overread.

overread in a climb and under-read in a descent.

underread.

underread in a climb and over-read in a descent.

To vibrate the control column to warn the pilot of the onset of stall.

To shake the control wheel to alert the pilot of a stall condition.

To emit a loud sound to indicate a stall condition.

To provide visual indicators on the instrument panel for stall awareness.

density.

OAT.

Mach number.

pressure altitude.

maximum temperature attainable by the air when brought to rest, and is equal to or less than TAT.

temperature measured on the surface of an aircraft in flight, and is equal to or less than SAT.

average temperature measured outside an aircraft, and is equal to or less than TAT.

ambient temperature measured outside an aircraft, and it CANNOT be higher than TAT.

Mach number decreases.

TAS decreases.

TAS remains constant.

Mach number remains constant

high influence of line resistance on the indication.

influence of temperature on the indication.

necessity of a power supply.

generation of spurious signals at the commutator.

2, 3

1, 2, 3

1, 3

1, 2

Electrical signal generated by a pressure sensing element in a remote location.

By saveral aneroid capsules.

By a Bourdon tube.

By bellows via mechanical sensing from a Bourdon tube.

1000 Pascal.

100 000 Pascal.

10 Pascal.

100 Pascal.

a speed probe and a phonic wheel.

a three-phase generator and a synchronous motor turning a drag-cup assembly.

three speed probes and a phonic wheel.

three interconnected dynamos along a phonic whee