Test: Thermodynamics- 2


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25 Questions MCQ Test Mechanical Engineering SSC JE (Technical) | Test: Thermodynamics- 2

Test: Thermodynamics- 2 for Mechanical Engineering 2022 is part of Mechanical Engineering SSC JE (Technical) preparation. The Test: Thermodynamics- 2 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Thermodynamics- 2 MCQs are made for Mechanical Engineering 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Thermodynamics- 2 below.
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Test: Thermodynamics- 2 - Question 1

At critical point enthalpy of vaporizations is

Test: Thermodynamics- 2 - Question 2

A carnot engine is made to work on amonoatomic gas first (g = 1.67) and then on adia atomic gas (g = 1.4). Among the two whichwill have better efficiency

Test: Thermodynamics- 2 - Question 3

Two carnot engine are in series operatingbetween source temperature of 180º C and 20ºCsink temperature. If both produce equal amountof work the intermediated temperature is.

Test: Thermodynamics- 2 - Question 4

Which law of thermodynamics predicts the degree of completion of chemical reactions.

Test: Thermodynamics- 2 - Question 5

Entropy of the universe

Test: Thermodynamics- 2 - Question 6

Isentropic flow is always
1. zero increase in entropy flow.
2. revertrible adiabatic flow.
3. Frictionless reversible flow.

Detailed Solution for Test: Thermodynamics- 2 - Question 6

In fluid dynamics, an isentropic flow is a fluid flow that is both adiabatic and reversible. That is, no heat is added to the flow, and no energy transformations occur due to friction or dissipative effects. For an isentropic flow, entropy density can vary between different streamlines.

Test: Thermodynamics- 2 - Question 7

If the entropy of a system increases it means.

Test: Thermodynamics- 2 - Question 8

The energy of an isolated system is

Test: Thermodynamics- 2 - Question 9

Joule thomson coefficient is the slope of constantenthalpy lines in

Test: Thermodynamics- 2 - Question 10

With increase of pressure latent heat of steam

Test: Thermodynamics- 2 - Question 11

For a pure substance, the degree of freedom forsaturated vapour and superheated vapour are

Test: Thermodynamics- 2 - Question 12

At tripple point of water which of the followingcan be found.

Test: Thermodynamics- 2 - Question 13

The term which can differentiate thermodynamics from other sciences is ____.

Test: Thermodynamics- 2 - Question 14

When water is heated from 0º C its specificvolume will,

Test: Thermodynamics- 2 - Question 15

Which of the following is a pure substance
i. Gaseous combustion product
ii. Dry air
iii. Moist Air

Test: Thermodynamics- 2 - Question 16

During boiling vapour pressure is _______ toatmospheric pressure.

Test: Thermodynamics- 2 - Question 17

Change of state ex. freezing, melting, evaporationetc. are

Test: Thermodynamics- 2 - Question 18

First law of thermodynamics provides

Test: Thermodynamics- 2 - Question 19

A vessel of volume 1m3 contains oxygen(molecular weight = 32) at P = 1 bar and T = 47º C. The mass of oxygen in vessel is [R = 8314 J/mol-k]

Test: Thermodynamics- 2 - Question 20

As temperature increases values of Cp, Cv and g for polyatomic gas

Test: Thermodynamics- 2 - Question 21

For a free expansion process work done is

Test: Thermodynamics- 2 - Question 22

The heat transfer in a polytropic process can be given as.

Test: Thermodynamics- 2 - Question 23

The cyclic integral of (dQ - dw) is

Test: Thermodynamics- 2 - Question 24

The unit of temperature in S.I. units is

Test: Thermodynamics- 2 - Question 25

Which of the following is an extensive property.

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