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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is

20 r.p.m.
80 r.p.m.
40 r.p.m.
10 r.p.m.

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Hydraulics and Fluid Mechanics in ME
Hot wire anemometer is used to measure

Pressure in gases
Gas velocities
Pressure in liquids
Liquid discharge

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Hydraulics and Fluid Mechanics in ME
The velocity at which the flow changes from laminar flow to turbulent flow is called

Sub-sonic velocity
Super-sonic velocity
Velocity of approach
Critical velocity

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Hydraulics and Fluid Mechanics in ME
Indicator diagram of a reciprocating pump is a graph between

Flow vs. speed
Pressure in cylinder vs. swept volume
Pressure vs. speed
Flow vs. swept volume

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the elastic force is called

Mach number
Froude's number
Weber's number
Reynold's number

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Hydraulics and Fluid Mechanics in ME
The wake

None of these
always occurs after a separation point
is a region of high pressure intensity
always occurs before a separation point

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