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

Matter is made up of very tiny particles called

Question # 2

A body is moving through a viscous medium eventually comes to rest because of:

Question # 3

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 4

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

Question # 5

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

Question # 6

In a normal healthy person the value of diastolic pressure is

Question # 7

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

Question # 8

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

Question # 9

Bernoulli's equation is based upon law of conservation

Question # 10

A device used to measure the speed of liquid flow is known as

Question # 11

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 12

Which of the following has the greatest coefficient of viscosity?

Question # 13

Internal friction of fluid is called

Question # 14

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 15

How much force is required to slide one layer of the liquid over the other layer is measured by

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
2 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
3 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
4 The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:
A. More, lesser
B. Lesser, more
C. Both A and B
D. Lesser, lesser
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 Density of fluid is defined as:
A. Its volume to mass ratio
B. Product of volume and mass
C. Its mass of volume ratio
D. None of these
7 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these
8 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them
9 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1
10 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above

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