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

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 2

According to slok's law, drag force depends on

Question # 3

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 4

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 5

Fluid friction is _____ the friction between two solid surfaces:

Question # 6

With increase of temperature, the viscosity of liquid and gases

Question # 7

In a normal healthy person the value of diastolic pressure is

Question # 8

What are the SI base units of the coefficient of viscosity

Question # 9

Where the streamlines are very far apart from each other, the pressure will be

Question # 10

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

Question # 11

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 12

The property of fluids due to which they resist their own flow is called:

Question # 13

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow

Question # 14

Surface tension of water is due to

Question # 15

In case of streamed lined flow of liquid, the loss of energy is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
2 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
3 According to Stoke's law, drag force depends on
A. Initial velocity
B. Final velocity
C. Terminal velocity
D. Instantaneous velocity
4 Viscosity is defined as
A. the friction between fluid and its container's walls
B. the internal friction between two layers of fluid
C. the resistance to flow a fluid experiences
D. the extent to which outside factors effect the fluid's flow
5 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
6 Which of the following options correctly states the equation of continuity for an ideal fluid?
A. A1A2= V1V2
B. A1/A2= V2/V1
C. A1/A2= V1/V2
D. none of the above
7 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
8 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
9 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
10 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these

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