiling water

Which of the following processes can not be made reversible even under ideal condition of operation?

A

Free expansion of a gas

B

Compression of air in a compressor

C

Expansion of steam in a turbine

D

All of the above

Which of the following non-flow reversible compression processes require maximum work?

A

Adiabatic process

B

Isothermal process

C

Isobaric process

D

All of the above

Which of the following cell has a reversible chemical reaction ?

A

Lead-acid

B

Mercury oxide

C

Carbon-zinc

D

Silver-oxide

Which of the following is reversible in action?

A

Motor generator set

B

Motor converter

C

Rotary converter

D

Any of the above

E

None of the above

Which of the following is not a reversible process ?

A

Expansion of an ideal gas against constant pressure

B

Atmospheric pressure vaporisation of water at 100°C

C

Solution of NaCl in water at 50°C

D

None of these

Which of the following is not reversible?

A

Joule effect

B

Peltier effect

C

Seebeck effect

D

Thomson effect

If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly

A

Temperature

B

Enthalpy

C

Internal energy

D

Entropy

Which of the following is a reversible non-flow process?

A

Isochoric process

B

Isobaric process

C

Hyperbolic process

D

All of these

Which of the following processes are thermodynamically reversible?

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