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.Management Sciences
A. is black in colour
B. reflects all heat
C. transmits all heat radiations
D. abslprbs heat radiations of all wave lengths falling on it
E. fully opaque
Related Mcqs:
- Which of the following is the case of heat transfer by radiation ___________________?
- A. blast furnace B. heating of building C. cooling of parts in furnace D. heat received by a person from fireplace E. all of the above...
- In heat transfer, conductance equals conductivity (kcal/hr/sqm/°C/cm) divided by ________________?
- A. hr (time) B. sqm (area) C. °C (temperature) D. cm (thickness) E. kcal (heat)....
- Heat conducted througfi unit area and unit thick face per unit time when temperature difference between opposite faces is unity,is called__________________?
- A. thermal resistance B. thermal coefficient C. temperature gradient D. thermal conductivity E. heat-transfer...
- Joule sec is the unit of_________________?
- A. universal gas constant B. kinematic viscosity C. thermal conductivity D. Planck’s constant E. none of the above...
- 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 E. radiation and convection...
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