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

With the increase of temperature viscosity

Question # 2

A body is floating in a liquid. The up thrust on the body is

Question # 3

Blood pressure is measured by the instrument

Question # 4

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 5

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

Question # 6

According to slok's law, drag force depends on

Question # 7

Blood vessels can be stretch like rubber, therefore they are

Question # 8

The smooth or steady streamline flow is known as

Question # 9

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

Question # 10

Stock's law holds for:

Question # 11

Blood has a density

Question # 12

The analysis of fluid motion becomes simplified by using

Question # 13

High speed meteors rushing through air reduces to ashes because of:

Question # 14

A high concentration of red blood cells increases its viscosity from

Question # 15

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

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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 When a fluid is in motion, its flow can be considered as
A. turbulent
B. streamline
C. either or them
D. neither of them
3 The equation of continuity is
A. A1A2 = V1V2
B. A1/V1 =A2/V2
C. V1/A1=V2/A2
D. A1V1 =A2V2
4 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
5 Which of the following is a characteristic of an ideal fluid?
A. it is non-viscous
B. it is incompressible
C. it's motion is steady
D. all of the above
6 Surface tension of water is due to
A. Inter molecular attractions
B. Inter molecular spaces
C. Inter molecular repulsion
D. None of above
7 The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
8 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
9 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these
10 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity

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