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 study of fluid in motion basically involves law of conservation of:

Question # 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

Question # 3

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 # 4

A body is moving through a viscous medium eventually comes to rest because of:

Question # 5

Pressure exerted by a gas on the walls of its container in due to

Question # 6

The analysis of fluid motion becomes simplified by using

Question # 7

The velocity of falling raindrop attains limited value because of

Question # 8

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

Question # 9

Surface tension of water is due to

Question # 10

0.10 cm can be written as:

Question # 11

Fog droplets are suspended in air when their weight is balanced by:

Question # 12

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

Question # 13

N s m-2is unit of:

Question # 14

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

Question # 15

The smooth or steady streamline flow is known as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
2 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
3 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
4 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
5 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
6 At the starting point of the free fall motion of an object, its acceleration will be
A. maximum
B. minimum
C. zero
D. none of them
7 The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is
A. stethoscope
B. thermometer
C. manometer
D. barometer
8 A body is moving through a viscous medium eventually comes to rest because of:
A. Force of gravity
B. Force of friction
C. Its weight
D. Both A and C
9 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas
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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