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

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 2

Which of the following options correctly states the equation of continuity for an ideal fluid?

Question # 3

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 # 4

The internal pressure of the blood is

Question # 5

What are the SI base units of the coefficient of viscosity

Question # 6

Machine parts are jammed due to:

Question # 7

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

Question # 8

Blood pressure is measured by the instrument

Question # 9

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

Question # 10

The resistance offered by a fluid to a solid moving inside it is called:

Question # 11

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 12

A body is floating in a liquid. The up thrust on the body is

Question # 13

The fluid which is incompressible and non viscous is called

Question # 14

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

Question # 15

The fluid is incompressible, if itsdensity is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
2 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
3 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them
4 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:
A. Not affected due to its size
B. Twice that of small size ball
C. Four times that of small size ball
D. 1/4th of that of small size ball
5 A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that
A. water contains hydrogen atoms, air does not
B. water molecules are smaller than molecules in the air
C. water molecules are smaller than molecules in the air
D. surface tension of the water prevents it from
6 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
7 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
8 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
9 Surface tension of water is reduced by adding
A. Detergents
B. Camphor
C. Plastic
D. Both A and B
10 0.10 cm can be written as:
A. 1.0 x 10-2m
B. 1.0 x 10-3cm
C. 1.0 x 10-4cm
D. 1. x 10-4m

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