2:-134 8
B:-Freon-22
C:-Freon-11
D:-None of these
Correct Answer:- Option-A
Question49:-Secondary Refrigerant is useful because
A:-ltis cheap
B:-Easily available
C:-It reduces the primary Refrigerant Piping
D:-None of these
Correct Answer:- Option-C
Question50:-In Split air conditioners the following condenser is used
A:-Forced convection air cooled
B:-Natural Convection air cooled
C:-Water cooled
D:-Evaporative type
Correct Answer:- Option-A
Question51:-When is the Vacuum Pump used in refrigeration system 7
A:-After gas charging
B:-Before gas charging
C:-Before leak amesting
D:-Before oil charging
Correct Answer:- Option-B
Question52:-For easy bending and Flaring we use
A:-Annealed copper tube
B:-Plastic tube
C:-Brass tube
D:-M. S. tube
Correct Answer:- Option-A
Question53:-The Refrigerant for a Refrigerator should have
A:-High sensible heat
B:-Low latent heat
C:-High latent heat
D:-Low sensible heat
Correct Answer:- Option-C
Question54:-Most of the domestic Refrigerators work णो the following Refrigeration system
A:-Vapour Compression System
B:-Vapour Absorption System
C:-Thermo Electric System
D:-Air Compression System
Correct Answer:- Option-A
Question55:-The dry bulb temperature and wet bulb temperature becomes equal at % RH.
A:-100%
B:-90%
C:-50%
D:-None of these
Correct Answer:- Option-A
Question56:-The chemical formula of R. 22 refrigerant is
கல
B:-*CHCIF_(2)"
೧೮೦೬೯ 0):
D:-CHCL (2)F_(2)°
Correct Answer:- Option-B
Question57:-Halide torch is used for Refrigerants.
A:-Detect Leak of *NH_(3)"
B:-Detect leak of *CO_(2)"
C:-Detect leak of ടന group
D:-None of these
Correct Answer:- Option-C