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This mock test of Test: Thermodynamic Relations - 2 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam.
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QUESTION: 1

Joule Thomson coefficient (μ) is given by

Solution:

Joule Thomson coefficient

QUESTION: 2

Gibb's free energy (G) is given by

Solution:

Gibb’s free energy (G ) = H - TS

QUESTION: 3

Helmholtz function (F) is given by

Solution:

Helmholtz function F = U - TS

QUESTION: 4

Which one of the following expression is true for Tds equal to

Solution:

Tds = du+ PdV— First Tds equation .

Tds - dh- VdP— Second Tds eauation

QUESTION: 5

Gibb’s free-energy functions is a property comprises

Solution:

Gibbs free energy function (G)

G = H - TS = f(H, T, S)

QUESTION: 6

The specific heat at constant pressure (C_{p}) is given by

Solution:

From TdS equation

TdS = dh - VdP

for constant pressure process

dP= 0

Since dh = c_{p}dT

TdS = C_{p}dT

QUESTION: 7

For real gases C_{p }= C_{v }at

Solution:

QUESTION: 8

The Ciausius-clapeyron equation gives the slope of a curve in

Solution:

QUESTION: 9

Rate of change of enthalpy with respect to entropy at constant pressure for a perfect gas

Solution:

QUESTION: 10

The number of components (C), Phases (P) and degree of freedom (F) are related by Gibb’s phase rule as

Solution:

Gibb’s phase rule is given b

C + 2 = P + F

P + F - C - 2 = 0

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