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

Machine parts are jammed due to:

Question # 2

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 # 3

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

Question # 4

The equation of continuity is

Question # 5

At high altitude the blood oozes out of the nose and ear because

Question # 6

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

Question # 7

A massive object falls through a fluid:

Question # 8

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

Question # 9

During the steady flow, different streamlines

Question # 10

Which of the following has the greatest coefficient of viscosity?

Question # 11

The analysis of fluid motion becomes simplified by using

Question # 12

Glycerin has viscosity _____ the viscosity of water:

Question # 13

What is another name for laminar flow?

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be
A. turbulent
B. streamline
C. abrupt
D. none of them
2 A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow
A. 1.3 m/s
B. 1.6 m/s
C. 1.9 m/s
D. 2.2 m/s
3 At the starting point of the free fall motion of an object, its acceleration will be
A. maximum
B. minimum
C. zero
D. none of them
4 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
5 A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that
A. water contains hydrogen atoms, air does not
B. water molecules are smaller than molecules in the air
C. water molecules are smaller than molecules in the air
D. surface tension of the water prevents it from
6 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
7 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
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 irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
10 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion

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