## Engineering Thermodynamics The efficiency of Carnot cycle is maximum for

Petrol engine
Steam engine
Gas engine
Reversible engine

## Engineering Thermodynamics The throttling process is __________ process.

Reversible
None of these
Irreversible
Reversible or irreversible

## Engineering Thermodynamics The total energy of a molecule is shared equally by the various degrees of freedom possessed by it. This law is known as

None of the listed here
Law of conservation of energy
Law of equipartition of energy

Volume
Density
Temperature
Pressure

## Engineering Thermodynamics According to Kelvin-Planck’s statement of second law of thermodynamics,

It is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work
It is possible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work
None of these

## Engineering Thermodynamics The general gas energy equation is (where Q1 - 2 = Heat supplied, dU = Change in internal energy, and W1 - 2 = Work done in heat units)

Q1 - 2 = dU - W1 - 2
Q1 - 2 = dU/W1 - 2
Q1 - 2 = dU × W1 - 2
Q1 - 2 = dU + W1 - 2