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

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow

Question # 2

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

Question # 3

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

Question # 4

The dimensions of viscosity are:

Question # 5

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

Question # 6

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 7

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

Question # 8

Internal friction of fluid is called

Question # 9

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

Question # 10

Viscosity is defined as

Question # 11

The application of Bernoulli's equation is

Question # 12

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

Question # 13

According to slok's law, drag force depends on

Question # 14

The resistance offered by a fluid to a solid moving inside it is called:

Question # 15

When weight of an object falling freely becomes equal to the drag force, then the body will move with

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called
A. incompressible
B. compressible
C. viscous
D. non viscous
3 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less
4 A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is
A. 125 J
B. 90 J
C. 160 J
D. 85 J
5 If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term
A. P
B. 1/2 fv2
C. pgh
D. none of them
6 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
7 Fog droplets are suspended in air when their weight is balanced by:
A. Force of gravity
B. Upward trust due to air
C. Surface tension
D. None of these
8 The equation of continuity is
A. A1A2 = V1V2
B. A1/V1 =A2/V2
C. V1/A1=V2/A2
D. A1V1 =A2V2
9 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
10 The analysis of fluid motion becomes simplified by using
A. law of conservation
B. law of conservation of energy
C. both of them
D. none of them

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