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

In deriving the Bernoulli's equation, we assume that the fluid is

Question # 2

Above a certain velocity of a fluid is called

Question # 3

The law of conservation of mass gives us the

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

When the different streamlines cannot cross each other, then this condition is known as

Question # 8

Stock's law holds for:

Question # 9

Which of the following is a characteristic of an ideal fluid?

Question # 10

Surface tension of water is due to

Question # 11

Blood has a density

Question # 12

Liquids and gasses have

Question # 13

The velocity of falling raindrop attains limited value because of

Question # 14

The term Brownian movement refers to

Question # 15

Unit of viscosity is:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
2 In deriving the Bernoulli's equation, we assume that the fluid is
A. incompressible
B. no viscous
C. flows in a steady manner
D. all of them
3 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
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 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
6 According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
A. low
B. zero
C. high
D. all of them
7 The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is
A. stethoscope
B. thermometer
C. manometer
D. barometer
8 The property of fluids due to which they resist their own flow is called:
A. Drag force
B. Surface tension
C. Viscosity
D. None of these
9 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above
10 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity

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