Heat and Mass Transfer Wien’s law states that the wave length corresponding to ________ is proportional to the absolute temperature. Both (A) and (B) Minimum energy Maximum energy None of these Both (A) and (B) Minimum energy Maximum energy None of these ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer In heat transfer, conductance equals conductivity (kcal/hr/sq.m/°C/cm) divided by Hr (time) K.cal (heat) Sq. m (area) °C (temperature) Hr (time) K.cal (heat) Sq. m (area) °C (temperature) ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer According to Prevost theory of heat exchange Heat transfer by radiation requires no medium All bodies above absolute zero emit radiation Heat transfer in most of the cases takes place by combination of conduction, convection and radiation It is impossible to transfer heat from low temperature source to t high temperature source Heat transfer by radiation requires no medium All bodies above absolute zero emit radiation Heat transfer in most of the cases takes place by combination of conduction, convection and radiation It is impossible to transfer heat from low temperature source to t high temperature source ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The use of heat exchangers is made in Radiators in automobile Condensers and boilers in steam plants All of these Condensers and evaporators in refrigeration and air conditioning units Radiators in automobile Condensers and boilers in steam plants All of these Condensers and evaporators in refrigeration and air conditioning units ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer The process of heat transfer from one particle of the body to another is called conduction, when the particles of the body Does not affect the intervening medium Do not move actually Move actually Affect the intervening medium Does not affect the intervening medium Do not move actually Move actually Affect the intervening medium ANSWER DOWNLOAD EXAMIANS APP
Heat and Mass Transfer Heat transfer by radiation mainly depends upon All of these Its temperature Kind and extent of its surface Nature of the body All of these Its temperature Kind and extent of its surface Nature of the body ANSWER DOWNLOAD EXAMIANS APP
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