ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

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

Question # 2

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

Question # 3

Bernoulli's equation is applicable for

Question # 4

The law of conservation of mass gives us the

Question # 5

Substances that do not flow easily have

Question # 6

Fluid friction is _____ the friction between two solid surfaces:

Question # 7

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 # 8

The equation of continuity
A1V1= A2V2is for the flow of

Question # 9

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

Question # 10

Ball pen functions on the principle of

Question # 11

Bernoulli's equation is based upon law of conservation

Question # 12

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

Question # 13

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

Question # 14

Blood pressure is measured by the instrument

Question # 15

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

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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 Blood is an
A. Compressible fluid
B. incompressible fluid
C. hard
D. none of them
3 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
4 The effect of friction between different layers of a flowing fluid is described in terms of
A. motion of fluid
B. nature of fluid
C. colour of fluid
D. viscosity of fluid
5 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
6 Surface tension of water is due to
A. Inter molecular attractions
B. Inter molecular spaces
C. Inter molecular repulsion
D. None of above
7 If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe
A. increases
B. decreases
C. becomes zero
D. is conserved
8 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
9 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
10 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less

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