ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

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

Question # 2

According to Stoke's law, drag force depends on

Question # 3

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

Question # 4

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

Question # 5

Viscosity is defined as

Question # 6

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

Question # 7

When a fluid is in motion, its flow can be considered as

Question # 8

Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?

Question # 9

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

Question # 10

The flow of an ideal fluid is

Question # 11

Bernoulli's equation is applicable for

Question # 12

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

Question # 13

Surface tension of water is reduced by adding

Question # 14

The un-steady streamline flow is called

Question # 15

Which of the following options correctly states the equation of continuity for an ideal fluid?

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:
A. Starts increasing
B. Starts decreasing
C. Becomes constant
D. Is called escape velocity
2 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
3 In a normal healthy person the value of systolic pressure is
A. 75 torr
B. 80 torr
C. 120 torr
D. all of them
4 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
5 The internal pressure of the blood is
A. less than the external atmospheric pressure
B. greater than the external atmospheric pressure
C. equal to the external atmosphericpressure
D. none of them
6 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
7 When each particle of the fluid moves along a smoth path, this path is known as
A. straight path
B. smooth path
C. haphazard path
D. steamline
8 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
9 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
10 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

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