Heat Transfer Forced circulation evaporators are normally used for concentrating liquids having Scaling characteristics Both A & B Neither A nor B High viscosity Scaling characteristics Both A & B Neither A nor B High viscosity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant are interchanged, then the rate of condensation will Either increase or decrease; depends on the coolant flow rate Decrease Increase Remain unchanged Either increase or decrease; depends on the coolant flow rate Decrease Increase Remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately 37 50 32 45 37 50 32 45 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is not used as a medium for high temperature heating ? dowtherm liquid metal None of the listed here mercury dowtherm liquid metal None of the listed here mercury ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A cube, sphere & a thin circular plate (all having same mass and made of same material) are all heated to 300°C and allowed to cool in natural air. Which one will cool the slowest ? Plate All of these Cube Sphere Plate All of these Cube Sphere ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by Roughening the surface Painting the surface black Painting the surface white (with aluminium paint) Giving the surface a mirror finish Roughening the surface Painting the surface black Painting the surface white (with aluminium paint) Giving the surface a mirror finish ANSWER DOWNLOAD EXAMIANS APP
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