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

The un-steady streamline flow is called

Question # 2

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

Question # 3

The resistance offered by a fluid to a solid moving inside it is called:

Question # 4

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

Question # 5

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

Question # 6

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

Question # 7

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 8

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

Question # 9

Fog droplets are suspended in air when their weight is balanced by:

Question # 10

The velocity of falling raindrops attains limited value because of

Question # 11

What are the SI base units of the coefficient of viscosity

Question # 12

The density of blood is nearly equal to that of

Question # 13

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

Question # 14

Blood vessels can be stretch like rubber, therefore they are

Question # 15

Surface tension of water is reduced by adding

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
2 The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is
A. stethoscope
B. thermometer
C. manometer
D. barometer
3 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
4 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
5 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
6 A person standing near the track of a fast moving train has tendency to fall towards it because of
A. Vibration due to motion of train
B. Gravitation force of attraction between person and trains
C. The high speed of train
D. Some other effect
7 The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called
A. constant rate
B. volume rate
C. flow rate
D. steady rate
8 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them
9 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these
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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