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 tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 2

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 3

The application of Bernoulli's equation is

Question # 4

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

During the steady flow, different streamlines

Question # 9

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 10

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

Question # 11

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

Question # 12

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

Question # 13

The blood pressure of a person

Question # 14

The velocity of falling raindrops attains limited value because of

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
2 Bernoulli's equation is important in the field of
A. Electrical circuit
B. Magnetism
C. Photoelectric effect
D. Flow of fluids
3 The property of fluids due to which they resist their own flow is called:
A. Drag force
B. Surface tension
C. Viscosity
D. None of these
4 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
A. 1.3 m/s
B. 1.6 m/s
C. 1.9 m/s
D. 2.2 m/s
5 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
6 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
7 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
8 In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is
A. Independent of h
B. Proportional to h1/2
C. Proportional to h
D. Proportional to h2
9 The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the
A. orifices
B. efflux
C. fluid
D. none of them
10 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b

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