A body is called grey if the monochromatic emissivity of the body is___________________?

Related Mcqs:

With increase in temperature, the total emissivity of conductors____________________?

A. Increases B. Decreases C. Remain same D. Decreases linearly...

Solid angle subtended by the finite surface at the radiating element is_________________?

A. Called the view factor B. Called the angle of vision C. Proportional to the square of the distance between surfaces D. Expressed in terms of radians...

In forced convection, the Nusselt number is a function of ____________________?

A. Re and Pr B. Re and Gr C. Pr and Gr D. Re and Sc...

Multipass heat exchangers are used______________________?

A. Because of simplicity of fabrication B. For low heat load C. To obtain higher heat transfer co-efficient and shorter tube D. To reduce the pressure drop...

In Fourier’s law, the proportionality constant is called the______________________?

A. Heat transfer co-efficient B. Thermal diffusivity C. Thermal conductivity D. Stefan-Boltzmann constant...