Hydraulics MCQ Practice Questions (Civil Engineering) Set 4

Euler's equation for motion of liquids, is given by:


A.


B.


C.


D.

?dp + gdz + vdv = 0


Options are :

  • B
  • C
  • A
  • D

Answer :C

Irrigation MCQ Practice Questions (Civil Engineering) Set 1

Pick up the incorrect statement from the following:


Options are :

  • In radial flow, fluid flows such that pressure and velocity at any point change with respect to its distance from the central axis
  • In radial flow, flow may take place radially inward to or outward from the centre
  • In radial flow, flow is one dimensional with stream lines parallel
  • In radial flow, velocity of flow is in a radial direction

Answer :In radial flow, flow is one dimensional with stream lines parallel

Hydraulics MCQ Practice Questions (Civil Engineering) Set 4

The most efficient channel section, is:


Options are :

  • Triangular
  • Half hexagon in the form of trapezoid
  • Semi-circular
  • Rectangular

Answer :Half hexagon in the form of trapezoid

A nozzle is fitted at the end of a pipe whose length is 320 m and diameter is 10 cm. If the value of f = 0.01, the diameter of the nozzle for the maximum transmission of power through the nozzle is:


Options are :

  • 2.6 cm
  • 2.5 cm
  • 2.4 cm
  • 2.7 cm

Answer :2.5 cm

Pick up the correct statement from the following:


Options are :

  • In uniform flow, the velocity of a fluid does not change with respect to length of flow direction
  • In incompressible flow the density of a fluid remains constant
  • All the above
  • In compressible flow, the density of a fluid changes from point to point

Answer :All the above

Concrete Technology MCQ Practice Questions (Civil Eng) Set 2

Frictional loss of head includes the loss of energy due to:


Options are :

  • Both A and B
  • Turbulence
  • None of these
  • Viscosity

Answer :None of these

To measure very low pressure, we use:


Options are :

  • Barometers
  • Manometers
  • Differential manometers
  • Piezometers

Answer :Manometers

A triangular notch is preferred to a rectangular notch because:


Options are :

  • All the above
  • It gives more accurate results for low discharge
  • Only one reading is required
  • It measures a wide range of flows accurately
  • Its formula is simple to remember

Answer :All the above

Concrete Technology MCQ Practice Questions (Civil Eng) Set 7

Pick up the correct statement regarding convergent divergent mouth piece from the following:


Options are :

  • All the above
  • It converges upto Venacontracta and then diverges
  • In this mouth piece there is no loss of energy due to sudden enlargement
  • The coefficient of discharge is unity

Answer :All the above

Equation of continuity of fluids is applicable only if:


Options are :

  • Flow is compressive
  • Flow is steady
  • Velocity is uniform over the cross-sections
  • All the above
  • Flow is one dimensional

Answer :All the above

The discharge through an internal mouth piece is more if its length is:


A.

<

diameter


B.

< diameter


C.

? diameter


D.

None of these


Options are :

  • D
  • B
  • C
  • A

Answer :C

Concrete Technology MCQ Practice Questions (Civil Eng) Set 7

Water flows through a convergent mouthpiece of diameter 4 cm at convergence under a head of 3 metres. If the maximum vacuum pressure is 9 metres of water, the maximum diameter of divergence, to aviod separation of flow, is:


Options are :

  • 6 cm
  • ?2 cm
  • 4 cm
  • 2?3 cm

Answer :?2 cm

A spherical load 900 kg is rolled through 9.8 m across the deck of a ship weighing 10, 000 kg. If the metacentric height of the ship is 5 metres, the angle of heel, is:


Options are :

  • 10 20'
  • 10 5'
  • 10 10'
  • 10 15'

Answer :10 15'

One metric slug is equal to:


Options are :

  • 9.81 kg wt
  • 1 kg wt
  • 9.81 kg mass
  • 0.98 kg wt

Answer :9.81 kg mass

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 1

The value of kinetic energy correction factor (a) for a laminar flow through a circular pipe, is:


Options are :

  • 1.0
  • 2.5
  • 0.5
  • 2.0
  • 1.5

Answer :2.0

Discharge through a totally submerged orifice, is directly proportional to:


Options are :

  • None of these
  • Reciprocal of the area of the opening
  • Square root of the opening
  • Square root of the difference in elevation of water surface
  • Difference in elevation of water surfaces

Answer :Square root of the difference in elevation of water surface

The ratio of the maximum height to which a jet inclined through ? rises to its total horizontal span is:


A.

sin ?


