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Computational fluid dynamics Class 11 MCQ Questions With Answers
1.
Blood has density equal to that of:
Mercury
Honey
water
glycerin
2.
As the water falls from tap, its speed increases and cross sectional area:
Decreases
Increases
become zero
becomes Constant
3.
The equation πΉ = 6ππππ£ is called:
Newtonβs law
Stokeβs law
Ohmβs law
Lenzβs law
4.
An object moving through a fluid experience a retarding force called:
Drag force
Gravitational force
Terminating force
Frictional force
5.
Speed of efflux can be determined by applying:
Bernoulli's Equation
Continuity Equation
Torricelli's Theorem
Newton's law of motion
6.
If cross-sectional area of pipe decreases, the speed of fluid must increase according to:
Continuity equation
Bernoulli's equation
Torricelli's theorem
Venture relation
7.
One Torr is expressed in ππβ2 as:
133.3 ππβ2
13.33 ππβ2
1.333 ππβ2
1333 ππβ2
8.
When weight of an object falling freely becomes equal to the drag force, then the body will move with:
Increasing speed
Decreasing speed
Constant speed
Constant acceleration
9.
The maximum constant velocity of an object falling vertically downward is called:
Final velocity
Terminal velocity
Instantaneous velocity
Average velocity
10.
A man standing near a fast moving train may fall.
Away from the train
Towards the train
On the same place
In the direction of train
11.
The dimensions of coefficient of viscosity is:
ML1T-2
M2L1T1
ML-1T-1
ML-1T-2
12.
When the body reaches its terminal velocity, the acceleration of the body becomes
Zero
Minimum
Maximum
Half of the initial
13.
If radius of droplet becomes half then its terminal velocity will be:
Half
Double
One forth
Four times
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