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

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 # 2

The law of conservation of energy gives us

Question # 3

Bernoulli's equation is based upon law of conversation of

Question # 4

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

Question # 5

Bernoulli's equation is applicable for

Question # 6

Ball pen functions on the principle of

Question # 7

Bernoulli's equation is important in the field of

Question # 8

When a water droplet falls through air, the net force on it is

Question # 9

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 # 10

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

Question # 11

According to Stoke's law, drag force depends on

Question # 12

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

Question # 13

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 14

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

Question # 15

The rain drop falling from the sky reach the ground with

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Sr.# Question Answer
1 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
2 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them
3 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
4 In case of streamed lined flow of liquid, the loss of energy is
A. Maximum
B. Minimum
C. Infinite
D. equal to what is in turbulent flow
5 The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is
A. very high
B. very low
C. constant
D. zero
6 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
7 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
8 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
9 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
10 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m

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