The radio link that carries your commands
1.[1p] The arming switch exists because
The arming switch exists because
Correct
The answer is: spinning propellers are dangerous, so the motors must stay dead until a deliberate switch allows them
The answer is: spinning propellers are dangerous, so the motors must stay dead until a deliberate switch allows them
The answer is: spinning propellers are dangerous, so the motors must stay dead until a deliberate switch allows them
2.[2p] Modern receivers send all channels down a single wire as a digital serial stream, which mainly
Modern receivers send all channels down a single wire as a digital serial stream, which mainly
Correct
The answer is: lowers latency and improves noise immunity compared with analog per-channel pulses
The answer is: lowers latency and improves noise immunity compared with analog per-channel pulses
The answer is: lowers latency and improves noise immunity compared with analog per-channel pulses
3.[2p] Compared with 2.4 GHz, a 900 MHz control link generally
Compared with 2.4 GHz, a 900 MHz control link generally
Correct
The answer is: reaches further and bends around obstacles better, at the cost of larger antennas
The answer is: reaches further and bends around obstacles better, at the cost of larger antennas
The answer is: reaches further and bends around obstacles better, at the cost of larger antennas
4.[2p] A link holds only while the captured signal stays above the noise, which is the idea of
A link holds only while the captured signal stays above the noise, which is the idea of
Correct
The answer is: a link budget
The answer is: a link budget
The answer is: a link budget
5.[3p] The safest common failsafe for a small craft losing its radio link is to
The safest common failsafe for a small craft losing its radio link is to
Correct
The answer is: cut the throttle and disarm so the craft drops on the spot rather than flying away
The answer is: cut the throttle and disarm so the craft drops on the spot rather than flying away
The answer is: cut the throttle and disarm so the craft drops on the spot rather than flying away
6.[2p] Holding the last command on link loss is dangerous because a craft that was climbing away will keep climbing out of range.
Holding the last command on link loss is dangerous because a craft that was climbing away will keep climbing out of range.
Correct
The answer is: True
7.[2p] Telemetry sent back from the craft is most valuable in flight for
Telemetry sent back from the craft is most valuable in flight for
Correct
The answer is: warning that the signal or battery is fading before it fails, so the pilot can turn back in control
The answer is: warning that the signal or battery is fading before it fails, so the pilot can turn back in control
The answer is: warning that the signal or battery is fading before it fails, so the pilot can turn back in control