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 _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 2

Fluid friction is _____ the friction between two solid surfaces:

Question # 3

One torr is equal to

Question # 4

The term Brownian movement refers to

Question # 5

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

Question # 6

Bernoulli's equation is based upon law of conversation

Question # 7

The body passing a viscous medium affected by:

Question # 8

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

Question # 9

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

Question # 10

When each particle of the fluid moves along a smoth path, this path is known as

Question # 11

Surface tension of water is reduced by adding

Question # 12

Unit of viscosity is:

Question # 13

The property of fluids due to which they resist their own flow is called:

Question # 14

According to the Bernoulli's theorem the pressure velocity are

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is
A. 50 m/s
B. 20 m/s
C. 40 cm/s
D. 5 cm/s
2 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
A. P
B. 1/2 fv2
C. pgh
D. none of them
3 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
4 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
5 The irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
6 The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called
A. constant rate
B. volume rate
C. flow rate
D. steady rate
7 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles
8 The internal pressure of the blood is
A. less than the external atmospheric pressure
B. greater than the external atmospheric pressure
C. equal to the external atmosphericpressure
D. none of them
9 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
10 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them

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