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

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 2

N s m-2is unit of:

Question # 3

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 # 4

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

Question # 5

When the speed of a body in a fluid increases then the drag force

Question # 6

How much force is required to slide one layer of the liquid over the other layer is measured by

Question # 7

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

Question # 8

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

Question # 9

Fluids resist force, This property is called

Question # 10

Above a certain velocity of a fluid is called

Question # 11

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

Question # 12

Matter is made up of very tiny particles called

Question # 13

According to slok's law, drag force depends on

Question # 14

The electrical forces between the molecules of a liquid are

Question # 15

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
2 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them
3 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above
4 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
5 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
6 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
7 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
8 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these
9 Glycerin has viscosity _____ the viscosity of water:
A. More than
B. Equal to
C. Less than
D. None of these
10 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
A. orifices
B. efflux
C. fluid
D. none of them

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