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 body will move with terminal velocity when it acquires

Question # 2

Internal friction of fluid is called

Question # 3

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 4

The unit of viscosity is SI system is:

Question # 5

When a fluid is in motion, its flow can be considered as

Question # 6

When the different streamlines cannot cross each other, then this condition is known as

Question # 7

Ball pen functions on the principle of

Question # 8

The law of conservation of energy gives us

Question # 9

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 10

The smooth or steady streamline flow is known as

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

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

Question # 13

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 14

Glycerin has viscosity _____ the viscosity of water:

Question # 15

Stock's law holds for:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
2 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
3 Surface tension of water is due to
A. Inter molecular attractions
B. Inter molecular spaces
C. Inter molecular repulsion
D. None of above
4 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less
5 In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of
A. 0.1 m
B. 0.2 m
C. 0.98 m
D. Full length of the capillary tube
6 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them
7 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them
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
A. 20
B. 200
C. 2000
D. 20,000
9 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
10 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these

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