6391. Gradually varied flow in open channel is a/an __________ flow.
Steady uniform
Steady non-uniform
Unsteady uniform
Unsteady non-uniform
✅ The correct answer is option B.
Chemical Engineering
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6392. At high Reynolds number
Inertial forces control and viscous forces are unimportant
Viscous forces predominate
Inertial forces are unimportant and viscous forces control
None of these
✅ The correct answer is option A.
6393. The head loss in turbulent flow in pipe is proportional to(where, V = velocity of fluid through the pipe)
V²
1/V²
1/V
V
✅ The correct answer is option A.
6394. An ideal fluid is
Frictionless & incompressible
One, which obeys Newton’s law of viscosity
Highly viscous
None of these
✅ The correct answer is option A.
6395. The terminal velocity of a small sphere settling in a viscous fluid varies as the
First power of its dimeter
Inverse of the fluid viscosity
Inverse square of the diameter
Square of the difference in specific weights of solid & fluid
✅ The correct answer is option B.
6396. Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will __________ the gas discharge pressure.
Increase
Decrease
Not change
Exponentially decrease
✅ The correct answer is option A.
6397. The maximum discharge through a circular channel takes place, when the depth of the fluid flow is __________ times the pipe diameter.
0.25
0.5
0.66
0.95
✅ The correct answer is option D.
6398. N. second/m² is
The S.I. unit of dynamic viscosity
The S.I. unit of kinematic viscosity
Equivalent to one poise
Equivalent to one stoke
✅ The correct answer is option A.
6399. A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by
Decreasing the size of the inlet pipe
Increasing the size of the inlet pipe
Lowering the pump position
Both B and C
✅ The correct answer is option D.
6400. Dimension of surface tension is(where, F = force, L = length)
FL⁻¹
F⁻¹ . L
F.L⁻²
F⁻² . L
✅ The correct answer is option A.