Heat Transfer In a shell and tube heat exchanger, The relationship is not generalised The temperature drop is inversely proportional to the resistance across which the drop occurs The temperature drops in the two fluids and the wall are proportional to individual resistances There is no relationship between temperature drop and resistance The relationship is not generalised The temperature drop is inversely proportional to the resistance across which the drop occurs The temperature drops in the two fluids and the wall are proportional to individual resistances There is no relationship between temperature drop and resistance ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Nucleate boiling is promoted In the absence of agitation None of these On rough surfaces On polished surfaces In the absence of agitation None of these On rough surfaces On polished surfaces ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The advantage of backward feed multiple effect evaporators over forward feed units is that Equal heat transfer co-efficients exist in various effects Heat sensitive material can be handled There is no additional cost of pumping Most concentrated liquid is at highest temperature Equal heat transfer co-efficients exist in various effects Heat sensitive material can be handled There is no additional cost of pumping Most concentrated liquid is at highest temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change in temperature is the smallest for Cube Sphere Cylinder Equal for all the three Cube Sphere Cylinder Equal for all the three ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Solid angle subtended by the finite surface at the radiating element is expressed in terms of radians called the angle of vision proportional to the square of the distance between surfaces called the view factor. expressed in terms of radians called the angle of vision proportional to the square of the distance between surfaces called the view factor. ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The purpose of floating head in a heat exchanger is to Decrease the pressure drop Facilitate its lengthening, if needed Provide support for tubes Avoid buckling of tubes Decrease the pressure drop Facilitate its lengthening, if needed Provide support for tubes Avoid buckling of tubes ANSWER DOWNLOAD EXAMIANS APP
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