1.
What are the normal fuel flow limits for the J-85 engine operating at Idle?
Correct Answer
A. 400-600 PpH
Explanation
The normal fuel flow limits for the J-85 engine operating at Idle are 400-600 PPH.
2.
Where in the cockpit would you find the backup UHF radio and the transmit key?
Correct Answer
C. Right vertical instrument panel, right throttle lever
Explanation
The backup UHF radio and the transmit key can be found on the right vertical instrument panel, near the right throttle lever. This location allows for easy access and control of the backup radio system in case the primary UHF radio fails.
3.
What is normal oil pressure at Military and Afterburner (MAX) Power?
Correct Answer
A. 25-50 PSIG
Explanation
The normal oil pressure at Military and Afterburner (MAX) Power is between 25-50 PSIG.
4.
The maximum duty cycle for the left and right ignition system consists of:
Correct Answer
A. 4 consecutive 30 second starts, then 3 minutes off, then 4 more 30 second starts then 23 minutes off.
Explanation
The correct answer is the option that allows for the maximum duty cycle for the left and right ignition system. This means that the system can perform the most consecutive starts without overheating or causing damage. The option that states "4 consecutive 30 second starts, then 3 minutes off, then 4 more 30 second starts then 23 minutes off" provides the longest duration of starts (8 starts in total) with sufficient time for cooling off periods in between. This ensures that the ignition system can operate effectively and safely without exceeding its maximum duty cycle.
5.
What is the maximum acceleration time from Idle to Military Power on the J-85 engine?
Correct Answer
A. 10 seconds
Explanation
The maximum acceleration time from Idle to Military Power on the J-85 engine is 10 seconds. This means that it takes a maximum of 10 seconds for the engine to go from idle to its highest power setting.
6.
If engine Exhaust Gas Temperature (EGT) does not begin to rise in _____ seconds after the first indication of fuel flow, abort start by placing throttles in the OFF position.
Correct Answer
A. 12
Explanation
If the engine Exhaust Gas Temperature (EGT) does not begin to rise within 12 seconds after the first indication of fuel flow, it is recommended to abort the start by placing the throttles in the OFF position. This is important because a delayed rise in EGT could indicate a potential issue with the engine start-up process, and it is safer to stop the start-up procedure to prevent any further damage or hazards.
7.
Engine oil level must be checked within _____ minutes after engine shutdown.
Correct Answer
A. 15
Explanation
After the engine is shut down, it is recommended to check the engine oil level within 15 minutes. This is because during operation, the engine oil circulates throughout the engine and various components, ensuring proper lubrication and cooling. After the engine is turned off, the oil begins to settle, and checking the level within 15 minutes allows for an accurate measurement before the oil fully settles. Waiting longer than 15 minutes may result in an inaccurate reading as the oil may have already settled in the oil pan.
8.
When trimming the J-85 engine in the T-38C aircraft, which switch position is correct?
Correct Answer
A. Cabin Pressure in Ram Dump
Explanation
When trimming the J-85 engine in the T-38C aircraft, the correct switch position is "Cabin Pressure in Ram Dump." This means that the cabin pressure should be set to the ram dump mode. Ram dump is a mode in which the cabin pressure is automatically adjusted to maintain a safe and comfortable environment for the occupants of the aircraft. This switch position ensures that the cabin pressure is properly regulated during the engine trimming process.
9.
On engine start, the generator for that engine should come online at approximately what RPM percentage?
Correct Answer
A. 43-48%
Explanation
During engine start, the generator for that engine should come online at approximately 43-48% RPM percentage. This range indicates the specific RPM range at which the generator is designed to activate and start generating power. It is important for the generator to come online within this RPM range to ensure a smooth and efficient start-up process for the engine.
10.
At what engine RPM percentage will the aircraft mounted gearbox shift into high gear?
Correct Answer
A. 65-75%
Explanation
The correct answer is 65-75%. This range indicates that the aircraft mounted gearbox will shift into high gear when the engine RPM is between 65% and 75% of its maximum capacity. This suggests that the gearbox is designed to optimize performance and efficiency within this RPM range.
11.
With aircraft engines running, should you encounter a generator failure, refrain from attempting to reset the generator more than _______ time(s) due to danger of generator burning?
