TRUE
FALSE
✅ The correct answer is option A.
Hydraulics and Fluid Mechanics MCQs
The power transmitted through the pipe is maximum when the head lost due to friction is equal to
one-fourth of the total supply head
one-third of the total supply head
one-half of the total supply head
two-third of the total
✅ The correct answer is option B.
If the value of coefficient of discharge increases, the discharge through the orifice decreases.
TRUE
FALSE
✅ The correct answer is option B.
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid
remains horizontal
becomes curved
falls on the front end
falls on the back end
✅ The correct answer is option C.
Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as
lift
drag
stagnation pressure
bulk modulus
✅ The correct answer is option B.
Barometer is used to measure
velocity of liquid
atmospheric pressure
pressure in pipes and channels
difference of pressure
✅ The correct answer is option B.
When the Mach number is more than 6, the flow is called
sub-sonic flow
sonic flow
super-sonic flow
hyper-sonic flow
✅ The correct answer is option D.
In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be
running full
running free
partially running full
partially running free
✅ The correct answer is option B.
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)
✅ The correct answer is option B.
Turbulent flow takes place at high velocities.
Agree
Disagree
✅ The correct answer is option A.