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Fluid Mechanics

The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is________________?

Fluid Mechanics /
The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is________________?

A. 1/3
B. 1/4
C. 1/2
D. 2/3

The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is________________? Read More »

Fluid Mechanics

If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be___________________?

Fluid Mechanics /
If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be___________________?

A. from reservoir A to reservoirs B and C
B. from reservoir B to reservoirs C and A
C. from reservoir C to reservoirs A and B
D. unpredictable

If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be___________________? Read More »

Fluid Mechanics

The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is__________________?

Fluid Mechanics /
The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is__________________?

A. 0.40 cm
B. 0.20 cm
C. 0.10 cm
D. 0.05 cm
Assume that boundary layer is entirely laminar

The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is__________________? Read More »

Fluid Mechanics

Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is________________?

Fluid Mechanics /
Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is________________?

A. less than d
B. between d and 1.5 d
C. between 1.5 d and 2d
D. greater than 2d

Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is________________? Read More »

Fluid Mechanics

The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is_____________________?

Fluid Mechanics /
The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is_____________________?

A. 32 km
B. 20 km
C. 8 km
D. 4 km

The length of a pipe is 1 km and its diameter is 20 cm. If the diameter of an equivalent pipe is 40 cm, then its length is_____________________? Read More »

Fluid Mechanics