ratio Pt7 / Pt2.

ratio Pt2 / Pt7.

the twist of a torque shaft of a known length.

change in frequency between the torque shaft and the reference shaft.

Standard approach speed range.

Normal operating speed range.

Flap operating speed range.

Lowest part of the caution speed range.

1,3

2,3

2,4

1,4

steadily decrease until the minimum value that can be indicated is reached.

be correct, provided the aeroplane maintains its altitude.

be correct during unaccelerated climb.

decrease during climb and increase during descent.

be over-reading during climbs.

constantly indicates a 500 feet per minute climb.

return to, and indicate, zero feet per minute.

be under-reading during climbs.

a single-phase generator connected to a synchronous motor.

a permanent magnet turning inside a non magnetic drag cup.

a three phases generator connected to an asynchronous motor.

a single-phase generator connected to an asynchronous motor.

smoke detector.

turbine temperature probe.

vibration detector.

pressure sensor.

density.

Mach number.

pressure altitude.

OAT.

1 kg = 0.22 lb.

1lb = 2.2 kg.

1 kg = 0.45 Ib.

1lb=0.45 kg