B:To facilitate dumping
C-70 improve appearance
D-All of the above
Correct Answer:- Option ®
Question67::What is the gas used in ice plants ?
Ac Nitrogen
படப்‌
CeLaughing gas
D-All of the above
Correct Answer:- Option ®
Question68:-The most common insulating material used in deep freezer is
ക
B:-Thermocool
(तन
D-Glass wool
Correct Answer:- Option-é
Question69:-Which type of evaporator is used in household refrigerators 7
‘Acfrosting evaporator
B:-Defrosting evaporator
C:-Non-frosting evaporator
D-Non-corrosive evaporator
Correct Answer:- Option-é
Question70::What is Air Condititiong ?
‘Acir conditioning is the process of adding heat and increasing the humidity
B:-Air conditioning is the process of removing heat and controlling the humidity of air in a closed space
CCAir conditioning is the process of controling air moisture in an open area by adding heat
D-None of the mentioned
Correct Answer:-Question Cancelled
Question71::Which of the following is not a factor affecting the capacity of evaporator ?
AcNelacity of refrigerant
B:-Thickness of the evaporator coil wall
2
D Evaporator pressure
Correct Answer:- Option-D
Question72:-The grill of an air conditioner should be washed with
‘ACarbon tetrachloride
B:-Petrol
C-Soap solution
D:-Hydrochloric acid
Correct Answer:- Option-C
Question73::Which arrangement avoids cooling water overfiow in storage type water cooler ?
‘AcBubbler
B:-Faucet
CoFloat
‏دہ‎
‎Correct Answer:- Option-C
Question74:-Ina vapour compression cycle the condition of refrigerant is saturated liquid
‏الهم‎ passing through the condenser
B:-Before passing through the condenser

CcAfter passing through the expansion throttle valve