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

Which of the following has the greatest coefficient of viscosity?

Question # 2

The smooth or steady streamline flow is known as

Question # 3

The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is

Question # 4

In case of streamed lined flow of liquid, the loss of energy is

Question # 5

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

Question # 6

The fluid is incompressible, if itsdensity is

Question # 7

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

Question # 8

A device used to measure the speed of liquid flow is known as

Question # 9

The velocity of falling raindrops attains limited value because of

Question # 10

A body is floating in a liquid. The up thrust on the body is

Question # 11

Fluid friction is _____ the friction between two solid surfaces:

Question # 12

The electrical forces between the molecules of a liquid are

Question # 13

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 14

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

Question # 15

Bernoulli's equation is important in the field of

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Which of the following options states the names of fluids in the order of increasing viscosity?
A. mercury, motor oil, methanol
B. methanol, mercury, motor oil
C. motor oil, mercury, methanol
D. methanol, motor oil, mercury
2 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles
3 In deriving the Bernoulli's equation, we assume that the fluid is
A. incompressible
B. no viscous
C. flows in a steady manner
D. all of them
4 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
5 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
6 The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the
A. orifices
B. efflux
C. fluid
D. none of them
7 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
8 The body passing a viscous medium affected by:
A. One force only
B. Two forces only
C. Four forces
D. None of these
9 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1
10 In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of
A. 0.1 m
B. 0.2 m
C. 0.98 m
D. Full length of the capillary tube

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