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 smooth or steady stream-line flow is know as

Question # 2

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 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:

Question # 4

Fog droplets are suspended in air when their weight is balanced by:

Question # 5

N s m-2is unit of:

Question # 6

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

Question # 7

Drag force increases if speed of the object moving through the fluid:

Question # 8

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 9

The term Brownian movement refers to

Question # 10

The fluid is incompressible, if itsdensity is

Question # 11

In a normal healthy person the value of diastolic pressure is

Question # 12

Which of the following has the greatest coefficient of viscosity?

Question # 13

With the increase of temperature viscosity

Question # 14

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

Question # 15

The smooth or steady streamline flow is known as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Fire fighters have jet attached to the head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Increase the velocity of water flowing out
C. Increase the volume of water flowing per second
D. Avoid wastage of water
2 Blood is an
A. Compressible fluid
B. incompressible fluid
C. hard
D. none of them
3 At low speeds, the drag force is
A. proportional to speed
B. inversely proportional to speed
C. not simply proportional to speed
D. none of them
4 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
5 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
6 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
7 The resistance offered by a fluid to a solid moving inside it is called:
A. Drag force
B. Surface force
C. Viscosity
D. None of these
8 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
9 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
10 A flowing liquid possess
A. K.E
B. P.E
C. Pressure Energy
D. All

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