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 electrical forces between the molecules of a liquid are

Question # 2

The internal pressure of the blood is

Question # 3

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Question # 4

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

Question # 5

Surface tension of water is due to

Question # 6

Ball pen functions on the principle of

Question # 7

Unit of viscosity is:

Question # 8

According to Stoke's law, drag force depends on

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

Surface tension of water is reduced by adding

Question # 11

The SI unit of viscosity is

Question # 12

During the steady flow, different streamlines

Question # 13

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

Question # 14

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

Question # 15

Liquids and gasses have

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
2 The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2
A. 20
B. 200
C. 2000
D. 20,000
3 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
4 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
5 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
6 The body passing a viscous medium affected by:
A. One force only
B. Two forces only
C. Four forces
D. None of these
7 When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called
A. incompressible
B. compressible
C. viscous
D. non viscous
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 Which of the following is a characteristic of an ideal fluid?
A. it is non-viscous
B. it is incompressible
C. it's motion is steady
D. all of the above
10 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them

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