Home
Current Affairs January 2024

What is the correct answer?

4

According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

A. A × √(m × i)

B. C × √(m × i)

C. AC × √(m × i)

D. mi × √(A × C)

Correct Answer :

C. AC × √(m × i)


Related Questions

What is the correct answer?

4

The top of the weir over which the water flows is known as

A. Sill or crest

B. Nappe or vein

C. Orifice

D. None of these

What is the correct answer?

4

A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?

A. The pressure on the wall at the liquid level is minimum

B. The pressure on the bottom of the wall is maximum

C. The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum

D. The pressure on the bottom of the wall is zer

What is the correct answer?

4

The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

A. μ π³ N² R² /1800 t

B. μ π³ N² R⁴ /1800 t

C. μ π³ N² R² /3600 t

D. μ π³ N² R⁴ /3600 t

What is the correct answer?

4

To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than

A. 2.4 m above the hydraulic gradient

B. 6.4 m above the hydraulic gradient

C. 10.0 m above the hydraulic gradient

D. 5.0 above the hydraulic gradient

What is the correct answer?

4

The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)

A. wH/2

B. wH

C. wH2/2

D. wH2/4

What is the correct answer?

4

A fluid in equilibrium can't sustain

A. Tensile stress

B. Compressive stress

C. Shear stress

D. Bending stress

What is the correct answer?

4

In a venturi-flume, the flow takes place at

A. Atmospheric pressure

B. Gauge pressure

C. Absolute pressure

D. None of these

What is the correct answer?

4

The discharge over a triangular notch is

A. Inversely proportional to H3/2

B. Directly proportional to H3/2

C. Inversely proportional to H5/2

D. Directly proportional to H5/2

What is the correct answer?

4

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

A. Double

B. Four times

C. Eight times

D. Sixteen times

What is the correct answer?

4

The pressure in Pascals at a depth of 1 m below the free surface of a body of water will be equal to

A. 1 Pa

B. 91 Pa

C. 981 Pa

D. 9810 Pa

What is the correct answer?

4

The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

A. 0.34 times

B. 0.67 times

C. 0.81 times

D. 0.95 times

What is the correct answer?

4

The center of gravity of the volume of the liquid displaced by an immersed body is called

A. Metacentre

B. Center of pressure

C. Center of buoyancy

D. Center of gravity

What is the correct answer?

4

Dimensions of surface tension are

A. ML°T⁻²

B. ML°T

C. ML r²

D. ML²T²

What is the correct answer?

4

With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will

A. Decrease

B. Increase

C. Remain unchanged

D. Depend upon the characteristics of liquid

What is the correct answer?

4

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

A. The weight of the body

B. More than the weight of the body

C. Less than the weight of the body

D. Weight of the fluid displaced by the body

What is the correct answer?

4

A weir, generally, used as a spillway of a dam is

A. Narrow crested weir

B. Broad crested weir

C. Ogee weir

D. Submerged weir

What is the correct answer?

4

A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

A. Increase

B. Decrease

C. Remain same

D. Increase/decrease depending on depth of immersion

What is the correct answer?

4

The loss of head at exit of a pipe is (where v = Velocity of liquid in the pipe)

A. v²/2g

B. 0.5v²/2g

C. 0.375v²/2g

D. 0.75v²/2g

What is the correct answer?

4

When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.

A. Sum

B. Difference

C. Arithmetic mean

D. Geometric mean

What is the correct answer?

4

Which of the following is the unit of kinematic viscosity?

A. Pascal

B. Poise

C. Stoke

D. Faraday

What is the correct answer?

4

Free surface of a liquid tends to contract to the smallest possible area due to force of

A. Surface tension

B. Viscosity

C. Friction

D. Cohesion

What is the correct answer?

4

In the case of steady flow of a fluid, the acceleration of any fluid particle is

A. Constant

B. Variable

C. Zero

D. Zero under limiting conditions

What is the correct answer?

4

The pressure measured with the help of a Piezometer tube is in

A. N/mm2

B. N/m2

C. Head of liquid

D. All of these

What is the correct answer?

4

Kinematic viscosity is equal to

A. Dynamic viscosity/density

B. Dynamic viscosity × density

C. Density/dynamic viscosity

D. 1/dynamic viscosity × density

What is the correct answer?

4

Which of the following meters is not associated with viscosity?

A. Red wood

B. Say bolt

C. Engler

D. Orsat

What is the correct answer?

4

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

A. dQ/Q = 3/2 × (dH/H)

B. dQ/Q = 2 × (dH/H)

C. dQ/Q = 5/2 × (dH/H)

D. dQ/Q = 3 × (dH/H)

What is the correct answer?

4

A flow in which the quantity of liquid flowing per second is constant, is called __________ flow.

A. Steady

B. Streamline

C. Turbulent

D. Unsteady

What is the correct answer?

4

Center of pressure on an inclined plane is

A. At the Centroid

B. Above the Centroid

C. Below the Centroid

D. At metacentre

What is the correct answer?

4

A fluid having no viscosity is known as

A. Real fluid

B. Ideal fluid

C. Newtonian fluid

D. Non-Newtonian fluid

What is the correct answer?

4

Liquids

A. Cannot be compressed

B. Occupy definite volume

C. Are not affected by change in pressure and temperature

D. None of the above