Related Questions

The desirable property of a refrigerant is
A Low boiling point
B High critical temperature
C High latent heat of vaporisation
D All of these
The undesirable property of a refrigerant is
A Non-toxic
B Non-flammable
C Non-explosive
D High boiling point
High __________ is an undesirable property for a good refrigerant.
A Specific heat
B Latent heat of vaporisation
C Viscosity
D Specific vapor volume
Pick out the undesirable property for a good refrigerant.
A High thermal conductivity
B Low freezing point
C Large latent heat of vaporisation
D High viscosity
Which of the following property is not necessarily desirable in the material for transformer core?
A Mechanical strength
B Low hysteresis loss
C High thermal conductivity
D High permeability
Which of the following property is desirable for materials used in tools and machines?
A Elasticity
B Plasticity
C Ductility
D Malleability
Which of the following property is desirable in parts subjected to shock and impact loads?
A Strength
B Stiffness
C Brittleness
D Toughness
Which of the following is not a common refrigerant?
A Freon-12
B Ethylene
C Ammonia
D Carbon dioxide
Which is not a refrigerant?
A SO2
B NH3
C CCl2F2
D C2H4Cl2
which of the following refrigerant has the lowest freezing point?
A Freon -11
B Freon -12
C Freon -22
D Ammonia

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