Insulation in cavity walls is
A) Water
B) Air
C) Cork
D) Wood
E) None of the above
Correct Answer:
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Q29: Which of the following can be used
Q30: The surface temperature of the sun is
A)20000°K
B)2000°K
C)6000°K
D)Infinitely
Q31: What whould be shape of an ideal
Q32: Fouling factor
A)Measures the heat transfer efficiency
B)Is used
Q33: A dimensionless number representing the ratio of
Q35: Thermal conductivity of wood least depends on
A)Moisture
B)Density
C)Temperature
D)Grain
Q36: Heat is transferred from an insulated pipe
Q37: Dynamic similarity refers to the similarity of
A)37,500
Q38: A sphere 15 cm in diameter is
Q39: The net radiant interchange per square metre
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