Fluid Mechanics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Fluid Mechanics, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Fluid Mechanics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Fluid Mechanics mcq questions that explore various aspects of Fluid Mechanics problems. Each MCQ is crafted to challenge your understanding of Fluid Mechanics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Fluid Mechanics MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Fluid Mechanics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Fluid Mechanics knowledge to the test? Let's get started with our carefully curated MCQs!

Fluid Mechanics MCQs | Page 68 of 77

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Q671.
Cavitation can be prevented by

a.

suitably designing the pump.

b.

maintaining the suction head sufficiently greater than the vapour pressure.

c.

maintaining suction head = developed head.

d.

maintaining suction head lower than the vapour pressure.

Discuss
Answer: (b).maintaining the suction head sufficiently greater than the vapour pressure.
Q672.
Assuming flow to be laminar, if the diameter of the pipe is halved, then the pressure drop will

a.

increase

b.

decrease

c.

remain same

d.

be quadrupled

Discuss
Answer: (a).increase
Q673.
Steady flow occurs, when the

a.

conditions change steadily with time.

b.

conditions are the same at the adjacent points at any instant.

c.

conditions do not change with time at any point.

d.

rate of the velocity change is constant.

Discuss
Answer: (c).conditions do not change with time at any point.
Q674.
With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost

a.

increases

b.

decreases

c.

remains unchanged

d.

increases exponentially

Discuss
Answer: (b).decreases
Q675.
Pick out the wrong statement:

a.

The vacuum pressure is always the negative gauge pressure.

b.

The pressure of the liquid measured by a piezometer tube is the gauge pressure.

c.

Manometric liquid should have high surface tension.

d.

The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity.

Discuss
Answer: (d).The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity.
Q676.
Medium viscosity lubricating oil can be most ideally pumped by a __________ pump.

a.

vane

b.

piston

c.

centrifugal

d.

plunger

Discuss
Answer: (a).vane
Q677.
In a fully turbulent flow (Re > 10⁵) in a pipe of diameter 'd', for a constant pressure gradient, the dependence of volumetric flow rate of an incompressible fluid is

a.

d

b.

d²

c.

d^2.5

d.

d⁴

Discuss
Answer: (c).d^2.5
Q678.
Pump used for the transportation of molten sodium in a fast breader reactor is a/an __________ pump.

a.

reciprocating

b.

plunger

c.

electromagnetic

d.

gear

Discuss
Answer: (c).electromagnetic
Q679.
Small pressure differences in liquids is measured using a/an

a.

U-tube manometer.

b.

inclined tube manometer.

c.

pitot tube.

d.

none of these.

Discuss
Answer: (b).inclined tube manometer.
Q680.
Venturimeters, orificemeters and nozzles are used to measure the fluid discharge from a pipeline. The average fluid velocity in a pipeline can be measured by a/an

a.

weir

b.

hot wire anemometer

c.

cup and vane aneometer

d.

none of these

Discuss
Answer: (b).hot wire anemometer
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