CGI Aircraft Systems & Instruments 2

Question 1

What is density altitude, and why is it important?

Accepted Answer

Pressure altitude corrected for nonstandard temperature; affects aircraft performance

Answer

Density altitude is pressure altitude corrected for nonstandard temperature and represents the altitude at which the aircraft 'thinks' it is flying for performance purposes.

Question 2

What happens to indicated airspeed (IAS) and true airspeed (TAS) as altitude increases at a constant power setting?

Accepted Answer

IAS decreases while TAS increases

Answer

As altitude increases, air density decreases, so the aircraft must fly faster (higher TAS) to produce the same aerodynamic pressure (IAS).

Question 3

During a static port blockage in flight, what will the altimeter display?

Accepted Answer

The altitude at which the blockage occurred, remaining frozen

Answer

A blocked static port freezes the altimeter, VSI, and airspeed at the readings they had when the blockage occurred.

Question 4

What is the function of the attitude indicator (artificial horizon)?

Accepted Answer

Shows pitch and bank attitude relative to the natural horizon

Answer

The attitude indicator uses a gyroscope to display the aircraft's pitch and bank relative to the actual horizon, independent of outside visual references.

Question 5

Which of the following best describes torque effect in a single-engine propeller aircraft?

Accepted Answer

The tendency to roll left as the engine torque reaction acts opposite to propeller rotation

Answer

Newton's third law causes the aircraft to roll opposite to propeller rotation direction; for a clockwise-rotating prop, the aircraft tends to roll left.

CGI - Certified Ground Instructor Practice Test

CGI - Certified Ground Instructor Practice Test

CGI Aircraft Systems & Instruments 2