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 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

Question # 2

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

Question # 3

Viscosity is defined as

Question # 4

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 5

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

Question # 6

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

Question # 7

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 # 8

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 9

Which of the following is a characteristic of an ideal fluid?

Question # 10

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

Question # 11

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 12

Bernoulli's equation is based upon law of conversation

Question # 13

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

Question # 14

With the increase of temperature viscosity

Question # 15

Blood is an

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
2 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
3 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes
4 The irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
5 Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?
A. potential energy
B. pressure energy
C. strain energy
D. (a) and (b) only
6 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
7 When the different streamlines cannot cross each other, then this condition is known as
A. continuity condition
B. turbulent flow condition
C. steady flow condition
D. none of them
8 The velocity of falling raindrop attains limited value because of
A. Up trust of air
B. Viscous force exerted by air
C. Surface tension effect
D. Air currents atmosphere
9 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these
10 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small

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