Chemical Engineering MCQs

6108 MCQs  (Page 395 of 611)

Centrifugal compressors compared to reciprocating compressors__________________?
A. Require less space
B. Have quieter operation
C. Have lower operating costs
D. All a., b. and c.
A fluid element has a velocity V = -y2. xi + 2yx2 . j. The motion at (x, y) = (1/√2, 1) is_________________?
A. Rotational and incompressible
B. Rotational and compressible
C. Irrotational and compressible
D. Irrotational and incompressible
The head developed by a centrifugal pump is largely determined by the____________________?
A. Power of the pump
B. Nature of the liquid being pumped
C. Angle of the vanes and the speed of the tip of the impeller
D. Vapour pressure of the liquid
Priming is needed in a ______________ pump?
A. Reciprocating
B. Gear
C. Centrifugal
D. Diaphragm
Power required for mixing Newtonian fluids is a function of the _________________?
A. Speed of impeller, diameter of impeller & viscosity
B. Density & viscosity of fluid only
C. Density of fluid, viscosity of fluid & impeller dia only
D. None of these