More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
ECAT Physics Chapter 6 Fluid Dynamics Online Test MCQs With Answers
Question # 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
Choose an answer
water contains hydrogen atoms, air does not
water molecules are smaller than molecules in the air
water molecules are smaller than molecules in the air
surface tension of the water prevents it from
Previous
Skip
Next
Question # 2
When a fluid is in motion, its flow can be considered as
Choose an answer
turbulent
streamline
either or them
neither of them
Previous
Skip
Next
Question # 3
A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is
Choose an answer
125 J
90 J
160 J
85 J
Previous
Skip
Next
Question # 4
0.10 cm can be written as:
Choose an answer
1.0 x 10
-2
m
1.0 x 10
-3
cm
1.0 x 10
-4
cm
1. x 10
-4
m
Previous
Skip
Next
Question # 5
The velocity of falling raindrop attains limited value because of
Choose an answer
Up trust of air
Viscous force exerted by air
Surface tension effect
Air currents atmosphere
Previous
Skip
Next
Question # 6
Stock's law holds for:
Choose an answer
Motion through free space
Motion through viscous medium
Bodies of all shapes
None of these
Previous
Skip
Next
Question # 7
Blood vessels can be stretch like rubber, therefore they are
Choose an answer
rigid
hard
very thick
not rigid
Previous
Skip
Next
Question # 8
Fluids resist force, This property is called
Choose an answer
Stiffness
Strength
Ductility
Elasticity
Previous
Skip
Next
Question # 9
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
Choose an answer
1/4 times
4 times
Twice
1/2 of 8 cm diameter pipe
Previous
Skip
Next
Question # 10
When a water droplet falls through air, the net force on it is
Choose an answer
Net force = drag force - weight
Net force = weight - drag force
Net force = drag force + weight
Net force = weight + drag force
Previous
Skip
Next
Question # 11
In a normal healthy person the value of diastolic pressure is
Choose an answer
75 - 80 torr
100 torr
120 torr
none of them
Previous
Skip
Next
Question # 12
At low speeds, the drag force is
Choose an answer
proportional to speed
inversely proportional to speed
not simply proportional to speed
none of them
Previous
Skip
Next
Question # 13
The analysis of fluid motion becomes simplified by using
Choose an answer
law of conservation
law of conservation of energy
both of them
none of them
Previous
Skip
Next
Question # 14
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
Choose an answer
Independent of h
Proportional to h
1/2
Proportional to h
Proportional to h
2
Previous
Skip
Next
Question # 15
The unit of viscosity is SI system is:
Choose an answer
Kg
-1
m sec
-1
Kgm
-1
sec
-1
Kg
-1
m
-1
sec
None of these
Previous
Skip
Next
Question # 16
With increase of temperature, the viscosity of liquid and gases
Choose an answer
Increases for both
Decreases for both
Increases for liquids and decreases for gases
Decreases for liquids and increases for gases
Previous
Skip
Next
Back