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

Bernoulli's equation is important in the field of

Question # 2

According to slok's law, drag force depends on

Question # 3

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

Question # 4

The direction of the streamlines is the same as the direction of the

Question # 5

Internal friction of fluid is called

Question # 6

N s m-2is unit of:

Question # 7

Bernoulli's equation is based upon law of conversation

Question # 8

The body passing a viscous medium affected by:

Question # 9

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 10

A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is

Question # 11

The smooth or steady stream-line flow is know as

Question # 12

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 13

The resistance offered by a fluid to a solid moving inside it is called:

Question # 14

The mass of fluid passing through any cross-section per unit time is called

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Blood is an
A. Compressible fluid
B. incompressible fluid
C. hard
D. none of them
2 A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is
A. 50 m/s
B. 20 m/s
C. 40 cm/s
D. 5 cm/s
3 At low speeds, the drag force is
A. proportional to speed
B. inversely proportional to speed
C. not simply proportional to speed
D. none of them
4 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
5 The equation of continuity
A1V1= A2V2is for the flow of
A. an ideal fluid
B. an incompressible fluid
C. a non visconcous fluid
D. all of the above
6 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
7 Substances that do not flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
8 The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
9 A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that
A. water contains hydrogen atoms, air does not
B. water molecules are smaller than molecules in the air
C. water molecules are smaller than molecules in the air
D. surface tension of the water prevents it from
10 The property of fluids due to which they resist their own flow is called:
A. Drag force
B. Surface tension
C. Viscosity
D. None of these

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