Heat Transfer 1 BTU/hr.ft.°F is equal to __________ kcal/hr. m.°C. 1.49 None of these 4.88 1 1.49 None of these 4.88 1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. 3 x l08 3 x l05 3 x l010 3 x l012 3 x l08 3 x l05 3 x l010 3 x l012 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Finned tube heat exchangers facilitate very large temperature drop through tube wall are used for smaller heat load give larger area per tube use metal fins of low thermal conductivity facilitate very large temperature drop through tube wall are used for smaller heat load give larger area per tube use metal fins of low thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The main purpose of providing fins on heat transfer surface is to increase the Heat transfer area Heat transfer co-efficient Mechanical strength of the equipment Temperature gradient Heat transfer area Heat transfer co-efficient Mechanical strength of the equipment Temperature gradient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer At constant temperature, the thermal conductivities of gases __________ with rise in pressure. Decrease Remain unchanged Increase May increase or decrease; depends on the pressure Decrease Remain unchanged Increase May increase or decrease; depends on the pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The film thickness for laminar film condensation on vertical surface __________ from top to bottom. Cummulatively increases Remains constant And the surface conductance increase Cummulatively decreases Cummulatively increases Remains constant And the surface conductance increase Cummulatively decreases ANSWER DOWNLOAD EXAMIANS APP
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