Test 4

After an automatic direction finding antenna has been installed, the

loop must be calibrated.

When installing a DME antenna, it should be aligned with the

centerline on the airplane.

Installed radio equipment is  protected from damage due to jolts and vibration by

shock mounts.

The elevator channel of an autopilot controls the aircraft about which axis of rotation?

Lateral

When bending coaxial cable, the bend radius should be at least

10 times the diameter of the cable.

when an antenna is installed, it should be fastened

so that loads imposed are transmitted to the aircraft structure.

The addition of avionics and associated antenna systems forward of the CG limit will affect 

Empty weight and useful load.

On modern large aircraft, what electronic device typically monitors flight parameters and performs autopilot functions?

Flight management computer.

An aircraft antennal installation must be grounded

to the airframe.

A DME antenna should be located in a position on the aircraft that will

not be blanked by the wing when the aircraft is banked.

What characteristics of the installation of a rigid antenna on a vertical stabilizer should be evaluated?

Flutter and vibration.

An emergency locator transmitter (ELT) is normally activated by an inertial switch or equivalent mechanism if subjected to a force of a prescribed intensity and duration. It must activate when the force is applied

parallel to the longitudinal axis of the aircraft.

Which channel of an autopilot detect changes in pitch attitude of an aircraft?

Elevator

VHF radio signals are commonly used in 

both VOR navigation and ATC communications.

Which of the following provides manual maneuverability of the aircraft while the autopilot is engaged?

Flight controller.

In general, the purpose of an aircraft transponder is to

receive an interrogation signal from a ground station and automatically send a reply back.

The purpose of a localizer is to

align the airplane with the center of the runway.

When must the radio station license be displayed in an aircraft equipped with a two-way radio?

When the aircraft is operated outside the U.S.

A fully integrated autopilot controls the aircraft around how many axes?

3

What is the operating principle of the sensing device used in an autopilot system?

The relative motion between a gyro and its supporting system.

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?

Normal operation.

In an autopilot, which signal nullifies ext. input signal to the ailerons?

Follow-up signal.

In the landing configuration GPWS typically monitors the radio (radar) altimeter; air data computer; instrument landing system, and 

landing gear and flap positions.

An emergency locator transmitter (ELT) battery must be capable of furnishing power for signal transmission for at least

48 hours

Long Range Navigation (LORAN) systems determine aircraft location by

means of pulsed signals transmitted from ground stations.

What component is the sensing device in an electromechanical autopilot system?

gyro

A gasket or sealant is used between the antenna mast and fuselage skin

to prevent the entry of moisture.

In which control element of an autopilot system is an attitude indicator?

sensing

Static dischargers help eliminate radio interference by dissipating static electricity into the atmosphere at

low current levels.

When operationally checking an autopilot system on the ground, after the aircraft's main power has been switched on, the autopilot should be engaged

only after the gyros come up to speed and the amplifier warms up.

Doublers are used when antennas are installed to

reinstate the structural strength of the aircraft skin.

How may the battery replacement date be verified for an emergency locator transmitter (ELT)?

By observing the battery replacement date marked on the outside of the transmitter.

Part of the ADF system used on aircraft includes

sense and loop antennas.

The purpose of a glideslope system is to

assist the pilot in making a correct angle of descent to the runway.

The preferred location of an ELT is

as far aft as possible, but forward of the vertical fin.

When installing coaxial cable, it should be secured firmly along its entire length

at 2 foot intervals

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.

One antenna can be used for the radio range and standard broadcast bands in light aircraft because the 

two ranges are close together.

What is the main purpose of a servo in an autopilot system?

Move the control surface as commanded.

Dutch Roll, a combination yawing and rolling oscillation that affects many swept wing aircraft, is counteracted with

a yaw damper system.

The preferred location of a VOR antenna on light aircraft is on

top of the cabin with the apex of the V pointing forward.

How may the operation of an installed emergency locator transmitter (ELT) be verified during aircraft inspection?

By tuning a communications receiver to the civil emergency frequency, and activating the ELT momentarily within five minutes after the hour.

How much clearance from the seat bottom is required when installing radio equipment under a seat?

1 inch with the seat occupied and subjected to maximum downward seat spring deflection.

What component of an autopilot system applies torque to the control surfaces of an aircraft?

servo