Q.1
Charles' law states that all perfect gases change in volume by __________ of its original volume at 0°C for every 1°C change in temperature, when pressure remains constant.
Q.2
When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting fuel is
Q.3
In an extensive property of a thermodynamic system
Q.4
The more effective way of increasing efficiency of Carnot engine is to
Q.5
The area under the temperature-entropy curve (T – s curve) of any thermodynamic process represents
Q.6
For same compression ratio and for same heat added
Q.7
The natural solid fuel is
Q.8
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)
Q.9
The efficiency of a gas turbine is given by
Q.10
One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.
Q.11
The area under the temperature-entropy curve (T - s curve) of any thermodynamic process represents
Q.12
The main cause for the irreversibility is
Q.13
The isothermal and adiabatic processes are regarded as
Q.14
An adiabatic process is one in which
Q.15
Isochoric process is one in which
Q.16
If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called
Q.17
The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)
Q.18
The heat supplied to the gas at constant volume is (where m = Mass of gas, cv = Specific heat at constant volume, cp = Specific heat at constant pressure, T2 - T1 = Rise in temperature, and R = Gas constant)
Q.19
Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant)
Q.20
Those substances which have so far not been resolved by any means into other substances of simpler form are called
Q.21
The efficiency of Carnot cycle depends upon
Q.22
One kg of hydrogen requires 8 kg of oxygen and produces
Q.23
One kg of carbon monoxide requires 4/7 kg of oxygen and produces
Q.24
In a free expansion process,
Q.25
The efficiency of the Carnot cycle may be increased by
Q.26
Carnot cycle efficiency is maximum when
Q.27
An adiabatic wall is one which
Q.28
The efficiency of Diesel cycle depends upon
Q.29
The work ratio of simple gas turbine cycle depends upon
Q.30
The polytropic index (n) is given by
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