Category: Thermodynamics

A. work done by a system is equal to heat transferred by the system
B. total internal energy of a system during a process remains constant
C. internal energy, enthalpy and entropy during a process remain constant
D. total energy of a system remains constant
E. entropy of a system remains constant

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

A. Avogadro’s hypothesis
B. Dalton’s law
C. Gas law
D. Law of thermodynamics
E. Joule’s law

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

A. isothermal
B. adiabatic
C. throttling
D. all of the above
E. none of the above

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. mass and energy are mutually convertible
B. Carnot engine is most efficient
C. heat and work are mutually convertible
D. mass and light are mutually convertible
E. heat flows from hot substance to cold substance

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

A. Boyle’s law
B. Charles’law
C. Gay-Lussac law
D. all of the above
E. Joule’s law

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