Electrical and Enironmental 7
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- If the engine starter system is operating properly but the aircraft engine will not start, what components are working properly?
- Centrifugal switches.
- What is the last thing you must do before completing a troubleshooting cycle?
- Perform an operational checkout.
- When the GTC starter motor is turning, the oil pressure switch closes at approxmately...
- 5000 RPM.
- What type of fuel system valves link the left wing and the aft body tanks to the right wing, mid body, and forward body tanks?
- Interconnect.
- How does the auxiliary fuel tank indicating system give a no-flow indication?
- A flashy amber light.
- You can check the fuel boost pumps in the fuel control system by...
- pulling and resetting the pump circuit breakers.
- How many boost pumps are there in the main fuel tank no. 1?
- Four.
- The fuel-flow control switches for the external and outboard wing tanks are gaurded OFF...
- because fuel loads affect wing loading.
- The output of the scavenge pumps is approximately...
- 2 gallons per minute.
- If an ohmmeter reading from case ground to one phase of the fuel boost pump indicates infinity, what problem is most likely causing this?
- There is no problem. This is a normal reading.
- Thermal switches in a fire warning system are normally connected in...
- parallel with each other and in series with the warning light.
- Frequently used in five warning systems, the fire detector that has a high-nickel steel rod located along the centerline of a stainless steel tube assembly is called...
- an Iron Fireman switch.
- The maximum circuit resistance within a thermocouple circuit is...
- 5 ohms.
- The DC voltage that is supplied to the lights in a photoelectric circuit is pulsed at a rate of...
- 10 Hz.
- For the master caution lamps in a master caution system to illuminate,
- controller rectifier SCR2 conducts current to forward bias transistor Q1.
- The first step in troubleshooting a malfunction in an aircraft lighting system is to...
- analyze the malfunction.
- While troubleshooting an inoperative taxi light, you check for 28VAC on terminal A2 of the taxi light relay and find 0 VAC. The most probably cause for this problem is an open...
- wire between relay and taxi light.
- The locking cylinder unlock switch on the ramp and cargo door system is located in the...
- ramp.
- The position switches provide voltage to the locked solenoid of the ramp up-lock control valve when...
- the ramp is in the fully up position.
- Which ramp and cargo door system component completes the circuit to the ramp control valve?
- Locking cylinder unlocked switch.
- The left-hand and right-hand position switches in the ramp and cargo door system supply power to the ramp up-lock control valve during...
- closing of the ramp.
- What happens if the pilot uses the ramp and cargo door switch while the aircraft is in flight?
- Ramp and door open at the same time.
- When the cargo ramp moves to the fully closed position, but will not lock, the most probably cause is the...
- ramp position switches.
- What is used to minimize the initial torque shock to the drive coupling at the beginning of fuel-air starter operation?
- Slip-type clutch.
- What happens to the air in a pneumatic starter system when the regulating-and shutoff valve closes?
- Vented overboard.
- When a pneumatic starter reaches maximum speed, the ground circuit to the starter relay is opened by...
- centrifugal switch.