Chemical Engineering Thermodynamics

Question: Efficiency of a Carnot engine working between temperatures T1 and T2 (T1 < T) is
[A].

[B].

[C].

[D].

Answer: Option A

Explanation:

No answer description available for this question.

Question: Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the
[A].

two temperatures only.

[B].

pressure of working fluid.

[C].

mass of the working fluid.

[D].

mass and pressure both of the working fluid.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Enthalpy ‘H’ is defined as
[A].

H = E – PV

[B].

H = F – TS

[C].

H – E = PV

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: In an adiabatic process, the
[A].

heat transfer is zero.

[B].

temperature change is zero.

[C].

work done is a path function.

[D].

enthalpy remains constant.

Answer: Option A

Explanation:

No answer description available for this question.

Question: An irreversible process
[A].

is the analog of linear frictionless motion in machines.

[B].

is an idealised visualisation of behaviour of a system.

[C].

yields the maximum amount of work.

[D].

yields an amount of work less than that of a reversible process.

Answer: Option D

Explanation:

No answer description available for this question.

Question: First law of thermodynamics deals with the
[A].

direction of energy transfer.

[B].

reversible processes only.

[C].

irreversible processes only.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: First law of thermodynamics is mathematically stated as
[A].

dQ = dE + dW

[B].

dQ = dE – dW

[C].

dE = dQ + dW

[D].

dW = dQ + dE

Answer: Option A

Explanation:

No answer description available for this question.