Power requirement of fans having constant wheel diameter varies _____________ fan speed?

Related Mcqs:

Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will _____________ the gas discharge pressure?

A. Increase B. Decrease C. Not change D. Exponentially decrease...

In which of the following body shapes, the pressure drag is large compared to the friction drag ?

A. Stream line body B. Two dimensional body C. Bluff body D. None of these...

Mach number is the ratio of the speed of the _____________________?

A. Fluid to that of the light B. Light to that of the fluid C. Fluid to that of the sound D. Sound to that of the fluid...

If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is_________________?

A. Same in both the tubes B. Greater in 1 mm dia tube C. Greater in 0.5 mm dia tube D. Zero in both the tubes...

The distribution of shear stress in a stream of fluid in a circular tube is_____________________?

A. Linear with radius for turbulent flow only B. Linear with radius for laminar flow only C. Linear with radius for both laminar & turbulent flow D. Parabolic with radius for both laminar & turbulent flow...