AvdyneAeroservice:.Element #3A 40-Questions

Element #3A....Good luck!...and remember you will be asked 3 questions from this pool.

(3A1) What is a facsimile?
1. The transmission of characters by that form a picture when printed.
2. The transmission of still pictures by slow-scan television.
3. The transmission of video by television.
4. The transmission of printed pictures for permanent display on paper.
(3A2) What is the standard scan rate for VHF 137 Mhz polar orbiting weather facsimile reception?
1. 240 lines per minute.
2. 50 lines per minute.
3. 150 lines per second.
4. 60 lines per second.
(3A3) What is the standard scan rate for high-frequency 3 MHz-23 MHz weather facsimile reception from associated shore stations?
1. 240 lines per minute.
2. 120 lines per minute.
3. 150 lines per second.
4. 60 lines per second.
(3A4) The Distance Measuring Equipment (DME) measures the distance from the aircraft to the DME ground station. This is referred to as:
1. The slant range.
2. DME bearing.
3. Glide Slope angle of approach.
4. Localizer course width.
(E3A5) What is an ascending pass for a low-earth-orbit communications satellite?
1. A pass from west to east.
2. A pass from east to west.
3. A pass from south to north.
4. A pass from north to south.
(E3A6) What is a descending pass for a low-earth-orbit communications satellite?
1. A pass from north to south.
2. A pass from west to east.
3. A pass from east to west.
4. A pass from south to north.
(E3A7) What is the period of a satellite?
1. An orbital arc that extends from 60 degrees west longitude to 145 degrees west longitude.
2. The point on an orbit where satellite height is minimum.
3. The amount of time it takes for a satellite to complete one orbit.
4. The time it takes a satellite to travel from perigee to apogee
(E3A8) What is the accuracy of a global positioning system (GPS) fix with selective availability (SA) turned on?
1. 100 meters 95% of the time.
2. 100 feet 50% of the time.
3. 150 meters 95% of the time.
4. 10 feet 95% of the time.
(E3A9) What is the probable cause for a docked vessel to occasionally register speed and direction on a global positioning system (GPS) receiver?
1. Interference entering the antenna cable.
2. A misconnection to the associated electronic chart display.
3. A loose coaxial cable connector in the antenna unit.
4. A normal condition caused by Department of Defense (DOD) selective availability
(E3A10) What voice communications system will lead to a slight delay and possible echo in a telephone conversation?
1. Propagational delay in communications through a geostationary satellite.
2. Acoustic delay and echo over cellular phone frequency.
3. Propagational delays and echoes on low-earth-orbit satellites.
4. Propagational delays on marine VHF 157/162 MHz bands
(E3A11) Why does the received signal from a satellite, stabilized by a computer-pulsed electromagnet, exhibit a fairly rapid pulsed fading effect?
1. Because the satellite is rotating.
2. Because of ionospheric absorption.
3. Because of the satellite's low orbital altitude.
4. Because of the Doppler effect.
(E3A12) The majority of airborne Distance Measuring Equipment systems automatically tune their transmitter and receiver frequencies to the paired __ channel.
1. VOR/marker beacon.
2. VOR/LOC.
3. Marker beacon/glideslope.
4. LOC/Glideslope.
(E3A13) The Distance Measuring Equipment (DME) ground station has a built-in delay between reception of an interrogation and transmission of the reply to allow :
1. Someone to answer the call.
2. The VOR to make a mechanical hook-up.
3. Clear other traffic for a reply.
4. Operation at close range.
(E3A14) During soldering operations, "wetting" is:
1. The action of the flux on the surface of the connection
2. The blending of solder and copper to form a new alloy.
3. The dipping of the connection in water to cool the connection.
4. The operation of cooling the completed connection with flux.
(E3A15) One nautical mile is equal to how many statute miles?
1. 1.5.
2. 8.3.
3. 1.73.
4. 1.15.
(E3A16) Solder most commonly used for hand soldering in electronics is :
1. 50% tin 50% lead.
2. 60% tin 40% lead.
3. 40% tin 60% lead.
4. 30% tin 30% lead.
(E3A17) Which of the following is true about the soldering tip?
1. One size soldering tip is right for all jobs, only the heat is changed.
