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

With increase of temperature, the viscosity of liquid and gases

Question # 2

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

Question # 3

Viscosity is defined as

Question # 4

Drag force increases if speed of the object moving through the fluid:

Question # 5

According to Stoke's law, drag force depends on

Question # 6

Liquids and gasses have

Question # 7

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Question # 8

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

Question # 9

Surface tension of water is due to

Question # 10

What are the SI base units of the coefficient of viscosity

Question # 11

Internal friction of fluid is called

Question # 12

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 # 13

According to slok's law, drag force depends on

Question # 14

During the steady flow, different streamlines

Question # 15

A person standing near the track of a fast moving train has tendency to fall towards it because of

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The law of conservation of mass gives us the
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
2 An object moving through a fluid experiences a retarding force called a
A. frictional force
B. terminal force
C. opposing force
D. drag force
3 In a normal healthy person the value of systolic pressure is
A. 75 torr
B. 80 torr
C. 120 torr
D. all of them
4 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
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
5 The terminal velocity of a small size spherical body of radius R moving in a fluid varies as
A. R
B. R2
C. 1/R
D. (1/R)2
6 The rain drop falling from the sky reach the ground with
A. Constant terminal velocity
B. Constant gravitational acceleration
C. Variable acceleration
D. acceleration greater than g
7 The term Brownian movement refers to
A. irregular motions of small particles suspended in a fluid
B. convection currents in a liquid or gas
C. convection currents in a gas but not in a liquid
D. the stretching of a body beyond its elastic limit
8 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
9 When weight of an object falling freely becomes equal to the drag force, then the body will move with
A. increasing speed
B. decreasing speed
C. constant speed
D. none of them
10 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All

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