ECAT Pre General Science Physics Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 6 Fluid Dynamics

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ECAT Pre General Science Physics Chapter 6 Fluid Dynamics

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Question # 1

A massive object falls through a fluid:

Question # 2

Machine parts are jammed due to:

Question # 3

The SI unit of viscosity is

Question # 4

The flow of an ideal fluid is

Question # 5

The density of blood is nearly equal to that of

Question # 6

Fire fighters have jet attached to the head of their water pipes in order to

Question # 7

Bernoulli's equation is applicable for

Question # 8

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

Question # 9

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 # 10

The law of conservation of energy gives us

Question # 11

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

Question # 12

Where the streamlines are very close to each other, the pressure will be

Question # 13

One torr is equal to

Question # 14

At low speeds, the drag force is

Question # 15

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

Question # 16

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

Question # 17

The unit of viscosity is SI system is:

Question # 18

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?

Question # 19

The mass of fluid passing through any cross-section per unit time is called

Question # 20

Blood pressure is measured by the instrument

Question # 21

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 22

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

Question # 23

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

Question # 24

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 # 25

When the different streamlines cannot cross each other, then this condition is known as

Question # 26

The value for systolic blood pressure for a normal healthy person is

Question # 27

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 # 28

Rate of flow can be expressed in

Question # 29

According to Stoke's law, drag force depends on

Question # 30

The internal pressure of the blood is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 According to the Bernoulli's theorem the pressure velocity are
A. equal to each other
B. proportional to each other
C. inversely proportional to each other
D. none of them
2 In a normal healthy person the value of systolic pressure is
A. 75 torr
B. 80 torr
C. 120 torr
D. all 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 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
5 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
6 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
7 The irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
8 Liquids and gasses have
A. zero viscosity
B. non-zero viscosity
C. very large viscosity
D. very small viscosity
9 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
10 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion

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