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

Bernoulli's equation is based upon law of conversation of

Question # 2

Blood is an

Question # 3

Substances that do not flow easily have

Question # 4

With the increase of temperature viscosity

Question # 5

The application of Bernoulli's equation is

Question # 6

The law of conservation of mass gives us the

Question # 7

When the speed of a body in a fluid increases then the drag force

Question # 8

The velocity of falling raindrops attains limited value because of

Question # 9

The equation of continuity
A1V1= A2V2is for the flow of

Question # 10

The irregular and unsteady flow of the fluid is called

Question # 11

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 # 12

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

Question # 13

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

Question # 14

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 15

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 In a normal healthy person the value of systolic pressure is
A. 75 torr
B. 80 torr
C. 120 torr
D. all of them
2 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
3 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
4 Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Avoid wastage of water
C. Increase the velocity of water flowing out
D. Increase the volume of water flowing per second
5 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
6 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force
7 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
8 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
9 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
10 The unit of viscosity is SI system is:
A. Kg-1m sec-1
B. Kgm-1 sec-1
C. Kg-1m-1 sec
D. None of these

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