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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The optimum value of vane exit angle for a centrifugal pump impeller is

50-60°
30-40°
10-15°
20-25°

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Hydraulics and Fluid Mechanics in ME
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)

(q/g)1/2
(q⁴/g)1/5
(q³/g)1/4
(q²/g)1/3

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Hydraulics and Fluid Mechanics in ME
In order to measure the flow with a Venturimeter, it is installed in

Inclined line with flow downwards
Horizontal line
Any direction and in any location
Inclined line with flow upwards

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

0.95 times
0.34 times
0.67 times
0.81 times

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Hydraulics and Fluid Mechanics in ME
One poise is equal to

100 N-s/m2
10 N-s/m2
1 N-s/m2
0.1 N-s/m2

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Hydraulics and Fluid Mechanics in ME
The coefficient of viscosity may be determined by

Rotating cylinder method
All of these
Capillary tube method
Orifice type viscometer

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