A non-dimensional number generally associated with natural convection heat transfer is________________?

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...

Heat transfer by radiation mainly depends upon___________________?

A. its temperature B. nature of the body C. kind and extent of its surface D. all of the above E. none of the above...

In counter flow heat exchangers_________________?

A. both the fluids at inlet (of heat ex¬changer where hot fluid enters) are in their coldest state B. both the fluids at inlet are in their hot¬test state C. both the fluids .at exit are in their hottest state D. one fluid is in hottest state and other in coldest state at inlet E. … In counter flow heat exchangers_________________?Read More...

The unit of Stefan Boltzmann constant is ____________________?

A. watt/cm2 °K B. watt/cm4 °K C. watt2/cm °K4 D. watt/cm2 °K4 E. watt/cm2 °K2...

Depending on the radiating properties, a body will be opaque when _________________?

A. p = 0, x = 0 and a = 1 B. p=l,x = 0anda = 0 C. p = 0, x = 1 and a = 0 D. x – 0, a + p = 1 E. a=0,x + p= 1. where a = absorptivity, p = reflectivity, X = transmissivity...