GATE ME 2022: Fluid Mechanics

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Question 1

Cavitation is caused by ____________.

• Ahigh velocity
• Bhigh pressure
• Cweak material
• Dlow pressure

Question 2

A draft tube is used with __________.

• Aimpulse turbine
• BPelton wheel turbine
• Creaction turbines
• Daxial turbine pumps

Question 3

The pressure difference measured by a mercury oil differential manometer on the two sides of the orifice meter gives a reading of 50 cm of mercury. Determine the differential pressure head in orifice. Take the specific gravity of oil as 0.9.

• A7.05 m of oil
• B5.05 m of oil
• C4.75 of oil
• D3.35 m of oil

Question 4

Unstable equilibrium of a floating body implies________.

• AMetacentre M is above centre of gravity G
• BMetacentre M is below centre of gravity G
• CMetacentre M coincides with centre of gravity G
• DNone of these

Question 5

For an incompressible fluid flow, the stream function is given as ψ = x² – y². The total acceleration at location x = 1 m and y = 1 m is

• A4 m/s²
• B16 m/s²
• C8 m/s²
• D

Question 6

Pipes of length , etc and diameter , etc are connected in series. A single pipe of length having same pressure loss as all pipes in series will have diameter equal to

• A
• B
• C
• D

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