Communication, light signal part 2

(Refer to Figure 26.) Where is the strongest signal for this antenna?. Below the antenna. Above the antenna. Ahead of the antenna.

The purpose of a glideslope system is to. provide for automatic altitude reporting to air traffic control. indicate the distance the airplane is from the end of the runway. assist the pilot in making a correct angle of descent to the runway.

Aircraft antenna must be grounded to the. airframe. wing spar. bus bar.

One antenna can be used for the radio range and standard broadcast bands in light aircraft because the. two ranges are close together. antenna is omnidirectional. antenna length may be electronically adjusted.

What characteristics of the installation of a rigid antenna on a vertical stabilizer should be evaluated?. Polarization and impedance. Impedance and interference. Flutter and vibration.

What component of an autopilot system applies torque to the control surfaces of an aircraft?. Servo. Controller. Gyro.

(Refer to Figure 28.) What kind of antenna is this?. An ELT antenna. A DME antenna. A VHF communications antenna.

(Refer to Figure 29.) What kind of antenna is this?. A glide slope antenna. A VOR and localizer antenna. A radar beacon transponder antenna.

In general, the purpose of an aircraft transponder is to. continually transmit heading, speed, and rate of climb/descent, etc., information to ATC. monitor aircraft speed, heading, altitude, and attitude whenever the autopilot system is engaged. receive an interrogation signal from a ground station and automatically send a reply back.

Which of the following is a two-way text communication link between an airliner in flight and the airline's main ground facilities?. Wide Area Augmentation System (WAAS). Aircraft Communication Addressing & Reporting System (ACARS). Cospas-Sarsat.

How may the operation of an installed emergency locator transmitter (ELT) be verified during aircraft inspection?. By moving the deactivating switch from the DISARM position to the ARM position while monitoring the civil emergency frequency with a communications receiver at five minutes after the hour. By activating the five-G switch and turning the unit on at five minutes after the hour. By tuning a communications receiver to the civil emergency frequency and activating the ELT momentarily within five minutes after the hour.

(Refer to Figure 34.) What kind of antenna is this?. A VOR/glide slope antenna. A marker beacon receiver antenna. A radar beacon transponder antenna.

What is the main purpose of a servo in an autopilot system?. Correct for displacement of the aircraft about its axis. Change mechanical energy to electrical energy. Move the control surface as commanded.

Which channel of an autopilot detects changes in pitch attitude of an aircraft?. Elevator. Aileron. Rudder.

The preferred location of a VOR antenna on light aircraft is on. the bottom of the fuselage and as far forward as possible. top of the cabin with the apex of the V pointing forward. top of the vertical stabilizer.

In an autopilot, which signal nullifies the input signal to the ailerons?. Displacement signal. Course signal. Follow-up signal.

In which control element of an autopilot system is an attitude indicator?. Command. Sensing. Input.

Part of the ADF system used on aircraft includes. RMI indicator antenna. marker beacon antenna. sense and loop antennas.

VHF radio signals are commonly used in. ATC communications. VOR navigation. both VOR navigation and ATC communications.

(Refer to Figure 15.) What is the approximate drag load on an antenna with a frontal area of .137 square feet installed on an aircraft with a speed of 275 mph?. 3.387 pounds. 3.741 pounds. 3.592 pounds.

After an automatic direction finding antenna has been installed, the. antenna must be grounded. loop must be calibrated. transceiver must be compensated.

What component is the sensing device in an electromechanical autopilot system?. Servo. Gyro. Controller.

In the landing configuration GPWS typically monitors the radio (radar) altimeter, air data computer, instrument landing system, and. aileron, rudder, and elevator positions. landing gear and flap positions. spoiler, slat, and stabilizer positions.

Static dischargers help eliminate radio interference by dissipating static electricity into the atmosphere at. low current levels. high voltage level. high current levels.

(Refer to Figure 15.) What is the approximate drag load on an antenna with a frontal area of .125 square feet installed on an aircraft with a speed of 225 mph?. 2.069 pounds. 2.073 pounds. 2.080 pounds.

An emergency locator transmitter (ELT) battery must be capable of furnishing power for signal transmission for at least. 36 hours. 48 hours. 72 hours.

Installed radio equipment is protected from damage due to jolts and vibration by. shock mounts. spring and/or viscous damper mounted racks. rubber or foam cushioning material between circuit chassis and case.

(Refer to Figure 33.) What kind of antenna is this?. A VOR/glide slope antenna. A marker beacon receiver antenna. A radar beacon transponder antenna.

Which of the following provides manual maneuverability of the aircraft while the autopilot is engaged?. Servo-amplifier. Directional gyro indicator. Flight controller.

When testing an emergency locator transmitter (ELT), a 50-ohm dummy load. is connected in parallel with the antenna to reduce transmissions. is connected in place of the antenna to prevent the signal from being radiated into space. amplifies the ELT output for better analysis of the signal.

What is the primary purpose of an autopilot?. To relieve the pilot of control of the aircraft during long periods of flight. To allow for longer flights and more precise courses flown by the pilot. To stabilize flight control in turbulent conditions.

What will occur if an aircraft attitude is changed by its autopilot system in order to correct for an error and the involved control surfaces are returned to streamline by the time the aircraft has reached its correct position?. Overshoot and oscillation. Undershoot and oscillation. Normal operation.

A fully integrated autopilot controls the aircraft around how many axes?. Two. Three. Four.

Doublers are used when antennas are installed to. eliminate antenna vibration. prevent oil canning of the skin. reinstate the structural strength of the aircraft skin.

When must the emergency locator transmitter (ELT) battery be replaced (other than reading the replacement date)?. When the transmitter has been in use for more than one cumulative hour. Must be replaced annually or if the five-G switch has been activated. When the transmitter has been tested more than ten times.