Chemical Engineering MCQs

6108 MCQs  (Page 415 of 611)

Velocity at a certain point in case of streamline flow is_________________?
A. Constant
B. Independent of time
C. Both a. & b.
D. Neither a. nor b.
The discharge co-efficient for an orifice meter does not depend upon the ___________________?
A. Pipe length
B. Ratio of pipe diameter to orifice diameter
C. Type of orifice & the reynolds number
D. Pipe diameter
For a specific centrifugal air blower operating at constant speed & capacity, the power requirement and pressure vary_______________?
A. Directly as square of gas density
B. Directly as gas density
C. Directly as square root of gas density
D. Inversely as gas density
Euler’s equation of motion states, that at every point, the_________________?
A. Fluid momentum is constant
B. Force per unit mass equals acceleration
C. Rate of mass outflow is equal to the rate of mass inflow
D. None of these
Steady flow occurs, when the__________________?
A. Conditions change steadily with time
B. Conditions are the same at the adjacent points at any instant
C. Conditions do not change with time at any point
D. Rate of the velocity change is constant
Euler’s equation of motion is a statement expressing____________________?
A. Conservation of mass
B. Conservation of energy
C. Newton’s first law of motion
D. Newton’s second law of motion
Two dimensional stream function________________?
A. Relates velocity and pressure
B. Is constant along a stream line
C. Is constant along an equipotential surface
D. None of these