Fluid Dynamics

Question 1

What is specific gravity?

Answer 1

The density with of a liquid sample compared to the density of water at 4 degrees

Question 2

How to measure SG

Answer 2

Weight of sample / weight of equal vol of water

Question 3

How to you measure SG

Answer 3

Hydrometer

Question 4

Weight of water

Answer 4

1000

Question 5

What is viscosity

Answer 5

Resistance of a fluid to change in shape.

Question 6

Unit of viscosity

Answer 6

Ns/m^2

Question 7

What is streamlining

Answer 7

Greatly decreasing the resistance

Question 8

How to work out absolute pressure

Answer 8

P abs = Pg + Patm

Question 9

What is 1 atm equal to

Answer 9

14.7 lbs/inch^2
760 mmH
29.92 inHg

Question 10

What is Bernoulli principle

Answer 10

When energy is neither added to nor taken away from a fluid in motion, the PE or pressure decreases when the KE or V increases (The total pressure is constant )

Question 11

What is fluid pressure

Answer 11

When the pressure exerted by a column is determined by the height.
In other words - higher the column = higher the pressure

Question 12

What is pascals law

Answer 12

Equal pressure

Question 13

What is a hydraulic jack

Answer 13

A form of fluid power systems

Question 14

How to calculate Celsius

Answer 14

5/9 (f-32)

Question 15

How to calculate farenheit

Answer 15

9/5 c+ 32

Question 16

What is heat

Answer 16

Energy in transit

Question 17

Why do we use mercury to measure temperature

Answer 17

Because mercury is very dense and avoids freezing and boiling