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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Which of the following instrument can be used for measuring speed of an aeroplane

pitot tube
rotameter
Venturimeter
Orifice plate

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Hydraulics & Fluid Mechanics
The units of viscosity are

newton-sec/metre
newton-sec/metre2
kg sec/metre
metre2/se

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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 discharge of a liquid of kinematic viscosity 4 cm²/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is

TURBULENT FLOW
NOT PREDICTABLE FROM THE GIVEN DATA
LAMINAR FLOW
TRANSITION FLOW

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Hydraulics & Fluid Mechanics
The peoperty by virtue of which a liquid opposes relative motion between its different layers is called

co-efficient of viscosity
osmosis
surface tension
viscosity

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Hydraulics & Fluid Mechanics
Flow at constant rate through a tapering pipe is i) steady flow ii) uniform flow iii) unsteady flow iv) non-uniform flow The correct answer is

(i) and (ii)
(i)and(iv)
(ii) and (iv)
(ii) and (iii)

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