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

Blood is an

Question # 2

Blood pressure is measured by the instrument

Question # 3

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

Question # 4

In a normal healthy person the value of diastolic pressure is

Question # 5

The SI unit of viscosity is

Question # 6

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

Question # 7

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

Question # 8

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 9

Ball pen functions on the principle of

Question # 10

The irregular and unsteady flow of the fluid is called

Question # 11

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 # 12

Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to

Question # 13

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 14

High speed meteors rushing through air reduces to ashes because of:

Question # 15

With increase of temperature, the viscosity of liquid and gases

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
2 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these
3 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
4 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
5 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity
6 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
7 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
8 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas
9 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
10 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force

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