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

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

Question # 2

The blood pressure of a person

Question # 3

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

Question # 4

At low speeds, the drag force is

Question # 5

The unit of viscosity is SI system is:

Question # 6

0.10 cm can be written as:

Question # 7

The electrical forces between the molecules of a liquid are

Question # 8

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

Question # 9

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

Question # 10

The mass of fluid passing through any cross-section per unit time is called

Question # 11

Liquids and gasses have

Question # 12

Where the streamlines are very close to each other, the pressure will be

Question # 13

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 14

The resistance offered by a fluid to a solid moving inside it is called:

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C
3 The equation of continuity
A1V1= A2V2is for the flow of
A. an ideal fluid
B. an incompressible fluid
C. a non visconcous fluid
D. all of the above
4 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
5 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
6 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
7 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less
8 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
A. 1/4 times
B. 4 times
C. Twice
D. 1/2 of 8 cm diameter pipe
9 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
10 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them

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