500 Best Hydraulics MCQ

Q193). A water tank partially filled with water is being carried on a truck moving with a constant horizontal acceleration. The level of the water

a).rises on the front side of the tank
b).falls on the back side of the tank
c).remains the same at both sides of the tank
d).rises on the back side and falls on the front side

Correct Answer:
rises on the back side and falls on the front side
Explanation:



Q194). An error of 1% in measuring the head of water over the crest of a rectangular weir, produces an error in the discharge which is equal to

a).0.0125
b).0.015
c).0.0175
d).0.0225

Correct Answer:
0.015
Explanation:



Q195). Orifice-meter is used to measure

a).pressure at the point
b).discharge
c).average speed
d).velocity.

Correct Answer:
discharge
Explanation:



Q196). Pick up the correct statement from the following :

a).Dimensional homogeneity means the dimensions of each term in an equation on both sides are equal
b).Dimensionally homogeneous equations are independent of the system of units
c).In dimensionally homogeneous equation, the powers of fundamental dimensions on either side of the equation are identical
d).All the above.

Correct Answer:
All the above.
Explanation:



Q197). The ratio of inertia force of a flowing fluid and the viscous force of the liquid is called :

a).Renold’s number
b).Froude’s number
c).Euler’s number
d).Weber’s number.

Correct Answer:
Renold’s number
Explanation:



Q198). Water belongs to

a).Newtonian fluids
b).non-Newtonian fluids
c).compressible fluid
d).none of these.

Correct Answer:
Newtonian fluids
Explanation:



Q199). Hydraulic radius is equal to

a).area divided by the square of wetted perimeter
b).area divided by wetted perimeter
c).wetted perimeter divided by area
d).square root of the area.

Correct Answer:
area divided by wetted perimeter
Explanation:



Q200). The acceleration required to accelerate a rectangular tank containing water horizontally so that the slope of its free surface is 45°, is

a).g/2
b).g
c).2g
d).2.5g

Correct Answer:
g
Explanation:



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