Store a definte quantity ofwater all the time
Reduce the water hammer
Facilitate easy dismantling of pipeline for cleaning and maintenance
None of these
✅ The correct answer is option B.
Fluid Mechanics MCQs
Baffles in mixing tanks are provided to
Reduce swirling and vortex formation
Increase the structural strength of the tank
Aid in rotational flow
None of these
✅ The correct answer is option A.
The friction factor is
Always inversely proportional to the Reynolds number
Not dimensionless
Not dependent on the roughness of the pipe
None of these
✅ The correct answer is option D.
Volume of liquid displaced by a floating body is equivalent to its
Own weight
Submerged weight
Own volume
Submerged volume
✅ The correct answer is option A.
The pump impeller and the turbine runner in a hydraulic torque converter
Have the same diameter
Have different diameters
Are directly coupled
None of these
✅ The correct answer is option B.
In case of centrifugal fan or blower, the gas capacity varies as
Speed
(speed)2
(speed)3
(speed)0.5
✅ The correct answer is option A.
Purpose of relief valve in a reciprocating pump is to
Protect the pump against developing excessive pressure
Facilitate unidirectional flow of liquid
Reduce the discharge pressure
Control the rate of discharge
✅ The correct answer is option A.
The capacity of a centrifugal pump Can be increased by increasing the
Impeller diameter or speed
Number of pumps and joining them in series
Number of pumps and joining them in parallel
All of the above
✅ The correct answer is option D.
In parallel pipe problems, the
Head loss is the same through each pipe
Discharge is the same through all the pipes
Total head loss is equal to the sum of the head losses through each pipe
None of these
✅ The correct answer is option A.
The pipe wall thickness is minimum for a pipe of given nominal size having schedule number
160
120
80
40
✅ The correct answer is option D.