Heat Transfer A body cools down from 75°C to 70°C in 10 minutes. It will cool down from 70° C to 65° C in __________ minutes. >10 Either B or C, depends on the mass of the body 10 >10 Either B or C, depends on the mass of the body 10 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be Equal to 45°C Initially decreases and remains constant thereafter More than 45°C Less than 45°C Equal to 45°C Initially decreases and remains constant thereafter More than 45°C Less than 45°C ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Presence of a non-condensing gas in a condensing vapour increases the rate of condensation decreases thermal resistance None of the listed here is desirable to increase the film co-efficient increases the rate of condensation decreases thermal resistance None of the listed here is desirable to increase the film co-efficient ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the highest thermal conductivity ? Silver Air Black Water Silver Air Black Water ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam traps are provided in steam carrying pipelines to release excess steam pressure by bleeding steam. none of the listed here remove condensate and inert gases condense steam release excess steam pressure by bleeding steam. none of the listed here remove condensate and inert gases condense steam ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Kirchoff's law is applicable to Only volumes and not to surfaces Monochromatic radiation only Total radiation only Both A and B Only volumes and not to surfaces Monochromatic radiation only Total radiation only Both A and B ANSWER DOWNLOAD EXAMIANS APP
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