In vapor compression cycle, the condition of refrigerant is high pressure saturated liquid________________?
(A) after passing through the condenser
(B) before passing through the condenser
(C) after passing through the expansion or thiottle valve
(D) before entering the expansion valve
(D) before entering the compressor
Clapeyron equation is a relation between___________________?
(A) temperature, pressure and enthalpy
(B) specific volume and enthalpy
(C) temperature and enthalpy
(D) temperature, pressure, and specil volume
(D) temperature, pressure, specific volur and’enthalpy
A refrigerant should have _____________________?
(A) Tow specific heat of liquid
(B) high boiling point
(C) high latent heat of vaporisation
(D) higher critical temperature
(D) low specific volume of vapour
In vapor compression cycle, the condition of refrigerant is very wet vapor________________?
(A) after passing through the condenser
(B) before passing through the condenser
(C) after passing through the expansion or throttle valve
(D) before entering the expansion valve
(D) before entering the compressor
Clapeyron equation is applicable for registration at___________________?
(A) saturation point of vapor
(B) saturation point of liquid
(C) sublimation temperature
(D) triple point
(D) critical point
The relative coefficient of performance is_____________________?
(A) actual COP/fheoretical COP
(B) theoretical COP/actual COP
(C) actual COP x theoretical COP
(D) 1-actual COP x theoretical COP
(D) 1-actual COP/fheoretical COP.
Which of the following cycles uses air as the refrigerant__________________?
(A) Ericsson
(B) Stirling
(C) Carnot
(D) Bell-coleman
(D) none of the above
Two coplanar couples having equal and opposite moments_________________?
(A) balance each other
(B) produce a couple and an unbalanced force
(C) are equivalent
(D) produce a moment of couple
(D) can not balance each other
Frictional force encountered after commencement of motion is called ___________________?
(A) post friction
(B) limiting friction
(C) kinematic friction
(D) frictional resistance
(D) dynamic friction
Ammonia-absorption refrigeration cycle requires__________________?
(A) very little work input
(B) maximum work input
(C) nearly same work input as for vapour compression cycle
(D) zero work input
(D) none of the above