Hydraulics MCQ Practice Questions (Civil Engineering) Set 5

The velocity of flow (v) at the outlet of a syphon of length l, is given by:


A.


B.


C.


D.


Options are :

  • C
  • D
  • A
  • B

Answer :B

If v1 and v2 are the velocities of flow before and after sudden enlargement in a pipe, the head loss given by Carnot and Borda equation, is:


Options are :

  • (v2^(2) - v1^(2))/2g
  • (v1 + v2)^(2)/2g
  • (v2 - v1)^(2)/2g
  • (v1 - v2)^(2)/2g

Answer :(v1 - v2)^(2)/2g

Construction Management MCQ Practice Questions (Civil Eng) Set 1

An open container filled with water is moved vertically downward with a uniform linear acceleration. The pressure at its bottom will be:


Options are :

  • None of these
  • Greater than static pressure
  • Equal to static pressure
  • Lesser than static pressure

Answer :Lesser than static pressure

The depth of the centre of pressure on a vertical rectangular gate (4 m wide, 3 m high) with water upto top surface, is:


Options are :

  • 2.0 m
  • 1.5 m
  • 2.5 m
  • 1.0 m

Answer :2.0 m

The pressure less than atmospheric pressure is known as:


Options are :

  • Suction pressure
  • All the above
  • Vacuum pressure
  • Negative gauge pressure

Answer :All the above

Theory of Structures MCQ Practice Questions (Civil Eng) Set 1

The flow in open channel is said to be critical if the Froude number is:


Options are :

  • Greater than 1.0
  • Less than 1.0
  • None of these
  • Equal to 1.0

Answer :Equal to 1.0

The dimensions MLT^(-2) refers to:


Options are :

  • None of these
  • Specific weight
  • Discharge
  • Force

Answer :Force

An ideal fluid:


Options are :

  • Obeys Newton's law of velocity
  • Is frictionless and incompressible
  • Is very viscous
  • Is similar to gas

Answer :Is frictionless and incompressible

Concrete Technology MCQ Practice Questions (Civil Eng) Set 8

Practical fluids possess:


Options are :

  • All the above
  • Viscosity
  • Surface tension
  • Compressibility

Answer :All the above

The differential equation dp/? + gdz + vdv = 0 for a fluid motion is suggested by:


Options are :

  • Laplace
  • Leonard Euler
  • Bernoulli
  • Cauchy-Riemann

Answer :Leonard Euler

The formula Q = m x L x ?2g x H^(3/2) where

was suggested by:


Options are :

  • None of these
  • Bazin
  • Francis
  • Cipolletti

Answer :Bazin

RCC Structures Design MCQ Practice Questions (Civil Eng) Set 3

To ensure that water does not rise more than 100 cm above the crest, for a discharge of 5.00 m^(3)/sec, the length of water will be:


Options are :

  • 2.50 m
  • 2.51 m
  • 2.48 m
  • 2.49 m

Answer :2.49 m

For a most economical trapezoidal open channel, the half of the top width must be equal to:


Options are :

  • The depth of flow
  • None of these
  • One sloping side
  • The bed width

Answer :One sloping side

The imaginary line drawn such that the tangents at its all points indicate the direction of the velocity of the fluid particles at each point, is called:


Options are :

  • Stream line
  • Path line
  • Streak line
  • Potential line

Answer :Stream line

Hydraulics MCQ Practice Questions (Civil Engineering) Set 2

In C.G.S. system the units of kinematic viscosity, is:


Options are :

  • Poise
  • None of these
  • Newton
  • Stoke

Answer :Stoke

Chezy's formula is used to determine:


Options are :

  • Velocity of flow in pipe
  • Velocity of flow in open channels
  • None of these
  • Head loss due to friction in pipe

Answer :Velocity of flow in open channels

A rise or fall of liquid in a glass tube of a very small diameter when dipped is:


Options are :

