WorksheetsRadioComm
Total questions: 10
Worksheet time: 2mins
(8661) Installed radio equipment is protected from damage due to jolts and vibration by
a. shock mounts.
b. spring and/or viscous damper mounted racks.
c. rubber or foam cushioning material between circuit chassis and case.
(8673) Static dischargers help eliminate radio interference by dissipating static electricity into the atmosphere at
a. low current levels.
b. high voltage level.
c. high current levels.
(8668) An emergency locator transmitter (ELT) battery must be capable of furnishing power for signal transmission for at least
a. 36 hours
b. 48 hours.
c. 72 hours.
(8667) When must the emergency locator transmitter (ELT) battery be replaced (other than reading the replacement date)?
a. When the transmitter has been in use for more than one cumulative hour.
b. Must be replaced annually or if the five G switch has been activated.
c. When the transmitter has been tested more than ten times.
(8666) When installing coaxial cable, it should be secured firmly along its entire length
a. at 1-foot intervals.
b. wherever the cable sags.
c. at 2-foot intervals.
(8662) (1) Use solder to attach bonding jumpers on radio equipment.
(2) Radio equipment is bonded to the aircraft in order to provide a low- impedance ground and to minimize radio interference from static electrical charges.
Regarding the above statements,
a. only No. 1 is true.
b. both No. 1 and No. 2 are true.
c. only No. 2 is true.
(8682) Doublers are used when antennas are installed to
a. eliminate antenna vibration.
b. prevent oil canning of the skin.
c. reinstate the structural strength of the aircraft skin.
(8691) When bending coaxial cable, the bend radius should be at least
a. 10 times the diameter of the cable.
b. 15 times the diameter of the cable
a. 20 times the diameter of the cable.
(8676) VHF radio signals are commonly used in:
a. ATC communications.
b. VOR navigation.
both VOR navigation and ATC communications
(8675) An aircraft antenna installation must be grounded
a. to the airframe
b. to the engine.
c. to the radio rack.
