The heat and work are mutually convertible. This statement is called ......law of thermodynamics.
The amount of heat required to raise the temperature of 1 kg of water through one kelvin in called
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A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called
In a quasi equilibrium process, the pressure in a system
The figure as shown below is the variation of the pressure of a gas with temperature (not volume) a given mass of an idea gas is subjected to various process starting from the state represented by point A. Which graph does an isochoric process represent
Which is usually the costliest item in a refrigeration system ?
COP of a domestic refrigerator in comparison to domestic air conditioner will be
When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by
The difference between dry bulb temperature ad wet bulb temperature, is called
In a petrol engine, the fuel supplied to the engine cylinder is mixed with required quantity of air and the mixture is ignited with a
In a four stroke cycle diesel engine, the exhaust valve
The probability of knocking in diesel engines is increased by
The nuclear radiators produced in a reactor which must be shielded are
In a SI engine very high compression ratio cannot be used because
The incomplete combustion is indicated by the presence of