Directly as
Inversely as square root of
Inversely as
As square of
✅ The correct answer is option A.
Chemical Engineering MCQs
Water hammer in a pipeline results from the
Bursting of pipelines due to closure by a valve
Rapid pressure change due to a rapid change in the rate of flow
Pressure increase due to closure of a valve resulting in decrease in rate of flow
None of these
✅ The correct answer is option B.
Hydraulic radius is the ratio of
Wetted perimeter to flow area
Flow area to wetted perimeter
Flow area to square of wetted perimeter
Square root of flow area to wetted perimeter
✅ The correct answer is option B.
A lubricant 100 times more viscous than water would have a viscosity (in Pa.s)
0.01
0.1
1
10
✅ The correct answer is option B.
In which of the following cases, it is possible for flow to occur from low pressure to high pressure?
Flow of liquid upward in a vertical pipe
Flow through a converging section
Flow of air downward in a pipe
Impossible in a constant cross-section conduit
✅ The correct answer is option B.
Euler’s equation of motion is a statement expressing
Conservation of mass
Conservation of energy
Newton’s first law of motion
Newton’s second law of motion
✅ The correct answer is option A.
Umf is the minimum fluidisation velocity for a bed of particles. An increase in the superficial gas velocity from 2 Umf to 2.5 Umf results in (all velocities are smaller than the entrainment velocity of the particles) no change in the
Drag on particles
Drag on coloumn walls
Bed height
Bed voidage
✅ The correct answer is option C.
In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature )
1/√T
1/T
√T
T
✅ The correct answer is option C.
The ratio of inertial forces to viscous forces is called the __________ number.
Weber
Mach
Froude
Reynold
✅ The correct answer is option D.
The momentum correction factor for the velocity distribution of laminar flow is
1.3
1.66
2.5
None of these
✅ The correct answer is option D.