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

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

Question # 2

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 3

The dimensions of viscosity are:

Question # 4

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

Question # 5

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 6

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

Question # 7

Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to

Question # 8

The smooth or steady stream-line flow is know as

Question # 9

When each particle of the fluid moves along a smoth path, this path is known as

Question # 10

Bernoulli's equation is based upon law of conversation

Question # 11

At the starting point of the free fall motion of an object, its acceleration will be

Question # 12

A device used to measure the speed of liquid flow is known as

Question # 13

Liquids and gasses have

Question # 14

The body passing a viscous medium affected by:

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
2 The terminal velocity of a small size spherical body of radius R moving in a fluid varies as
A. R
B. R2
C. 1/R
D. (1/R)2
3 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
4 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above
5 A person standing near the track of a fast moving train has tendency to fall towards it because of
A. Vibration due to motion of train
B. Gravitation force of attraction between person and trains
C. The high speed of train
D. Some other effect
6 In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called
A. Quadratic equation
B. Equation of discontinuity
C. Equation of continuity
D. None of the above
7 A body is floating in a liquid. The up thrust on the body is
A. Equal to weight of liquid displaced
B. Zero
C. Less than the weight of liquid displaced
D. Weight of body-weight of liquid displaced
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 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
10 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them

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