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

The flow of an ideal fluid is

Question # 2

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 3

Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to

Question # 4

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 5

Rate of flow can be expressed in

Question # 6

According to Stoke's law, drag force depends on

Question # 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

Question # 8

Bernoulli's equation is applicable for

Question # 9

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

Question # 10

The equation of continuity is

Question # 11

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

Question # 12

The body passing a viscous medium affected by:

Question # 13

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

Question # 14

The application of Bernoulli's equation is

Question # 15

The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
3 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
4 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
5 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them
6 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
7 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
8 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
9 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
10 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these

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