162. The ratio of specific heat at constant pressure (Cp) and specific heat at constant volume (cv) is
A.Equal to one
B.Less than one
C.Greater than one
D.None of these
163. Carbonisation of coal consists of
A.Drying and crushing the coal to fine powder
B.Moulding the finely ground coal under pressure with or without a binding material
C.Heating the wood with a limited supply of air to temperature not less than 280°K
D.None of the above
164. According to Gay-Lussac law for a perfect gas, P/T = constant, if V is kept constant
A.TRUE
B.FALSE
C.
D.
165. There is no change in internal energy in an iso-thermal process
A.Correct
B.Incorrect
C.
D.
166. If the value of n = 0 in the equation pvn = C, then the process is called
A.Constant volume process
B.Adiabatic process
C.Constant pressure process
D.Isothermal process
167. 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.
A.Atomisation
B.Carbonization
C.Combustion
D.None of these
168. Which of the following is correct?
A.Absolute pressure = Gauge pressure + atmospheric pressure
B.Gauge pressure = Absolute pressure + Atmospheric pressure
C.Atmospheric pressure = Absolute pressure + Gauge pressure
D.Absolute pressure = Gauge pressure - Atmospheric pressure
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