  • Directly proportional to the specific weight of liquid
  • Directly proportional to the force per unit length of periphery
  • Inversely proportional to the diameter of the glass tube
  • Direcly proportional to the sine of the angle of contact

Answer :Directly proportional to the specific weight of liquid

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

When the whole fluid mass rotates either due to fluid pressure or gravity or rotation previously imparted, the motion is known as:


Options are :

  • Free vortex
  • Forced vortex
  • Non-potential vortex
  • Rotational vortex

Answer :Free vortex

An orifice is an opening in a vessel with:


Options are :

  • Partially full flow
  • The water level of the liquid on the up stream side is below the top of the orifice
  • Closed perimeter of regular shape through which water flows
  • Prolonged sides having length of 2 to 3 diameters of the opening in thick wall

Answer :Closed perimeter of regular shape through which water flows

If a pitot tube is placed with its nose facing down stream, the liquid:


A.

Does not rise in the tube


B.

Rises in the tube to a height


C.

Falls in the tube to a depth


D.

None of these


Options are :

  • B
  • A
  • C
  • D

Answer :C

Hydraulics MCQ Practice Questions (Civil Engineering) Set 9

In case of laminar flow through a circular pipe:


Options are :

  • None of these
  • Energy correction factor is 2.00
  • Momentum correction factor is 1.33

Answer :Energy correction factor is 2.00 Momentum correction factor is 1.33

Pick up the correct statement from the following:


Options are :

  • Vertical distance between the total energy line and hydraulic grade line is equal to the velocity head
  • Total energy gradient is the graphical representation of the total head at any section of a pipe line
  • Vertical distance between the total energy line and total energy gradient represents loss of head
  • All the above

Answer :All the above

Theory of Structures MCQ Practice Questions (Civil Eng) Set 4

A non-uniform steady flow is through:


Options are :

  • An expanding tube at increasing rate
  • A long tube at a decreasing rate
  • An expanding tube at constant rate
  • A long pipe at increasing rate

Answer :An expanding tube at constant rate

Uniform flow is said to occur when:


Options are :

  • Frictional loss in the particular length of the channel, will be less than the drop in elevation
  • Size and shape of the cross-section in a particular length remain constant
  • Frictional loss in the particular length of the channel will the more than the drop in its elevation
  • Size and shape of the cross-section change along a length

Answer :Size and shape of the cross-section in a particular length remain constant

Cappoletti weir is a:


Options are :

  • Trapezoidal weir, whose sides slope 1 horizontal to 2 verticals
  • Rectangular weir whose length is kept 3 times the height of the water above sill
  • A combination of rectangular and triangular weirs
  • Triangular weir whose notch angle is 90

Answer :Trapezoidal weir, whose sides slope 1 horizontal to 2 verticals

Concrete Technology MCQ Practice Questions (Civil Eng) Set 7

An error of 1% in measuring the head of water over the crest of a triangular notch, produces an error in the discharge which is equal to:


Options are :

  • 2.0%
  • 1.25%
  • 2.5%
  • 1.5%

Answer :2.5%

The ratio of frictional factor and coefficient of friction used in general equation for a head loss in a pipe, is:


Options are :

  • 4
  • 1
  • 2
  • 3

Answer :4

For exerting a pressure of 4.8 kg/cm2, the depth of oil (specific gravity 0.8), should be:


Options are :

  • 41 cm
  • 60 cm
  • 76 cm
  • 56 cm
  • 40 cm

Answer :60 cm

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

The rise of the liquid along the walls of a revolving cylinder above the initial level, is:


Options are :

  • Greater than the depression of the liquid at the axis of rotation
  • None of these
  • The same as the depression of the liquid at the axis of rotation
  • Lesser than the depression of the liquid at the axis of rotation

Answer :The same as the depression of the liquid at the axis of rotation

Atmospheric pressure varies with:


Options are :

  • Temperature
  • All of the above
  • Weather conditions
  • Altitude

Answer :All of the above

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