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Test: Hydraulics & Fluid Mechanics - 3 - Civil Engineering (CE) MCQ


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25 Questions MCQ Test - Test: Hydraulics & Fluid Mechanics - 3

Test: Hydraulics & Fluid Mechanics - 3 for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Test: Hydraulics & Fluid Mechanics - 3 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Hydraulics & Fluid Mechanics - 3 MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Hydraulics & Fluid Mechanics - 3 below.
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Test: Hydraulics & Fluid Mechanics - 3 - Question 1

Reynold's number is the ratio of inertia force to

Test: Hydraulics & Fluid Mechanics - 3 - Question 2

The unit of dynamic viscosity in S.I. units is

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Test: Hydraulics & Fluid Mechanics - 3 - Question 3

Bulk modulus of a fluid __________ as the pressure increases.

Test: Hydraulics & Fluid Mechanics - 3 - Question 4

The hydraulic gradient line may be above or below the centre line of the pipe.

Test: Hydraulics & Fluid Mechanics - 3 - Question 5

A water tank contains 1.3 m deep water. The pressure exerted by the water per metre length of the tank is

Detailed Solution for Test: Hydraulics & Fluid Mechanics - 3 - Question 5

We know pressure exerted per unit length = ωH2/2.

So, the pressure of water per metre length = (9. 81x103x1.32) /2.

= 8.29 KN.

Test: Hydraulics & Fluid Mechanics - 3 - Question 6

The depth of water in a channel corresponding to the minimum specific energy is known as critical depth.

Test: Hydraulics & Fluid Mechanics - 3 - Question 7

The specific gravity has no units.

Test: Hydraulics & Fluid Mechanics - 3 - Question 8

The ratio of the inertia force to the gravity force is called Froude number.

Detailed Solution for Test: Hydraulics & Fluid Mechanics - 3 - Question 8

Yes, the Froude number is the ratio of the inertia force to the gravity force. It is a dimensionless quantity that is used to explain the effect of gravity on the motion of a fluid.

Test: Hydraulics & Fluid Mechanics - 3 - Question 9

Which of the following statement is wrong?

Test: Hydraulics & Fluid Mechanics - 3 - Question 10

A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is

Test: Hydraulics & Fluid Mechanics - 3 - Question 11

The Francis formula for the discharge over Cippoletti weir is

Test: Hydraulics & Fluid Mechanics - 3 - Question 12

A manometer can be used to measure vacuum pressures.

Test: Hydraulics & Fluid Mechanics - 3 - Question 13

Laminar flow __________ place at very low velocities.

Test: Hydraulics & Fluid Mechanics - 3 - Question 14

The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular notch is given by

Test: Hydraulics & Fluid Mechanics - 3 - Question 15

The tendency of a liquid to uplift a submerged body, because of the upward thrust of the liquid, is known as buoyancy.

Test: Hydraulics & Fluid Mechanics - 3 - Question 16

An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 which the free surface of liquid makes with the horizontal is such that (where a = Horizontal acceleration of the tank, and g = Acceleration due to gravity)

Test: Hydraulics & Fluid Mechanics - 3 - Question 17

The discharge over a triangular notch is

Test: Hydraulics & Fluid Mechanics - 3 - Question 18

The discharge through an external mouthpiece is given by (where a = Cross-sectional area of the mouthpiece, and H = Height of liquid above the mouthpiece)

Test: Hydraulics & Fluid Mechanics - 3 - Question 19

The loss of pressure head in case of laminar flow is proportional to

Detailed Solution for Test: Hydraulics & Fluid Mechanics - 3 - Question 19

Hf = flv2 / 2gd

Hf  = head loss

f = friction factor

l = length of the pipe

v= velocity of fluif flowing in the pipe

d = Diameter of the pipe 

Test: Hydraulics & Fluid Mechanics - 3 - Question 20

The flow of water through the hole in the bottom of a wash basin is an example of

Test: Hydraulics & Fluid Mechanics - 3 - Question 21

A glass tube of smaller diameter is used while performing an experiment for the capillary rise of water because

Test: Hydraulics & Fluid Mechanics - 3 - Question 22

The viscosity of a liquid is due to cohesion of its particles.

Test: Hydraulics & Fluid Mechanics - 3 - Question 23

A compound pipe is required to be replaced by a new pipe. The two pipes are said to be equivalent, if

Test: Hydraulics & Fluid Mechanics - 3 - Question 24

In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Test: Hydraulics & Fluid Mechanics - 3 - Question 25

The viscosity of water is __________ than that of mercury.

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