Q.1

The diameter (d) of a nozzle fixed at the end of a pipe (diameter D, length L) for maximum energy, is

Q.2

The ratio of maximum velocity to average velocity of viscous fluid through a circular pipe is

  • 0.5
  • 0.75
  • 1.25
  • 2.00
Q.3

Pick up the correct statement regarding Borda's mouth piece running full from the following :

  • Actual velocity at the out let is gH
  • Theoretical velocity at the outlet is 2gH
  • Coefficient of velocity is 1/2
  • Coefficient of contraction is 1
  • All the above.
Q.4

Most economical section of a circular channel for maximum discharge

  • depth of water = 0.95 diameter of circular section
  • hydraulic mean depth = 0.286 diameter of circular section
  • wetted perimeter = 2.6 diameter of circular section
  • wetted perimeter = 2.83 depth of water
  • all the above.
Q.5

A pitot tube is used to measure

  • pressure
  • difference in pressure
  • velocity of flow
  • none of these.
Q.6

The shear stress distribution in viscous fluid through a circular pipe is :

  • maximum at the centre
  • maximum at the inside of surface
  • same throughout the section
  • none of these.
Q.7

Differential manometers are used to measure

  • pressure in water channels, pipes, etc.
  • difference in pressure at two points
  • atmospheric pressure
  • very low pressure.
Q.8

Unit of kinematic viscosity is

  • m2/sec
  • Newton sec/m2
  • Newton sec/m3
  • Kg sec/m2.
Q.9

The thickness of a sharp crested weir is kept less than

  • one-third of the height of water on the sill
  • one-half of the height of water on the sill
  • one-fourth of the height of water on the sill
  • two-third of the height of water on the sill
  • none of these.
Q.10

A tankxxcontaining an oil of specific gravity 0.is moved with an acceleration g/2 m sec2. The ratio of the pressures at its bottom when it is moving vertically up and down, is

  • 2
  • 3
  • 1/2
  • 1/3
Q.11

The property of steam function ψ is :

  • ψ is constant everwhere on any stream line
  • the flow around any path in the fluid is zero for continuous flow
  • the rate of change of ψ with distance in an arbitrary direction, is proportional to the component of velocity normal to that direction
  • the velocity vector may be found by differentiating the stream function
  • all the above.
Q.12

Pick up the correct statement from the following :

  • For tranquil flow h > 2g or v <
  • For critical flow
  • For torrential flow h > or v < gh
  • None of these.
Q.13

The maximum vacuum created at the summit of a syphon is

  • 2.7 m of water
  • 7.4 m of water
  • 5.5 m of water
  • none.
Q.14

Time of emptying liquid from a hemispherical vessel through an orifice at its bottom, is

Q.15

The side slope of Cipolletti weir is generally kept

  • 1 to 4
  • 1 to 3
  • 1 to 2
  • 1 : 5
Q.16

Highest dam in India, is

  • Bhakra dam
  • Hirakund dam
  • Nagarjuna Sagar dam
  • Iddiki dam.
Q.17

The side slope of Cipolletti weir is generally kept

  • 1 to 4
  • 1 to 3
  • 1 to 2
  • 1 : 5
Q.18

If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.is 0.1 kg/cm2, the pressure at a depth of 2.5 m, is

  • 1 metre of water
  • 2 metres of water
  • 3 metres of water
  • 3.5 metres of water
  • 4.0 metres of water.
Q.19

Highest dam in India, is

  • Bhakra dam
  • Hirakund dam
  • Nagarjuna Sagar dam
  • Iddiki dam.
Q.20

Critical depth (h) of a channel, is

Q.21

Critical depth (h) of a channel, is

0 h : 0 m : 1 s