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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Fluid Mechanics for Mechanical Engineering  >  Test: Dynamic of Fluid Flow - 1 - Mechanical Engineering MCQ

Test: Dynamic of Fluid Flow - 1 - Mechanical Engineering MCQ


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10 Questions MCQ Test Fluid Mechanics for Mechanical Engineering - Test: Dynamic of Fluid Flow - 1

Test: Dynamic of Fluid Flow - 1 for Mechanical Engineering 2025 is part of Fluid Mechanics for Mechanical Engineering preparation. The Test: Dynamic of Fluid Flow - 1 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Dynamic of Fluid Flow - 1 MCQs are made for Mechanical Engineering 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Dynamic of Fluid Flow - 1 below.
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Test: Dynamic of Fluid Flow - 1 - Question 1
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Which of the following pairs are correctly matched?
1. Piezometric head : Sum of datum head and pressure head
2. Dynamic head : Sum of datum head and velocity head
3. Stagnation head : Sum of piezometric head and velocity head
4. Total head : Sum of piezometric head and dynamic head

Test: Dynamic of Fluid Flow - 1 - Question 2
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 Under which of the following conditions will the equation  = constant  will be valid in the whole flow field?

1. Flow is rotational
2. Flow is irrotational
3. Flow is incompressible
4. Flow is steady
5. Flow is laminar

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Test: Dynamic of Fluid Flow - 1 - Question 3
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Match List-I (Phenomenon) with List-ll (Equation/concept involved) and select the correct answer using the codes given below the lists:

List-I
A. Force developed in a bend
B. Pitot-static tube
C. Flow through smaller passage produces higher velocity
D. Vortex flow

List-ll
1. Continuity equation
2. Energy equation
3. Momentum equation
4. Moment of momentum equation

Test: Dynamic of Fluid Flow - 1 - Question 4
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The Bernoulli’s equation is written with usual  notation as constant . In this equation, each of the terms represents
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Test: Dynamic of Fluid Flow - 1 - Question 5
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The difference between the total head line and the hydraulic grade line represents
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Test: Dynamic of Fluid Flow - 1 - Question 6
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 The dimension of kinetic energy correction factor α is 
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Kinetic energy correction factor is basically defined as the ratio of kinetic energy of the flow per second based on actual velocity across a section to the kinetic energy of the flow per second based on average velocity across the same section. 
Kinetic energy correction factor will be displayed by the symbol α and will be written mathematically as mentioned here. 
Kinetic energy correction factor, α = (K.E. per second based on actual velocity) / (K.E. per second based on average velocity)

Hence, the dimensions are  M0L0 T0

Test: Dynamic of Fluid Flow - 1 - Question 7
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The kinetic energy correction factor a is defined as α =

where ,

V - average velocity in the cross-section
Test: Dynamic of Fluid Flow - 1 - Question 8
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A 2-D conduit has the velocity distributions shown in figure below. What is kinetic energy correction factor? (Consider unit width of conduit)
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Discharge,

Average velocity,

Test: Dynamic of Fluid Flow - 1 - Question 9
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A pitot-static tube is used to measure the velocity of water in a pipe. The stagnation pressure head is 6 m and static pressure head is 5 m. The velocity of flow is [Take coefficient of velocity as 0.98]
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Test: Dynamic of Fluid Flow - 1 - Question 10
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A sub-marine moves horizontally in sea and has its axis 15 m below the surface of water. A pitot- tube properly placed just in front of the sub-marine and along its axis is connected to the two limbs of a U-tube manometer containing mercury. The difference of mercury level is found to be 170 mm. What is the speed of the sub-marine knowing that the specific gravity of mercury is 13.6 and that of sea-water is 1.026 with respect to fresh water?
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