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

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

Question # 2

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 3

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

Question # 4

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

Question # 5

In a normal healthy person the value of diastolic pressure is

Question # 6

When the speed of a body in a fluid increases then the drag force

Question # 7

Which of the following is a characteristic of an ideal fluid?

Question # 8

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

Question # 9

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 # 10

N s m-2is unit of:

Question # 11

Viscosity is defined as

Question # 12

At the starting point of the free fall motion of an object, its acceleration will be

Question # 13

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

Question # 14

During the steady flow, different streamlines

Question # 15

The electrical forces between the molecules of a liquid are

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Bernoulli's equation is based upon law of conservation
A. Mass
B. Momentum
C. Energy
D. None of these
2 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
3 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
4 A body is moving through a viscous medium eventually comes to rest because of:
A. Force of gravity
B. Force of friction
C. Its weight
D. Both A and C
5 A flowing liquid possess
A. K.E
B. P.E
C. Pressure Energy
D. All
6 Blood pressure is measured in torr. Which of the following units could belong to torr?
A. N m-1
B. N m-2
C. N m
D. N-1m-2
7 The blood pressure of a person
A. decrease with age
B. increase with age
C. has no effect with age
D. none of them
8 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
9 If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity
A. v/A = constant
B. A/v = constant
C. Av = constant
D. None
10 Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Avoid wastage of water
C. Increase the velocity of water flowing out
D. Increase the volume of water flowing per second

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