In which of the following energy conversion takes place at ambient temperature?
A.Magnetohydrodynamic conversion
B.Thermionic generator
C.Battery producing electrical energy
D.Solar radiation
A.Magnetohydrodynamic conversion
B.Thermionic generator
C.Battery producing electrical energy
D.Solar radiation
A.Conduction heat flow only
B.Convective heat flow only
C.Radiation heat flow only
D.Heat exchange by all the three modes of heat transfer
E.No heat exchange
A.Temperature, specific heats and pressure
B.Temperature, specific heats and enthalpy
C.Temperature, specific heats and entropy
D.Temperature and specific heats
E.Temperature only
A.Zero
B.positive
C.Negative
A.Two
B.Three
C.Four
D.Five
E.Six
A.Olefins
B.Paraffins
C.Naphthenes
D.Aromatics
A.For all types of continuous flow
B.Only for rotational flow
C.Only for irrotational flow
D.Only for laminar flow
E.Only for unidirectional flow
A.The body through which heat flow is in motion
B.The source of heat is in motion
C.The heat flow changes with change in temperature
D.The heat flow changes with time
E.None of the above
A.Carnot cycle
B.Stirling cycle
C.Ericsson cycle
D.Otto cycle
E.All of the above