Engineering Thermodynamics MCQs

Question 1

One barometric pressure or 1 atmospheric pressure is equal to

Accepted Answer

1.033 kgf/cm2

Answer

1 kgf/cm2

Answer

0 kgf/cm2

Answer

1.0197 kgf/cm2

Question 2

The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as

Accepted Answer

Atkinson cycle

Answer

Dual combustion cycle

Answer

Diesel cycle

Answer

Rankine cycle

Question 3

A heat exchange process in which the product of pressure and volume remains constant is known as

Accepted Answer

Hyperbolic process

Answer

Heat exchange process

Answer

Throttling process

Answer

Isentropic process

Question 4

Work done in an adiabatic process between a given pair of end states depends on

Accepted Answer

The end states only

Answer

Particular adiabatic process

Answer

The value of index ‘n’

Answer

The value of heat transferred

Question 5

Steam coal is a

Accepted Answer

Non-coking bituminous coal

Answer

Pulverized coal

Answer

Brown coal

Answer

Coking bituminous coal

Question 6

The increase in entropy of a system represents

Accepted Answer

Degradation of energy

Answer

Increase in availability of energy

Answer

Increase in temperature

Answer

Decrease in pressure

Question 7

The __________ is obtained when carbonization of coal is carried out at 500° to 700° C.

Accepted Answer

Soft coal

Answer

Hard coal

Answer

Pulverized coal

Answer

Bituminous coal

Question 8

When a gas is heated at constant volume

Accepted Answer

Both temperature and pressure will increase

Answer

Its temperature will increase

Answer

Its pressure will increase

Answer

Neither temperature nor pressure will increase

Question 9

In a reversible adiabatic process, the ratio of $$\frac{{{{	ext{T}}_1}}}{{{{	ext{T}}_2}}}$$ is equal to

Accepted Answer

$${\left( {\frac{{{{	ext{p}}_1}}}{{{{	ext{p}}_2}}}} ight)^{\gamma - \frac{1}{\gamma }}}$$

Answer

$${\left( {\frac{{{{	ext{p}}_2}}}{{{{	ext{p}}_1}}}} ight)^{\gamma - \frac{1}{\gamma }}}$$

Answer

$${\left( {\frac{{{{	ext{v}}_2}}}{{{{	ext{v}}_1}}}} ight)^{\gamma - \frac{1}{\gamma }}}$$

Answer

$${\left( {\frac{{{{	ext{v}}_1}}}{{{{	ext{v}}_2}}}} ight)^{\gamma - \frac{1}{\gamma }}}$$