Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 21 of 73)

Capacity of a rotary gear pump can be varied by__________________?
A. Changing the speed of rotation
B. Bleeding air into suction
C. Bypassing liquid from the suction or discharge line
D. All a., b. and c.
Drag co-efficient CD, in Stoke’s law range is given by________________?
A. Cd = 16/re.p
B. Cd = 24/re.p
C. Cd = 18.4/re.p
D. Cd = 0.079/re
Design of the casing of centrifugal pump should be such as to minimise the________________?
A. Back flow through impeller
B. Loss of kinetic head
C. Loss of static head
D. None of these
Quicksand is an example of a __________ fluid?
A. Bingham plastic
B. Dilatant
C. Newtonian
D. Pseudo plastic
Hot wire anemometer is used to measure the_________________?
A. Velocity of liquids
B. Temperature of liquids
C. Velocity of gases
D. Pressure of liquids