Q.1
An actual engine is to be designed having same efficiency as the Carnot cycle. Such a proposition is
Q.2
The absolute zero pressure can be attained at a temperature of
Q.3
Molecular volume of any perfect gas at 600 × 103 N/m² and 27°C will be
Q.4
If value of n is infinitely large in a polytropic process pVn = C, then the process is known as constant
Q.5
The unit of universal gas constant is
Q.6
In S. I. units, the value of the universal gas constant is
Q.7
General gas equation is
Q.8
Petrol is distilled at
Q.9
The volumetric or molar specific heat at constant pressure is the product of
Q.10
In a Carnot cycle, heat is transferred at
Q.11
The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained in a unit volume of gas.
Q.12
For which of the following substances, the gas laws can be used with minimum error
Q.13
The condition for the reversibility of a cycle is
Q.14
The value of gas constant (R) in S. I. units is
Q.15
In an ideal gas turbine plant, it is assumed that the compression and expansion processes are
Q.16
The hard coke is obtained when carbonization of coal is carried out at
Q.17
The first law of thermodynamics is the law of
Q.18
Stirling and Ericsson cycles are
Q.19
The unit of energy is S. I. units is
Q.20
The universal gas constant (or molar constant) of a gas is the product of
Q.21
The behavior of super-heated vapour is similar to that of
Q.22
Which of the following has the minimum atomic mass?
Q.23
Heat and work are
Q.24
The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is
Q.25
A sudden fall in the barometer reading is a sign of approaching
Q.26
If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly
Q.27
During throttling process
Q.28
Universal gas constant is defined as equal to product of the molecular weight of the gas and
Q.29
The index of compression ‘n’ tends to reach ratio of specific heats ‘y’ when
Q.30
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is
0 h : 0 m : 1 s