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 body will move with terminal velocity when it acquires

Question # 2

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

Question # 3

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 4

The law of conservation of mass gives us the

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Substances that do not flow easily have

Question # 9

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

Question # 10

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

Question # 11

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 12

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

Question # 13

The density of water is 103kg/m3. The water pressure on a submarine is 2.0 x 107N/m2. The depth of the submarine below the surface of the water, in maters, is approximately

Question # 14

Bernoulli's equation is applicable for

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
2 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases
3 Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is
A. 1/4 times
B. 4 times
C. Twice
D. 1/2 of 8 cm diameter pipe
4 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
5 The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:
A. More, lesser
B. Lesser, more
C. Both A and B
D. Lesser, lesser
6 The equation of continuity is
A. A1A2 = V1V2
B. A1/V1 =A2/V2
C. V1/A1=V2/A2
D. A1V1 =A2V2
7 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
8 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
9 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
10 A high concentration of red blood cells increases its viscosity from
A. 3 - 5 times that of mercury
B. 5 - 8 times that of mercury
C. 3 - 5 times that of water
D. 5 - 8 times that of water

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