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

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 2

The direction of the streamlines is the same as the direction of the

Question # 3

The smooth or steady streamline flow is known as

Question # 4

An object moving through a fluid experiences a retarding force called a

Question # 5

Liquids and gasses have

Question # 6

Surface tension of water is reduced by adding

Question # 7

Bernoulli's equation is important in the field of

Question # 8

The analysis of fluid motion becomes simplified by using

Question # 9

N s m-2is unit of:

Question # 10

How much force is required to slide one layer of the liquid over the other layer is measured by

Question # 11

The velocity of falling raindrop attains limited value because of

Question # 12

Matter is made up of very tiny particles called

Question # 13

The blood pressure of a person

Question # 14

Surface tension of water is due to

Question # 15

The law of conservation of energy gives us

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
4 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
5 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
6 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these
7 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
8 If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be
A. turbulent
B. streamline
C. abrupt
D. none of them
9 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
10 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases

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