171. When the venturimeter is inclined, then for a given flow it will show __________ reading.
same
more
less
✅ The correct answer is option A.
Hydraulics and Fluid Mechanics MCQs
172. The velocity at which the turbulent flow starts is known as higher critical velocity.
Yes
No
✅ The correct answer is option A.
173. A flow in which the quantity of liquid flowing per second is not constant, is called
streamline flow
turbulent flow
steady flow
unsteady flow
✅ The correct answer is option D.
174. An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.
equal to
directly proportional
inversely proportional
✅ The correct answer is option B.
175. A weir, generally, used as a spillway of a dam is
narrow crested weir
broad crested weir
Ogee weir
submerged weir
✅ The correct answer is option C.
176. The intensity of pressure on an immersed surface __________ with the increase in depth.
does not change
increases
decreases
✅ The correct answer is option B.
177. An orifice is said to be large, if
the size of orifice is large
the velocity of flow is large
the available head of liquid is more than 5 times the height of orifice
the available head of
✅ The correct answer is option D.
178. The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.
0.34 times
0.67 times
0.81 times
0.95 times
✅ The correct answer is option C.
179. The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump.
Yes
No
✅ The correct answer is option A.