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 a water droplet falls through air, the net force on it is

Question # 2

In a normal healthy person the value of systolic pressure is

Question # 3

The irregular and unsteady flow of the fluid is called

Question # 4

Bernoulli's equation is applicable for

Question # 5

Fluid friction is _____ the friction between two solid surfaces:

Question # 6

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

Question # 7

The body will move with terminal velocity when it acquires

Question # 8

Machine parts are jammed due to:

Question # 9

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

Question # 10

Above a certain velocity of a fluid is called

Question # 11

With the increase of temperature viscosity

Question # 12

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

Question # 13

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 14

Ball pen functions on the principle of

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
2 Surface tension of water is reduced by adding
A. Detergents
B. Camphor
C. Plastic
D. Both A and B
3 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
4 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
5 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
6 Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is
A. 1/4 times
B. 4 times
C. Twice
D. 1/2 of 8 cm diameter pipe
7 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
8 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
9 High speed meteors rushing through air reduces to ashes because of:
A. Force of gravity
B. High resistance of air
C. Drag force
D. None of these
10 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them

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