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MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
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Fluid Mechanics Class 12 MCQ Questions With Answers
1.
The buoyant force that acts on a 20,000-N ship is
somewhat less than 20,000 N.
20,000 N.
more than 20,000 N.
dependent on whether it is in fresh water or salt water.
2.
A system that multiplies force by transmitting pressure from a small surface area through a confined fluid to a larger surface area.
hydraulic system
archimedes system
pressure system
bernoulli effect
3.
The SI unit of pressure
Newton
Gram
Pascal
Pound
4.
Which of the following is a fluid?
helium
ice
iron
gold
5.
Bernoulli's equation cannot be used for flow of water in river because the flow is
streamlined
turbulent
laminar
viscous
6.
A buoyant force is an upward force applied on an object by a
Substance
Fluid
Pressure
Displacement
7.
Diagram shows the design of a dam. Why does the thickness of the dam increase with its depth?
The design of this structure is stronger.
Water pressure increases with depth.
The cost of construction is lower.
Water pressure acts uniformly in all directions.
8.
States that as the velocity of a fluid increases, the pressure decreases. This causes planes to fly .
Archimedes' Principle
Bernoulli's Principle
Pascal's Principle
9.
Several cans of different sizes and shapes are all filled with the same liquid to the same depth. Then,
The pressure on the bottom of each can is the same
The weight of the liquid on the bottom of each can is the same
The least pressure is at the bottom of the can with the largest bottom area
the force of the liquid on the bottom of each can is the same
10.
The entrance of a pipe has a cross-sectional area of 0.6 m2, while the exit's area is 0.2 m2. If an ideal fluid enters the pipe at a speed of 1.5 m/s, at what speed does it leaves the pipe?
1.5 m/s
4.5 m/s
45 m/s
6 m/s
11.
If you were to smoosh down a piece of bread, what would happen to its mass?
it would decrease
it would increase
it would stay the same
12.
Helium balloons rise on earth because
helium is less dense than air
helium is more dense than air
helium is cooler than air
helium is warmer than air
13.
In a pool you have an apparent weight of 250 N, if there is 70N of force acitng on you, what would be your weight outside of the pool?
70 N
180 N
250 N
320 N
14.
This is what happens to an object when the buoyant force is stronger than the gravitational force.
sinks
floats
neutrally buyant
I don't know...
15.
Where will the pressure be greater - above or below the wing?
above
below
16.
Which would have greater pressure, 2 meters below the surface in an infinite pool, or 2 meters below the surface of an Olympic pool?
infinite pool
olympic pool
they would both be the same
17.
According to Bernoulli's theorem in a flowing liquid
velocity is inversely proportional to pressure
velocity is directly proportional to pressure
velocity is directly proportional to volume
18.
When pressure is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the fluid. This fact is called________.
Pascal's Principle
Newton's Principle
Archimedes' Principle
Bernoulli's Principle
19.
Bernoulli's principle states that as the velocity of a fluid ______, the pressure exerted by the fluid ______
increases; increases
decreases; decreases
increases; decreases
decreases; increases
20.
How do ships float when they are made of tons of metal?
they have engines that hold them up
the water they displace has a weight greater than that of the ship
their density is higher than water
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