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

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

Question # 2

The velocity of falling raindrop attains limited value because of

Question # 3

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 4

Liquids and gasses have

Question # 5

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

Question # 6

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 # 7

The drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:

Question # 8

The fluid is incompressible, if itsdensity is

Question # 9

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 10

Stock's law holds for:

Question # 11

According to Stoke's law, drag force depends on

Question # 12

Which of the following has the greatest coefficient of viscosity?

Question # 13

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?

Question # 14

The analysis of fluid motion becomes simplified by using

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The blood pressure of a person
A. decrease with age
B. increase with age
C. has no effect with age
D. none of them
2 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
3 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
4 At low speeds, the drag force is
A. proportional to speed
B. inversely proportional to speed
C. not simply proportional to speed
D. none of them
5 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
6 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
7 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
8 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
9 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
10 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter

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