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

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

Question # 2

A high concentration of red blood cells increases its viscosity from

Question # 3

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

Question # 4

Pressure exerted by a gas on the walls of its container in due to

Question # 5

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 6

Where the streamlines are very far apart from each other, the pressure will be

Question # 7

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 # 8

In Bernoulli's theorem the relation between velocity and pressure is

Question # 9

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 10

In case of streamed lined flow of liquid, the loss of energy is

Question # 11

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 12

During the steady flow, different streamlines

Question # 13

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 14

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 15

Blood vessels can be stretch like rubber, therefore they are

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The flow of an ideal fluid is
A. streamline flow
B. incompressible flow
C. non-viscous
D. all of the above
2 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
3 What are the SI base units of the coefficient of viscosity
A. Kg m s-2
B. kgm2 s-2
C. Kg m s-1
D. kg m-1s-1
4 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C
5 According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
A. low
B. zero
C. high
D. all of them
6 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
7 0.10 cm can be written as:
A. 1.0 x 10-2m
B. 1.0 x 10-3cm
C. 1.0 x 10-4cm
D. 1. x 10-4m
8 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
9 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
10 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

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