(014) What station marks the start of the strobe system?
B) Station 30+00
(014) How often does each strobe light unit flash?
C) Twice each second
(014) The strobe system is capable of producing how many brightness steps?
C) 3
(014) The wire that connects the flash head to the individual control cabinet is rated at...
B) 3 kV
(014) When does the hour (elapsed-time) meter operate?
C) When system is operated on high intensity.
(014) What would indicate a failure condition on the lightning protection varistors?
C) Charring on the surface
(015) How long does it take the flash capacitors to bleed off their charge?
B) 1 minute
(015) What is indicated when two skips occur within 100 flashes of the condenser discharge system?
A) A worn out lamp
(016) After notifying the control tower, what should you do before working on control circuits?
C) Isolate the circuit
(016) What indication is considered "good" when you read across a closed switch with a voltmeter?
A) Zero volts
(016) To check the coil of a deenergized relay, use...
A) an ohmmeter
(017) How are animals prevented from chewing on airfield lighting fixture cords?
A) Fixtures are designed so that no cords are exposed.
(017) What is used to maintain contact with the tower when away from the truck?
C) Hand-held radios
(017) What should you do just before screwing an elevated fixture coupling onto the base?
C) Twist the entire fixture counterclockwise several full rotations
(018) Which approach lighting system maintenance item must be performed daily?
B) Check and record burned out lamps.
(018) When should you check all approach light fixtures for alignment?
C) Twice a year.
(019) Where is the precision approach path indicator (PAPI) system located?
D) On the left side of the runway
(019) What occurs when a precision approach path indicator (PAPI) unit gets misaligned by more than ½ degree up or 1 degree down?
D) A tilt switch opens the entire circuit.
(020) How often are dielectric oil tests made on airfield regulators?
B) Annually.
(020) When you tie together two airfield light circuits for emergency operation, what do you do to prevent regulator overload?
D) Move the control wire from step 5 relay to step 4 relay.
(021) What meter do you use to perform insulation resistance tests on airfield light circuits?
A) Megohmmeter.
(021) To perform a direct current (DC) hi-potential test on a high-intensity runway edge circuit, what voltage value do you use?
B) 5,000.
(021) In order to perform a direct current (DC) hi-potential test on an airfield light circuit, what do you do with the leads once you remove them from the airfield regulator?
A) Support both leads and keep them clear of each other and the ground.
(021) When using radios, which two words should you use to describe circuit conditions?
A) Open/closed.
(021) Which method of troubleshooting is potentially destructive, and should not be used first?
