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

A device used to measure the speed of liquid flow is known as

Question # 2

N s m-2is unit of:

Question # 3

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

Question # 4

The dimensions of viscosity are:

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

An object moving through a fluid experiences a retarding force called a

Question # 9

According to Stoke's law, drag force depends on

Question # 10

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

Question # 11

The smooth or steady streamline flow is known as

Question # 12

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2

Question # 13

What are the SI base units of the coefficient of viscosity

Question # 14

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

Question # 15

A person standing near the track of a fast moving train has tendency to fall towards it because of

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Density of fluid is defined as:
A. Its volume to mass ratio
B. Product of volume and mass
C. Its mass of volume ratio
D. None of these
2 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them
3 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these
4 The body passing a viscous medium affected by:
A. One force only
B. Two forces only
C. Four forces
D. None of these
5 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1
6 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them
7 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
8 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these
9 In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called
A. Quadratic equation
B. Equation of discontinuity
C. Equation of continuity
D. None of the above
10 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar

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