Chapter2

Question 1

List 3 characteristics of Horizontally opposed engines

Answer 1

Air cooled 4 stroke engine
Even number of cylinders
Small frontal area
Low parasite drag

Question 2

What stroke engine ultra light uses

Answer 2

2 stroke

Question 3

List 4 characteristics of radial engine

Answer 3

Big surface are
More parasite drag
Odd no cylinders
Expensive maintenance

Question 4

4 stroke name

Answer 4

Intake
,compression
Power
Exhaust

Question 5

How Are most certified piston powered aircraft cooled

Answer 5

Air cooled

Question 6

Name some planes that are liquid cooled

Answer 6

Mustang, katana p51

Question 7

P lead is related to

Answer 7

Grounding of magnetos

Question 8

If p lead is Broken the engine will continue to run it means

Answer 8

Mags are still alive not grounded when shut down

Question 9

What is another cause for little or no RPM drop

Answer 9

Magneto timing

Question 10

Apart from taking pollution out the exhaust system also does what

Answer 10

Reduces noise

Question 11

Leaks in exhaust system could cause

Answer 11

Carbon monoxide poisoning

Question 12

What are ancillary controls

Answer 12

Mixture control n carburetor heat control

Question 13

What is chemical correct mixture ratio

Answer 13

1:15

Question 14

 What is the best power ratio

Answer 14

1:14

Question 15

Leaning the mixture can also cause

Answer 15

Decrease the chance of spark plug fouling and decrease preignition

Question 16

What does turbo charger and super charge do

Answer 16

Increase the altitude at which full power can be maintained

Question 17

Where does turbo charger gets its power from

Answer 17

Gets its power from the exhaust which turns the power turbine

Question 18

Give me an advantage and disadvantage of turbo charger

Answer 18

Advantage is it’s very lightweight and does not take power directly from the engine. This is for advantage it’s it’s very hot operating it’s very expensive and it’s very high maintenance.

It works by compressing the air

Question 19

What does the Wastegate do

Answer 19

Regulates the amount of exhaust gas directed to turbine. When the west gate is open the engine is not turbo charged when the gate is closed the engine is turbo charged

Question 20

How does supercharger works As compared to turbo charger

Answer 20

Supercharger is internally driven compressor power directly by the engine or by the crankshaft the advantage is it’s reliable and less expensive
Disadvantage is it takes power from the engine up to 16%

Question 21

High density =

Answer 21

High density = low air density, high temperature, high humidity, high altitude.
Low density altitude =high air density, low temperature, low humidity, low altitude