Heat Transfer A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun? Black paint Yellow paint Grey paint White paint Black paint Yellow paint Grey paint White paint ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Intermittant tube cleaning is possible to be done in case of a __________ evaporator. Basket type Horizontal tube Calendria None of these Basket type Horizontal tube Calendria None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the right face is 10 W/m².K. At steady state, the temperature of the right face in °C is 48.7 77.2 63.8 71.2 48.7 77.2 63.8 71.2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Unsteady state heat conduction occurs, when Temperature distribution is dependent on time Temperature distribution is independent of time Heat flows in one direction only Three dimensional heat flow is concerned Temperature distribution is dependent on time Temperature distribution is independent of time Heat flows in one direction only Three dimensional heat flow is concerned ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The interchange factor for radiation heat transfer from surface 'x' to surface 'y' in case of an infinite parallel planes with emis-sivities εx & εy is given by (εx + εy)/(εx + εy - εx . εy) Εx . εy Εx + εy 1/εx + 1/εy (εx + εy)/(εx + εy - εx . εy) Εx . εy Εx + εy 1/εx + 1/εy ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Coal dust Aluminium foil Iron plates Refractory bricks Coal dust Aluminium foil Iron plates Refractory bricks ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS