Fluid Mechanics - Chemical Engineering Questions and Answers

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

In case of venturimeters, friction losses are about __________ percent of maximum velocity head.

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

Erosion and pits formation on the impeller of a centrifugal pump may be due to

Cavitation

Low speed of impeller

Its operation with delivery valve closed for considerable time after starting the pump

Off centering of pump with motor

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

Check in a centrifugal pump is

Provided in the discharge line

Generally a globe valve

Provided to prevent liquid from backing up through the pump when the pump is turned off or accidently stops running

All of the above

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

Check valves are used

At high pressure

In bends

For controlling water flow

For unidirectional flow

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

Nominal Pipe Size (NPS) of a pipe less than 12 inches in diameter indicates its

Inner diameter

Outer diameter

Thickness

Neither inner nor outer diameter

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

Experimental study of laminar fluid flow through a circular tube was conducted by

Reynolds

Hagen and Poiseuille

Pascal

Blake-Plummer

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

Centrifugal pump is normally classified on the basis of the

Rpm

Type of casing

Impeller blade angle

Number of blades in impeller

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

The ratio of the wall drag to the form drag in the Stoke's law range (for motion of spherical particles in a stationary fluid) is

0.5

0.33

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL
Share as Image
As Image

Cocks are used to control

Water

Any liquid

Solids

None of these