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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
In a Sutro weir, the discharge is proportional to (where H is head)

H3/2
H
H1/2
H5/2

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Hydraulics & Fluid Mechanics
Operation of McLeod gauge used for low pressure measurement is based on the principle of

Pascal’s law
gas law
Charle’s law
Boyle’s law

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Hydraulics & Fluid Mechanics
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

remain same
increase
increase/decrease depending on depth of immersion
decrease

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Hydraulics & Fluid Mechanics
Two pipe systems are said to be equivalent when

length and diameter are same in two systems
length of pipe and discharge are same in two systems
friction factor and length are same in two systems
head loss and discharge are same in two systems

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Hydraulics & Fluid Mechanics
The difference of pressure between the inside and outside of a liquid drop is

p = T/2r
(d)p = 2T/r
(a)p = Txr
(b)p = T/r

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Hydraulics & Fluid Mechanics
Uniform flow occurs when

size and shape of the cross section in a particular length remain constant
size and cross section change uniformly along length
the flow is streamline
the flow is steady

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