Thermodynamics

A. at atmospheric pressure
B. at a pressure below the firuosphejric pressure
C. at a pressure greater than atmospheric pressure
D. any pressure
E. not possible

A. heat
B. potential energy
C. surface tension
D. friction
E. increase in pressure

A. watts/°K
B. dynes/°C
C. ergscm/°K
D. erg/°K
E. none of the above

A. 760 mm Hg
B. zero mm Hg
C. 735.6 mm Hg
D. 1 mm Hg
E. lOOmmHg

A. 1 kgf/cnr2
B. 1.033 kgf/cm2
C. 0 kgf/cm2
D. 1.0197 kgf/cm2
E. 100 kgf/cm2

A. a thermodynamic machine
B. a non-thermodynamic machine
C. a hypothetical machine
D. a hypothetical machine whose opera-tion would violate the laws of thermodynamics
E. an inefficient machine

A. heat can’t be transferred from low temperature source to high temperature source
B. heat can be transferred for low temperature to high temperature source by using refrigeration cycle.
C. heat can be transferred from low temperature to high temperature source if COP of process is more than unity
D. heat can’t be transferred from low temperature to high temperature source without the aid of external energy
E. all of the above

A. carnot
B. Stirling
C. ericsson
D. all of the above
E. none of the above

A. working substance
B. design of engine
C. size of engine
D. type of fuel fired
E. temperatures of source and sink

A. gas engine
B. well lubricated engine
C. petrol engine
D. steam engine
E. reversible engine