Q.1
The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be
Q.2
A metal with specific gravity of o floating in a fluid of same specific gravity a will
Q.3
The time oscillation of a floating body with increase in metacentric height will be
Q.4
If no resistance is encountered by displacement, such a substance is known as
Q.5
The volumetric change of the fluid caused by a resistance is known as
Q.6
A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is
Q.7
The center of pressure of a surface subjected to fluid pressure is the point
Q.8
Surface tension
Q.9
Piezometer is used to measure
Q.10
Barometer is used to measure
Q.11
Differential monometer is used to measure
Q.12
The normal stress in a fluid will be constant in all directions at a point only if
Q.13
A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is
Q.14
The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is (where R is radius of pipe)
Q.15
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?
Q.16
Hot wire anemometer is used to measure
Q.17
Choose the correct relationship
Q.18
If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is
Q.19
Manometer is used to measure
Q.20
Coefficient of discharge for a totally submerged orifice as compared to that for an orifice discharging free is
Q.21
Practical fluids
Q.22
General energy equation holds for
Q.23
The pitot tube is used to measure
Q.24
Hot wire anemometer is used to measure
Q.25
Units of surface tension are
Q.26
Dimensions of surface tension are
Q.27
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem
Q.28
The angle of contact in case of a liquid depends upon
Q.29
When the velocity distribution is uniform over the cross-section, the correction factor for momentum is
Q.30
Size of a venturimeter is specified by
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