Related Questions

The leaks in a refrigeration system using Freon are detected by
A Halide torch which on detection produces greenish flame lighting
B Sulphur sticks which on detection gives white smoke
C Using reagents
D Smelling
The leakage in a refrigeration system using Freon is detected by
A Halide torch
B Sulphur sticks
C Soap and water
D All of these
The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system
A Is as light as possible
B Has very high C.O.P
C Employs minimum quantity of refrigerant
D Consumer minimum horse power
Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.
A Unbound
B Free
C Critical
D Bound
The material of pipe lines for a system using Freon as a refrigerant should be
A Brass
B Copper
C Steel
D Aluminium
One Ton of Refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice---
A In 1 hour
B In 24 hour
C In 10 minutes
D In 12 hour
A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect?
A Vapor compression cycle using expansion valve
B Air refrigeration cycle
C Vapor compression cycle using expansion engine
D Carnot refrigeration cycle
Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is
A Positive
B Negative
C Zero
D Infinity
Freon group of refrigerants are
A Inflammable
B Toxic
C Non-inflammable and toxic
D Nontoxic and non-inflammable
The Freon group of refrigerants are
A Halocarbon refrigerants
B Zoetrope refrigerants
C Inorganic refrigerants
D Hydrocarbon refrigerants

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