Heat Transfer The range of electromagnetic spectrum important in heat transfer by radiation is __________ microns. 0.5-50 100-1000 5-50 0.38-0.78 0.5-50 100-1000 5-50 0.38-0.78 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is 1 Zero <1 >1 1 Zero <1 >1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as Ha = 2hL Ha = 0.8hL Ha = hL Ha= 5hL Ha = 2hL Ha = 0.8hL Ha = hL Ha= 5hL ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The purpose of providing expansion bellows in the shell of tubular exchanger is to Impart structural strength Account for the uneven expansion of shell and tube bundles Facilitate increase of shell length, if needed Increase the heating load Impart structural strength Account for the uneven expansion of shell and tube bundles Facilitate increase of shell length, if needed Increase the heating load ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is Parallel flow with process stream on shell side Counter flow with process stream on tube side Parallel flow with process stream on tube side Counter flow with process stream on shell side Parallel flow with process stream on shell side Counter flow with process stream on tube side Parallel flow with process stream on tube side Counter flow with process stream on shell side ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be 0.85 0.55 0.35 0.45 0.85 0.55 0.35 0.45 ANSWER DOWNLOAD EXAMIANS APP
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