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

In Bernoulli's theorem the relation between velocity and pressure is

Question # 2

The fluid which is incompressible and non viscous is called

Question # 3

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 4

High speed meteors rushing through air reduces to ashes because of:

Question # 5

Surface tension of water is due to

Question # 6

The unit of viscosity is SI system is:

Question # 7

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

Question # 8

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

Question # 9

The irregular and unsteady flow of the fluid is called

Question # 10

The internal pressure of the blood is

Question # 11

The smooth or steady stream-line flow is know as

Question # 12

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

Question # 13

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

Question # 14

0.10 cm can be written as:

Question # 15

The law of conservation of mass gives us the

Question # 16

Bernoulli's equation is based upon law of conversation of

Question # 17

The equation of continuity
A1V1= A2V2is for the flow of

Question # 18

According to the Bernoulli's theorem the pressure velocity are

Question # 19

A flowing liquid possess

Question # 20

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

Question # 21

N s m-2is unit of:

Question # 22

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

Question # 23

The rain drop falling from the sky reach the ground with

Question # 24

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

Question # 25

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 26

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 27

At high altitude the blood oozes out of the nose and ear because

Question # 28

Fluids resist force, This property is called

Question # 29

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 30

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A body is floating in a liquid. The up thrust on the body is
A. Equal to weight of liquid displaced
B. Zero
C. Less than the weight of liquid displaced
D. Weight of body-weight of liquid displaced
2 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
A. turbulent
B. streamline
C. abrupt
D. none of them
3 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:
A. 10-16N
B. 10-14N
C. 10-12N
D. 10-10N
4 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
5 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
6 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
7 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them
8 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
9 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these
10 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

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