Venturimeter
Pressure gauge
Pitot tube
Orificemeter
✅ The correct answer is option C.
Chemical Engineering MCQs
Power required by a centrifugal pump is proportional to (where, D = diameter, N = r.p.m)
N²D³
ND²
N²D
N³D⁵
✅ The correct answer is option D.
For an ideal fluid flow, Reynolds number is
2100
100
0
∞
✅ The correct answer is option D.
A centrifugal pump used to pump water is used to pump an oil with specific gravity of 0.8 at the same rate. The power consumption will now
Increase
Decrease
Remain same
Data insufficient to predict
✅ The correct answer is option B.
The pressure intensity is the same in all directions at a point in a fluid
Only when the fluid is frictionless
Only when the fluid is at rest having zero velocity
When there is no motion of one fluid layer relative to an adjacent layer
Regardless of the motion of one fluid layer relative to an adjacent layer
✅ The correct answer is option C.
In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as :(where, ‘δ’ is the boundary layer thickness and ‘x’ is the distance from the leading edge in the direction of flow).
Re
√Re
1/Re
Re-1/2
✅ The correct answer is option D.
Prandtl mixing length is
Applicable to laminar flow problems
A universal constant
Zero at the pipe wall
None of these
✅ The correct answer is option C.
What is the unit of kinematic viscosity in SI unit?
m²/sec
N/m² . sec
Kg . sec/m
None of these
✅ The correct answer is option A.
Pick out the correct statement pertaining to venturimeter.
A venturimeter with a fixed pressure drop discharges more, when the flow is vertically downward, than when the flow is vertically upward
The co-efficient of contraction of a venturimeter is always unity
For a fixed pressure drop, the discharge of a gas through a venturimeter is greater, when compressibility is taken into account, than when it is neglected
None of these
✅ The correct answer is option D.
Multistage centrifugal pumps are generally used for
High head
Low head but high discharge
Highly viscous liquid
Slurries of high solid concentration
✅ The correct answer is option A.