Gravitational & buoyant
Centrifugal & drag
Gravitational or centrifugal buoyant drag
External, drag & viscous
✅ The correct answer is option C.
Fluid Mechanics MCQs
In a dry packed bed, the pressure drop will be changed by increasing the flow rate as
V1.8
V-0.8
V
V-1
✅ The correct answer is option A.
Mercury is an ideal barometric fluid mainly due to its
High density
Low compressibility
Low capillary action
Very low vapor pressure
✅ The correct answer is option D.
Schedule number of a pipe, which is a measure of its wall thickness, is given by
1000 P’/S
100 P’/S
1000 S/P’
10000 P’/S
✅ The correct answer is option A.
The ratio of width to depth for the most economical rectangular section in open channel flow is
0.5
1
1.5
2
✅ The correct answer is option D.
A stream line is
Fixed in space in steady flow
Always the path of particle
Drawn normal to the velocity vector at every point
A line connecting the mid points of flow cross-section
✅ The correct answer is option A.
Disc compensators are provided in large diameter fuel gas carrying pipelines to
Keep the pipe in proper orientation
Make the pipe joint leak-proof
Account for contraction/expansion of pipe due to temperature changes of the surroundings
Account for the pressure variation side the pipeline
✅ The correct answer is option C.
In case of a centrifugal pump, the theoretical head developed is dependent on the __________ the impeller.
Speed of
Diameter of
Fluid velocity leaving
All of the above
✅ The correct answer is option D.
In a stabilised soap bubble, pressure inside it compared to external pressure is
More
Less
Same
Unpredictable
✅ The correct answer is option A.
A centrifugal pump designed to pump water is employed to pump a more viscous oil. In the later case, the pump
Develops a lower head
Capacity is reduced
Requires more power
All of the above
✅ The correct answer is option D.