Heat Transfer Choose the most important factor on which the heat conducted through a wall in a unit time will depend on? Area of the wall perpendicular to heat flow Material of the wall Temperature difference between the two surfaces of the wall Thickness of the wall Area of the wall perpendicular to heat flow Material of the wall Temperature difference between the two surfaces of the wall Thickness of the wall ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electro-magnetic spectrum range, which is important for radiation varies from __________ microns. 10 to 100 1 to 100 0.5 to 50 100 to 1000 10 to 100 1 to 100 0.5 to 50 100 to 1000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Low thermal conductivity of heat insulating materials is due to its Dense structure None of these High proportion of air space High specific heat Dense structure None of these High proportion of air space High specific heat ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low Suspended solids content Hardness All of these Dissolved soilds content Suspended solids content Hardness All of these Dissolved soilds content ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For a given ambient air temperature with increase in the thickness of insulation of a hot cylinderical pipe, the rate of heat loss from the surface would Increase Decrease First decrease and then increase First increase and then decrease Increase Decrease First decrease and then increase First increase and then decrease ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Aluminium foil Iron plates Refractory bricks Coal dust Aluminium foil Iron plates Refractory bricks Coal dust ANSWER DOWNLOAD EXAMIANS APP
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