6421. The __________ pressure is measured by a static tube.
Dynamic
Static
Total
None of these
✅ The correct answer is option B.
Chemical Engineering
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6422. Small pressure differences in liquids is measured using a/an
U-tube manometer
Inclined tube manometer
Pitot tube
None of these
✅ The correct answer is option B.
6423. A centrifugal pump designed for handling water (μ = 1 cp) will deliver __________ when pumping a thicker oil (μ = 30 cp).
Less head & capacity
More head
More capacity
Less head & more capacity
✅ The correct answer is option A.
6424. Correction for capillary effect in manometers (used for pressure measurement) need not be applied, if diameter of the manometer tube is __________ mm.
< 4
> 4
> 12.5
< 10
✅ The correct answer is option C.
6425. The continuity equation
Relates mass flow rate along a stream tube
Relates work and energy
Stipulates that Newton’s second law of motion must be satisfied at every point in the fluid
None of these
✅ The correct answer is option A.
6426. Net positive suction head (NPSH) of a centrifugal pump must be
Greater than the vapour pressure of the liquid
Less than the vapour pressure of the liquid
Equal to the vapour pressure of the liquid
Less than barometric pressure
✅ The correct answer is option A.
6427. In deriving Bernoulli’s equation, fluid is assumed to be
Incompressible, frictionless, steady, along a streamline
Uniform, steady, incompressible, along a streamline
Steady, density being pressure dependent, frictionless
None of these
✅ The correct answer is option A.
6428. A hydraulic press has a ram of 10 cms in diameter and a plunger of 1 cm in diameter. The force required on the plunger to raise a weight of 10 tons on the ram is __________ kg.
10
100
1000
10000
✅ The correct answer is option B.
6429. Choose the correct set of dimensions of viscosity that are equivalent (where, F, M, L, T are dimensions for force, mass, length and time respectively).
FL⁻²T, ML⁻¹T⁻¹
FLT, ML⁻¹T⁻¹
ML⁻¹T⁻³, F⁻¹L²T
F-1L²T⁻¹, MLT⁻³
✅ The correct answer is option A.
6430. The head loss in turbulent flow in a pipe varies
Directly as the velocity
Inversely as the square of the velocity
Approximately as the square of the velocity
Inversely as the square of the diameter
✅ The correct answer is option C.