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

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 2

The pressure will be low where the speed of the fluid is

Question # 3

When the different streamlines cannot cross each other, then this condition is known as

Question # 4

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

Question # 5

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

Question # 6

The equation of continuity
A1V1= A2V2is for the flow of

Question # 7

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

Question # 8

Fluids resist force, This property is called

Question # 9

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 10

Blood vessels can be stretch like rubber, therefore they are

Question # 11

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

Question # 12

According to Stoke's law, drag force depends on

Question # 13

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 14

The irregular and unsteady flow of the fluid is called

Question # 15

The equation of continuity is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
4 The equation of continuity is
A. A1A2 = V1V2
B. A1/V1 =A2/V2
C. V1/A1=V2/A2
D. A1V1 =A2V2
5 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
6 The velocity of falling raindrop attains limited value because of
A. Up trust of air
B. Viscous force exerted by air
C. Surface tension effect
D. Air currents atmosphere
7 The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:
A. More, lesser
B. Lesser, more
C. Both A and B
D. Lesser, lesser
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 When weight of an object falling freely becomes equal to the drag force, then the body will move with
A. increasing speed
B. decreasing speed
C. constant speed
D. none of them
10 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity

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