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

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

Question # 2

Bernoulli's equation is important in the field of

Question # 3

The electrical forces between the molecules of a liquid are

Question # 4

When the speed of a body in a fluid increases then the drag force

Question # 5

The un-steady streamline flow is called

Question # 6

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

Question # 7

Drag force increases if speed of the object moving through the fluid:

Question # 8

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 # 9

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

Question # 10

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

Question # 11

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

Question # 12

0.10 cm can be written as:

Question # 13

What are the SI base units of the coefficient of viscosity

Question # 14

Matter is made up of very tiny particles called

Question # 15

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

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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 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them
3 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these
4 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
5 In a normal healthy person the value of diastolic pressure is
A. 75 - 80 torr
B. 100 torr
C. 120 torr
D. none of them
6 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
7 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
8 A body is moving through a viscous medium eventually comes to rest because of:
A. Force of gravity
B. Force of friction
C. Its weight
D. Both A and C
9 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
10 One torr is equal to
A. 13.33 N/m2
B. 760 N/m2
C. 760 mm Hg
D. 133.3 N/m2

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