ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

Above a certain velocity of a fluid is called

Question # 2

Surface tension of water is due to

Question # 3

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

Question # 4

Which of the following options correctly states the equation of continuity for an ideal fluid?

Question # 5

Viscosity is defined as

Question # 6

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 7

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

Question # 8

The velocity of falling raindrop attains limited value because of

Question # 9

The blood pressure of a person

Question # 10

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

Question # 11

According to slok's law, drag force depends on

Question # 12

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

Question # 13

The velocity of falling raindrops attains limited value because of

Question # 14

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

Question # 15

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
2 Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?
A. fluid B
B. fluid A
C. both take the same time
D. not possible to determine from given information
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 The maximum drag force on a falling sphere is 9.8 N, it weight is
A. 1 N
B. 9.8 N
C. 4.9 N
D. Cannot be calculated
5 Surface tension of water is due to
A. Inter molecular attractions
B. Inter molecular spaces
C. Inter molecular repulsion
D. None of above
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 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
8 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
9 When each particle of the fluid moves along a smoth path, this path is known as
A. straight path
B. smooth path
C. haphazard path
D. steamline
10 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

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