Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

Hydraulics and Fluid Mechanics in ME
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

wQ (Hs + Hd)

wQ (Hs - Hd)

wQHd

wQHs

wQ (Hs + Hd)

wQ (Hs - Hd)

wQHd

wQHs

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Hydraulics and Fluid Mechanics in ME
The force of buoyancy is always __________ the weight of the liquid displaced by the body.

More than

None of these

Equal to

Less than

More than

None of these

Equal to

Less than

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Four times

Double

Eight times

Sixteen times

Four times

Double

Eight times

Sixteen times

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Hydraulics and Fluid Mechanics in ME
The Reynold's number of a ship is __________ to its velocity and length.

Inversely proportional

None of these

Directly proportional

Square root of velocity

Inversely proportional

None of these

Directly proportional

Square root of velocity

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Hydraulics and Fluid Mechanics in ME
The total head of a liquid particle in motion is equal to

Potential head - (pressure head + kinetic head)

Kinetic head - (pressure head + potential head)

Pressure head - (kinetic head + potential head)

Pressure head + kinetic head + potential head

Potential head - (pressure head + kinetic head)

Kinetic head - (pressure head + potential head)

Pressure head - (kinetic head + potential head)

Pressure head + kinetic head + potential head

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Hydraulics and Fluid Mechanics in ME
The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)

μπ²N/60t) × (R₁³ - R₂³)

(μπ²N/60t) × (R₁ - R₂)

(μπ²N/60t) × (R₁⁴ - R₂⁴)

(μπ²N/60t) × (R₁² - R₂²)

μπ²N/60t) × (R₁³ - R₂³)

(μπ²N/60t) × (R₁ - R₂)

(μπ²N/60t) × (R₁⁴ - R₂⁴)

(μπ²N/60t) × (R₁² - R₂²)

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

Hydraulics and Fluid Mechanics in ME The force of buoyancy is always __________ the weight of the liquid displaced by the body.

Hydraulics and Fluid Mechanics in ME In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Hydraulics and Fluid Mechanics in ME The Reynold's number of a ship is __________ to its velocity and length.

Hydraulics and Fluid Mechanics in ME The total head of a liquid particle in motion is equal to

Hydraulics and Fluid Mechanics in ME The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)

Hydraulics and Fluid Mechanics in ME
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

Hydraulics and Fluid Mechanics in ME
The force of buoyancy is always __________ the weight of the liquid displaced by the body.

Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Hydraulics and Fluid Mechanics in ME
The Reynold's number of a ship is __________ to its velocity and length.

Hydraulics and Fluid Mechanics in ME
The total head of a liquid particle in motion is equal to

Hydraulics and Fluid Mechanics in ME
The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)