2. If the temperature of the soldering tip is the same in each case, the larger work mass will heat up faster than the smaller one will.
3. Iron-plated soldering tips require no preparation before using.
4. The soldering tip should be tinned during the initial heating up of the soldering iron.
(E3A18) 3:00 PM Central Standard Time is:
1. 1000 UTC.
2. 2100 UTC.
3. 1800 UTC.
4. 0300 UTC.
(E3A19) Which of the following is an acceptable method of solder removal from holes in a printed board?
1. Compressed air.
2. Toothpick.
3. Soldering iron and a suction device.
4. Power drill.
(E3A20) 6:00 PM PST is equal to what time in UTC?
1. 0200.
2. 1800.
3. 2300.
4. 1300.
(E3A21) The ideal method of removing insulation from wire is :
1. The thermal stripper.
2. The pocket knife.
3. A mechanical wire stripper.
4. The scissor action stripping tool.
(E3A22) 2300 UTC time is:
1. 2PM CST.
2. 3 PM PST.
3. 10 AM EST.
4. 6 AM EST.
(E3A23) One statute mile equals how many nautical miles?
1. 3.8.
2. 1.5.
3. 0.87.
4. 0.7.
(E3A24) When soldering electronic circuits be sure to:
1. Wet wires with flux after soldering.
2. Use maximum heat.
3. Heat wires until wetting action begins.
4. Use maximum solder to insure a good bond.
(E3A25) What is the purpose of flux?
1. Removes oxides from surfaces and prevents formation of oxides during soldering.
2. To act as a lubricant to aid the flow of the solder.
3. Acid cleans printed circuit connections.
4. To cool the soldered connection.
(E3A26) Which of these will be useful for insulation at UHF?
1. Rubber.
2. Mica.
3. Wax impregnated paper.
4. Lead.
(E3A27) The condition of a lead-acid storage battery is determined with a(n):
1. Hygrometer.
2. Manometer.
3. FET.
4. Hydrometer.
(E3A28) Lines drawn from the VOR station in a particular magnetic direction are:
1. Radials.
2. Quadrants.
3. Bearings.
4. Headings.
(E3A29) The horizontal dipole VOR transmit antenna rotates at revolutions per second.
1. 60.
2. 2400.
3. 30.
4. 1800.
(E3A30) The direction from the aircraft's nose to the VOR station is referred to as the :
1. Heading.
2. Bearing.
3. Deflection.
4. Inclination.
(E3A31) All directions associated with a VOR station are related to:
1. North pole.
2. North star.
3. Magnetic north.
4. None of these.
(E3A32) If a shunt motor, running with a load, has its shunt field opened, how would this affect the speed of the motor?
1. Slow down.
2. Stop suddenly.
3. Speed up.
4. Unaffected.
(E3A33) On runway approach, an ILS Localizer shows :
1. Deviation left or right of runway center line.
2. Deviation up and down from ground speed.
3. Deviation percentage from authorized ground speed.
4. Wind speed along runway.
(E3A34) What radio navigation aid determines the distance from an aircraft to a selected VORTAC station by measuring the length of time the radio signal takes to travel to and from the station?
1. Radar.
2. Loran C.
3. Distance Marking (DM).
4. Distance Measuring Equipment (DME).
(E3A35) Which of the following is a feature of an Instrument Landing System (ILS)?
1. Localizer: shows aircraft deviation horizontally from center of runway.
2. Altimeter: shows aircraft height above sea-level.
3. VHF Communications: provide communications to aircraft.
4. Distance Measuring Equipment: shows aircraft distance to VORTAC station.
(E3A36) Why do we tin component leads?
1. It helps to oxidize the wires.
2. Prevents rusting of circuit board.
3. Decreases heating time and aids in connection.
4. Provides ample wetting for good connection.
(E3A37) What is the purpose of using a small amount of solder on the tip of a soldering iron just prior to making a connection?
1. Removes oxidation.
2. Burns up flux.
3. Increases solder temperature.
4. Aids in wetting the wires.
(E3A38) What occurs if the load is removed from an operating series DC motor?
1. It will stop running.
2. Speed will increase slightly.
3. No change occurs.
4. It will accelerate until it flies apart.
(E3A39) Why are concentric transmission lines sometimes filled with nitrogen?
1. Reduces resistance at high frequencies.
2. Prevent water damage underground.
3. Keep moisture out and prevent oxidation.
4. Reduce microwave line losses.
(E3A40) Nitrogen is placed in transmission lines to:
1. Improve the "skin-effect" of microwaves.
2. Reduce arcing in the line.
3. Reduce the standing wave ratio of the line.
4. Prevent moisture from entering the line.

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