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

The law of conservation of energy gives us

Question # 2

0.10 cm can be written as:

Question # 3

The SI unit of viscosity is

Question # 4

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

Question # 5

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 6

The fluid which is incompressible and non viscous is called

Question # 7

Which of the following is a characteristic of an ideal fluid?

Question # 8

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 9

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 10

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 11

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

Question # 12

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 # 13

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

Question # 14

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 # 15

The fluid is incompressible, if itsdensity is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?
A. potential energy
B. pressure energy
C. strain energy
D. (a) and (b) only
2 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
3 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
4 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
5 Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Avoid wastage of water
C. Increase the velocity of water flowing out
D. Increase the volume of water flowing per second
6 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
7 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
8 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
9 High speed meteors rushing through air reduces to ashes because of:
A. Force of gravity
B. High resistance of air
C. Drag force
D. None of these
10 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant

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