Heat Transfer The absorptivity of a grey body at a given temperature __________ with increasing wavelength of radiation. May increase or decrease ; depends on the material Remains constant Decreases Increases May increase or decrease ; depends on the material Remains constant Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Boiling point elevation of an ideal solution Increases rapidly with temperature rise In independent of pressure Decreases rapidly with temperature rise Both B and C Increases rapidly with temperature rise In independent of pressure Decreases rapidly with temperature rise Both B and C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is correct ? Rate = Resistance/Driving force Resistance = Driving force x Rate Rate = Driving force x Resistance Driving force = Rate x Resistance Rate = Resistance/Driving force Resistance = Driving force x Rate Rate = Driving force x Resistance Driving force = Rate x Resistance ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer __________ paint has the minimum absorption co-efficient. Black Grey Light cream White lead Black Grey Light cream White lead ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Grashoff number is defined as the ratio of the buoyancy to inertial forces buoyancy to viscous forces buoyancy to surface tension forces inertial to viscous forces. buoyancy to inertial forces buoyancy to viscous forces buoyancy to surface tension forces inertial to viscous forces. ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in the distance between the heat source and the object receiving the heat, the radiation heat transfer Increases Decreases Remains unaffected Increases exponentially Increases Decreases Remains unaffected Increases exponentially ANSWER DOWNLOAD EXAMIANS APP