The critical radius ‘r’ of insulation on a pipe is given by____________________?

Related Mcqs:

Which of the following is the most widely used heat insulating material for pipelines carrying steam ?

A. Tar dolomite bricks followed by asbestos B. Fireclay refractory followed by aluminium sheet C. Cotton followed by aluminium foil D. 85% magnesia cement and glass wool...

A sphere of radius ‘R1’ is enclosed in a sphere of radius ‘R2’. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is ________________?

A. 0 B. R2/(R1+R2) C. 1 D. (R1/R2)2...

Water is normally used as a coolant in the heat exchange equipments mainly because of its___________________?

A. Abundance & high heat capacity B. Low density C. Low viscosity D. High fluidity...

An ejector is used to__________________?

A. Increase pressure B. Increase temperature C. Remove condensate D. None of these...

Multiple effect evaporators are commonly used in the manufacture of P. Paper Q. Superphosphate R. Sugar S. Fats ?

A. P and Q B. P and R C. P and S D. R and S...