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Mcqs

Fluid Mechanics Mcqs

Our 1000+ Fluid Mechanics MCQ (Multiple Choice Questions and Answers) focus on all areas of Fluid Mechanics covering 100+ topics. These topics are chosen from a collection of the most authoritative and best reference books on Fluid Mechanics. One should spend 1 hour daily practicing these MCQs for 2-3 months to learn and assimilate Fluid Mechanics subject comprehensively. This way of systematic learning will prepare anyone easily for Fluid Mechanics exams, contests, online tests, quizzes, MCQ-tests, viva-voce, interviews, and certifications.

 

Fluid Mechanics Multiple Choice Questions Highlights

  • 1000+ Multiple Choice Questions & Answers (MCQs) in Fluid Mechanics with a detailed explanation of every question.
  • These MCQs cover theoretical concepts, true-false(T/F) statements, fill-in-the-blanks and match the following style statements.
  • These MCQs also cover numericals as well as diagram oriented MCQs.
  • These MCQs are organized chapterwise and each Chapter is futher organized topicwise.
  • Every MCQ set focuses on a specific topic of a given Chapter in Fluid Mechanics Subject.

 

Who should Practice Fluid Mechanics MCQs?

  • Students who are preparing for college tests and exams such as mid-term tests and semester tests on Fluid Mechanics.
  • Students who are preparing for Online/Offline Tests/Contests in Fluid Mechanics.
  • Students who wish to sharpen their knowledge of Fluid Mechanics Subject.
  • Anyone preparing for Aptitude test in Fluid Mechanics.
  • Anyone preparing for interviews (campus/off-campus interviews, walk-in interview and company interviews).
  • Anyone preparing for entrance examinations and other competitive examinations.
  • All - Experienced, Freshers and College / School Students.
Latest Popular
Q:

When a fluid is subjected to resistance, it undergoes a volumetric change due to __________

A) Strain B) Cohesion
C) Adhesion D) Compressibility
 
Answer & Explanation Answer: D) Compressibility

Explanation: Compressibility is defined as a measure of relative change in volume of a fluid. In fluid mechanics, it is also called as isothermal compressibility due to increase in pressure and temperature.

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Category: Mechanical Engineering MCQs
Sub Category: Fluid Mechanics Mcqs

2397
Q:

A stone weighs 650 N in air and 275 N in water. Compute its specific gravity.

A) 1.73 B) 2.45
C) 3.46 D) 0.865
 
Answer & Explanation Answer: A) 1.73

Explanation: Weight of water displaced=Weight of stone in air – Weight of stone in water
=375
Volume of water displaced=Volume of stone=375/9.81*1000=0.038 m3
Density of stone= mass/volume=650/9.81*0.038=1733 kg/m³
specific gravity= Density of stone/Density of water=1.73.

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Category: Mechanical Engineering MCQs
Sub Category: Fluid Mechanics Mcqs

1308
Q:

The Bernoulli’s equation in fluid dynamics is valid for _________

A) Compressible flows B) Transient flows
C) Continuous flows D) Viscous flows
 
Answer & Explanation Answer: C) Continuous flows

Explanation: To answer this equation, we need to know the assumptions used in Bernoulli’s equation. The Bernoulli’s theorem is only valid for ideal, steady, incompressible, continuous, inviscid and irrotational flows. So, out of the options, only continuous flows fit in the assumptions.

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Category: Mechanical Engineering MCQs
Sub Category: Fluid Mechanics Mcqs

1173
Q:

When a cricket bat hits a cricket ball, impulse is applied on the_________

A) Bat B) Ball
C) Bat and ball D) No impulse is applied
 
Answer & Explanation Answer: B) Ball

Explanation: Time passes as force is applied on an object. The bat applies the force on the ball for a short period of time. By this way, we can say in accordance to the Newton’s third law forces come in pairs. So, the ball also applies a force on the bat, therefore it has an impulse applied to it.

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Category: Mechanical Engineering MCQs
Sub Category: Fluid Mechanics Mcqs

1126
Q:

The head loss at the entrance of the pipe is that at it’s exit

A) equal to B) half
C) twice D) four times
 
Answer & Explanation Answer: B) half

Explanation: Not available for this question

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Category: Mechanical Engineering MCQs
Sub Category: Fluid Mechanics Mcqs

993
Q:

Why is large reservoir used in single column manometer?

A) In order to enhance the change in level of liquid in reservoir B) In order to negate the effects of change in level due to pressure variation
C) In order to reduce the effect due to dynamic pressure variation due to motion D) None of the mentioned
 
Answer & Explanation Answer: B) In order to negate the effects of change in level due to pressure variation

Explanation: Single column manometer directly gives the pressure by measuring the height in the other limb and due to large cross sectional area of the reservoir, for any variation in pressure, the change can be neglected.

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Category: Mechanical Engineering MCQs
Sub Category: Fluid Mechanics Mcqs

887
Q:

Which of the following statement is true about vapor pressure of a liquid?

A) Vapor pressure is closely related to molecular activity and temperature of the liquid B) Vapor pressure is closely related to molecular activity but independent of the temperature of the liquid
C) Vapor pressure is not affected by molecular activity and temperature of the liquid D) Vapor pressure is not affected by molecular activity and is independent of the temperature of the liquid
 
Answer & Explanation Answer: A) Vapor pressure is closely related to molecular activity and temperature of the liquid

Explanation: The vapor pressure of a liquid at a given temperature is given by the pressure ex-erted by the saturated vapor on the liquid surface. When the vapor is saturated, an equilibrium exists between the liquid and the vapor phases. The number of molecules leaving the liquid surface is equal to the number of molecules entering the liquid surface. Hence, it is obvious that vapor pressure will be related to molecular activity and consequently to temperature. With the increase in temperature molecular activity increases as a result of which vapor pressure increases.

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Category: Mechanical Engineering MCQs
Sub Category: Fluid Mechanics Mcqs

814
Q:

In a stationary fluid, how does the local pressure of the fluid vary?

A) With depth only B) In the horizontal direction only
C) Both with depth and along horizontal direction D) Neither with depth nor along horizontal direction
 
Answer & Explanation Answer: A) With depth only

Explanation: According to Pascal’s law, the local pressure of a fluid is same in all directions. Hence, the pressure won’t vary along the x and y direction. The local pressure will increase with an increase in depth due to the extra weight of water column above that point.

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Category: Mechanical Engineering MCQs
Sub Category: Fluid Mechanics Mcqs

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