Vapor compression refrigeration is some what like ____________________?
(A) Carnot cycle
(B) Rankine cycle
(C) reversed Camot cycle
(D) reversed Rankine cycle
(D) none of the above
An important characteristic of absorption system of refrigeration is__________________?
(A) noisy operation
(B) quiet operation
(C) cooling below 0°C
(D) very little power consumption
(D) its input only in the form of heating
In vapour compression cycle, the conditii of refrigerant is saturated liquid________________?
(A) after passing through the condenser
(B) before passing through the condensei
(C) after passing through the expansion throttle valve
(D) before entering the expansion valve
(D) before entering the compressor
In vapor compression cycle the condition off refrigerant is dry saturated 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
The moisture in a refrigerant is removed by___________________?
(A) evaporator
(B) safety relief valve
(C) dehumidifier
(D) driers
(D) expansion valve
The vapor compression refrigerator employs the following cycle_________________?
(A) Rankine
(B) Carnot
(C) Reversed Rankine
(D) Brayton
(D) Reversed Carnot
The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases ____________________ ?
(A) will be higher
(B) will be lower
(C) will remain unaffected
(D) may be higher or lower depending upon the nature of non-condensable gases
(D) unpredictable
Allowable pressure on high-pressure side or ammonia absorption system is of the order of_________________?
(A) atmospheric pressure
(B) slightly above atmospheric pressure
(C) 2-4 bars
(D) 5-6 bars
(D) 7-10 bars
In S.J. unit, one ton of refrigeration is equal to___________________?
(A) 210 kJ/min
(B) 21 kJ/min
(C) 420 kJ/min
(D) 840 kJ/min
(D) 105 kJ/min
The refrigerant for a refrigerator should have ___________________?
(A) high sensible heat
(B) high total heat
(C) high latent heat
(D) low latent heat
(D) low sensible heat