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Hydraulics & Fluid Mechanics

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

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

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Hydraulics & Fluid Mechanics
A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?

25 m/sec
2 m/sec
10 m/sec
50 m/sec

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

at center of pressure
vertically upwards
at metacentre
at e.g. of body

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Hydraulics & Fluid Mechanics
A large Roynold number is indication of

turbulent flow
smooth and streamline flow
LAMINAR FLOW
highly turbulent flow.

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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

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

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

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

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