ECAT Pre Engineering Physics Chapter 6 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Question # 1

The pressure will be low where the speed of the fluid is

Question # 2

The body will move with terminal velocity when it acquires

Question # 3

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

Question # 4

Stock's law holds for:

Question # 5

Substances that flow easily have

Question # 6

Blood pressure is measured by the instrument

Question # 7

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 8

Bernoulli's equation is based upon law of conversation

Question # 9

Surface tension of water is reduced by adding

Question # 10

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 11

The law of conservation of energy gives us

Question # 12

An object moving through a fluid experiences a retarding force called a

Question # 13

N s m-2is unit of:

Question # 14

If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be

Question # 15

The value for systolic blood pressure for a normal healthy person is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force
2 According to slok's law, drag force depends on
A. Radius of the spherical body
B. Terminal velocity of body
C. Coefficient of viscosity
D. All of above
3 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them
4 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
5 Which of the following options correctly states the equation of continuity for an ideal fluid?
A. A1A2= V1V2
B. A1/A2= V2/V1
C. A1/A2= V1/V2
D. none of the above
6 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
7 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
8 Bernoulli's equation is important in the field of
A. Electrical circuit
B. Magnetism
C. Photoelectric effect
D. Flow of fluids
9 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
10 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them

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