B.

cos ?


C.

tan ?


D.

cot ?


Options are :

  • D
  • A
  • B
  • C

Answer :C

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 1

Falling drops of water become spheres due to:


Options are :

  • Viscosity
  • Surface tension
  • Cohesion
  • Adhesion

Answer :Surface tension

If H is height of the liquid above the sill, the effect of end contractions, according to Francis formula, is:


Options are :

  • 0.5 H
  • 0.2 H
  • 0.1 H
  • 0.3 H
  • 0.4 H

Answer :0.1 H

The line joining the points to which the liquid rises in vertical piezometer tubes fitted at different cross-sections of a conduit, is known as:


Options are :

  • Pressure grade line
  • Piezometric line
  • Hydraulic grade line
  • Hydraulic gradient
  • All the above

Answer :All the above

Concrete Technology MCQ Practice Questions (Civil Eng) Set 3

The shape of fire hose nozzle is generally kept:


Options are :

  • Cylindrical
  • Convergent divergent
  • Divergent
  • Convergent

Answer :Convergent

Pick up the correct statement from the following:


Options are :

  • For maximum velocity of flow, the depth of water in the circular channel must be 0.81 times the diameter of the channel
  • All the above
  • For maximum discharge the depth of flow must be 0.95 times the diameter of circular channel
  • For maximum velocity, the hydraulic mean depth must be 0.3 times the diameter of circular channel

Answer :All the above

A load w is rolled a distance d across the deck of a ship of weight W, due to which the ship heels through ?. The metacentric height of the ship, is:


A.


B.


C.


D.


Options are :

  • C
  • D
  • B
  • A

Answer :C

Hydraulics MCQ Practice Questions (Civil Engineering) Set 2

The length of hydraulic jump is roughly:


Options are :

  • 5 to 7 times its height
  • 2 to 3 times its height
  • None of these
  • 3 to 5 times its height

Answer :5 to 7 times its height

For uniform flow in canals:


Options are :

  • There is a balance between the frictional loss and drop in elevation of the channel
  • All the above
  • Bed of channel represents the hydraulic gradient
  • Bed and free water surfaces of a channel are parallel to each other

Answer :All the above

With a clinging nappe of a weir, the excess discharge, is:


Options are :

  • 8% to 10%
  • 6% to 7%
  • 30% to 40%
  • 25% to 30%
  • 18% to 20%

Answer :25% to 30%

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 7

If H is the difference of liquid levels on two sides of an orifice (width b, depth d), the discharge through the orifice will be:


Options are :

  • Cdbd^(2)?2gH
  • Cdbd.2g H^(1/2)
  • Cdbd?2gh
  • Cdb^(2)d?2gH

Answer :Cdbd?2gh

For solving the problems is hydraulic engineering, the velocity used is:


Options are :

  • None of these
  • Mean of the velocities at the centre and that along the pipe surface
  • Velocity at the centre of pipe section
  • Average velocity of flow over a section

Answer :Average velocity of flow over a section

The metacentric height of a body equals the distance between:


Options are :

  • The centre of buoyancy and metacentre
  • None of these
  • The metacentre and centre of gravity
  • The centre of gravity and centre of buoyancy

Answer :The metacentre and centre of gravity

For steady flow in open channels, which one of the following does not change:


Options are :

  • Velocity of flow
  • Rate of flow
  • Depth of flow
  • All of these

Answer :All of these

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