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Fluid Mechanics

Fluid Mechanics
For pipes that must be broken at intervals for maintenance, the connector used should be a/an

Tee
Reducer
Union
Elbow

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Fluid Mechanics
While starting a centrifugal pump, its delivery valve should be kept

Either opened or closed ; it does not make any difference
Opened
Either opened or closed; depending on the fluid viscosity
Closed

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Fluid Mechanics
Dimension of kinematic viscosity is

L² . T⁻²
L² . T⁻¹
L²T
MLT⁻¹

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Fluid Mechanics
Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.

40
1
10
70

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Fluid Mechanics
The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.

P and R
P, Q and R
R and S
P, Rand S

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Fluid Mechanics
Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton's law of viscosity. (II) Newton's second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to boundary. (V) Fluid cannot penetrate a boundary.

II, IV, V
II, III, V
I, II, V
I, II, III

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