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

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

Question # 2

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

Question # 3

Surface tension of water is due to

Question # 4

Bernoulli's equation is important in the field of

Question # 5

The density of blood is nearly equal to that of

Question # 6

A person standing near the track of a fast moving train has tendency to fall towards it because of

Question # 7

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 # 8

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

Question # 9

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 # 10

When each particle of the fluid moves along a smoth path, this path is known as

Question # 11

Unit of viscosity is:

Question # 12

Density of fluid is defined as:

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
2 The internal pressure of the blood is
A. less than the external atmospheric pressure
B. greater than the external atmospheric pressure
C. equal to the external atmosphericpressure
D. none of them
3 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
4 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
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 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above
7 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
8 The equation of continuity
A1V1= A2V2is for the flow of
A. an ideal fluid
B. an incompressible fluid
C. a non visconcous fluid
D. all of the above
9 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
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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