A. heat exchange does not take place
B. no work is done by expanding steam
C. there is no change of internal energy of steam
D. all of the above
E. entropy decreases
Related Mcqs:
- In a free expansion process___________________?
A. work done is zero
B. heat transfer is zero
C. both A. and B. above
D. work done is zero but heat increases
E. work done is zero but heat decreases - Which of the following processes is irreversible process___________________?
A. isothermal
B. adiabatic
C. throttling
D. all of the above
E. none of the above - A gas is compressed in a cylinder by a movable piston to a volume one-half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be___________________?
A. 300 Nm
B. 300,000 Nm
C. 30 Nm
D. 3000 Nm
E. 30,000 Nm - The same volume of all gases would represent their____________________?
A. densities
B. specific weights
C. molecular weights
D. gas characteristic constants
E. specific gravities - Change in enthalpy of a system is the heat supplied at___________________?
A. constant pressure
B. constant temperature
C. constant volume
D. constant entropy
E. N.T.P. condition - Total heat of a substance is also known as __________________?
A. internal energy
B. entropy
C. thermal capacity
D. enthalpy
E. thermal conductance - Kelvin Planck’s law deals with___________________?
A. conservation of heat
B. conservation of work
C. conversion of heat into work
D. conversion fo work into heat
E. conservation of mass - Diesel cycle consists of following four processes_________________?
A. two isothermals and two isentropics
B. two isentropics, and two constant volumes.
C. two isentropics, one constant volume and one constant pressure
D. two isentropics and two constant pressures
E. none of the above - The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is______________________?
A. 29.27 kgfm/mol°K
B. 8314kgfm/mol°K
C. 848kgfm/mol°K
D. 427kgfm/mol°K
E. 735 kgfm/mol°K - General gas equation is____________________?
A. PV=nRT
B. PV=mRT
D. PV = C
C. PV=KiRT
E. Cp-Cv = Wj
