Atmosphere

#4. When considering static pressure: 1-In aviation, static pressure can be measured in hectopascal=s 2-The SI units for static pressure is N/m² 3-Static pressure is the product of the mass of air pressing down on the air beneath 4-Referred to as static pressure because of the air's stationary or static presence 5-The lower the altitude, the greater the static pressure. The correct statements are:

• A2,4 and 5
• B1,2,3,4 and 5
• C1,3 and 5
• D1 and 5

#13. A static pressure vent must be positioned:

• AOn a part of the aircraft structure where the airflow is undisturbed, in a surface at right angles to the airflow direction.
• BOn a part of the structure where the airflow is undisturbed, in a surface parallel to the airflow direction.
• CAt the stagnation point
• DAt the point on the surface where the airflow reaches the highest speed

#16. Calibration of the Air Speed Indicator is based upon the density:

• AAt the altitude at which the aircraft is flying.
• BAt sea level ICAO International Standard Atmosphere temperature
• CAt sea level
• DAt sea level ICAO International Standard Atmosphere +15°C temperature