Low thermal conductivity of heat insulating materials is due to its_______________?

Related Mcqs:

For what value of Prandtl number, St = f/2 ?

A. 1.5 B. 1 C. > 1 D. < 1...

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...

To reduce the tube side pressure drop for the same flow rate, the heat exchanger recommended is _______________?

A. 1-2 heat exchanger B. 1-1 heat exchanger C. 3-2 heat exchanger D. 2-4 heat exchanger...

Fqra cold viscous feed, backward feed gives _____________ than forward feed?

A. A higher capacity B. A lower capacity C. Lower economy D. None of these...

In the free convection regime of pool boiling, the heat flux is proportional to__________________?

A. Δt1/2 B. Δt2 C. Δt5/4 D. Δt...