Top 150+ Solved Thermal Engineering 1 MCQ Questions Answer

From 196 to 199 of 199

Q. Two plates spaced 150 mm apart are maintained at 1000°C and 70°C. The heat transfer will take place mainly by

a. convection

b. free convection

c. forced convection

d. radiation

  • d. radiation

Q. In regenerative type heat exchanger, heat transfer takes place by

a. direct mixing of hot and cold fluids

b. a complete separation between hot and cold fluids

c. flow of hot and cold fluids alternately over a surface

d. indirect tr

  • a. direct mixing of hot and cold fluids

Q. A perfect black body is one which

a. is black in colour

b. reflects all heat

c. transmits all heat radiations

d. absorbs heat radiations of all wave lengths falling on it

  • d. absorbs heat radiations of all wave lengths falling on it
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