Mechanical Engineering Thermodynamics Online Test Series

All the commercial liquid fuels are derived from natural petroleum (or crude oil).

A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as

The efficiency and work ratio of a simple gas turbine cycle are

The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called

There is a loss of heat in an irreversible process.

An adiabatic process is one in which

Water gas is obtained by passing air and a large amount of steam over waste coal at about 650°C.

When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.

Which of the following is the lightest and most volatile liquid fuel?

The processes occuring in open system which permit the transfer of mass to and from the system, are known as

Which of the following has the minimum atomic mass?

Workdone in a free expansion process is

The pressure exerted by an ideal gas is __________ of the kinetic energy of all the molecules contained in a unit volume of gas.

The compression ratio for petrol engines is

The efficiency of Diesel cycle approaches to Otto cycle efficiency when

The entropy __________ in an irreversible cyclic process.

The atomic mass of oxygen is

Carbonisation of coal consists of

The efficiency of Stirling cycle is __________ Carnot cycle.

According to Gay-Lussac law for a perfect gas, p/T = constant, if v is kept constant.

There is no change in internal energy in an isothermal process.

The value of specific heat at constant pressure (cp) is __________ that of at constant volume (cv).

When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel, the process is known as __________ of fuel.

Which of the following is correct?

The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and recondensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called

Which of the following statement is incorrect?

Which of the following gas is mostly used in town for street and domestic lighting and heating?

The value of gas constant (R) in S. I. units is

In the first law of thermodynamics, the total energy of the system remains constant.

The efficiency of Diesel cycle increases with