Correct Answer
A. 1
Explanation
If an aircraft engine is running and there is a generator failure, it is dangerous to attempt to reset the generator more than one time. This is because there is a risk of the generator burning.
12.
When engines are being operated, how far should you stay away from the engine inlet?
Correct Answer
A. 12 feet
Explanation
When engines are being operated, it is recommended to stay at least 12 feet away from the engine inlet. This distance is necessary to ensure personal safety and prevent any potential hazards that may arise from the engine's operation. Being too close to the engine inlet can expose individuals to high temperatures, strong winds, and flying debris, which can be dangerous. By maintaining a safe distance of 12 feet, the risk of injury or accidents can be minimized.
13.
If the left engine is started before the right engine, what is required in order for instruments to work?
Correct Answer
A. External Electrical Power
Explanation
In order for the instruments to work when the left engine is started before the right engine, external electrical power is required. This means that the aircraft needs to be connected to an external power source to provide the necessary electrical energy for the instruments to function properly. The other options mentioned in the question, such as the MDP being in the ON position, the MDP screen switch being in the Day or Night position, and the EGI selector switch being in the ON position, are not directly related to the instruments working and therefore not the correct answer. The fully charged aircraft battery is also not sufficient on its own to power the instruments in this scenario.
14.
At what Exhaust Gas Temperature (EGT) would you choose to abort and exit the aircraft during engine start on the J-85 engine?
Correct Answer
A. 925°C
Explanation
During engine start on the J-85 engine, if the Exhaust Gas Temperature (EGT) reaches 925°C, it is recommended to abort and exit the aircraft. This temperature threshold is likely determined by the engine manufacturer as a safety precaution to prevent any potential damage or failure that could occur if the EGT exceeds this limit during engine start.
15.
Within steady state limits, the maximum RPM flux is +/-_____ between ________%.
Correct Answer
A. 1, 99-100
Explanation
Within steady state limits, the maximum RPM flux can vary between +/- 1 and the percentage range is 99-100.
16.
What is the maximum permissible oil pressure flux allowed at all RPM's on the J-85 engine?
Correct Answer
A. +/-2 PSIG
Explanation
The maximum permissible oil pressure flux allowed at all RPM's on the J-85 engine is +/-2 PSIG. This means that the oil pressure can fluctuate up to 2 pounds per square inch gauge (PSIG) above or below the desired pressure level. This tolerance range ensures that the engine's oil system is able to maintain a stable and consistent pressure, which is crucial for proper lubrication and functioning of the engine components. Any larger fluctuations in oil pressure could potentially lead to engine damage or failure.
17.
Should you have a No Start when attempting to start the installed J-85 engine, how long should you wait before attempting to restart?
Correct Answer
A. 2 minutes
Explanation
If you experience a No Start when trying to start the J-85 engine, you should wait for 2 minutes before attempting to restart. This waiting period allows time for any potential issues to resolve themselves and for the engine to cool down if overheating was the cause of the initial problem. Restarting too quickly could potentially worsen the issue or cause further damage to the engine.
18.
When fuselage aft section or engine bay doors are open or removed, what engine RPM should not be exceeded during engine run?
Correct Answer
A. 75%
Explanation
When the fuselage aft section or engine bay doors are open or removed, the engine RPM should not exceed 75% during engine run. This is because the open or removed sections can create an imbalance in the airflow, which can affect the engine's performance and potentially cause damage. Keeping the engine RPM below 75% ensures that the engine operates within safe limits and minimizes the risk of any issues occurring.
19.
What is minimum-maximum oil pressure in Idle on the J-85 engine?
Correct Answer
A. 5-20 PSIG
Explanation
The minimum-maximum oil pressure in Idle on the J-85 engine is 5-20 PSIG. This means that the oil pressure should not drop below 5 PSIG and should not exceed 20 PSIG when the engine is in idle mode. Maintaining oil pressure within this range is important for proper lubrication and functioning of the engine components.
20.
Throttle alignment checks are accomplished with the ________ engine at ________% RPM
Correct Answer
A. Left, 94
Explanation
Throttle alignment checks are performed with the left engine at 94% RPM.
21.
What is the maximum allowable transient RPM on the J-85 engine?
Correct Answer
A. 107%
Explanation
The maximum allowable transient RPM on the J-85 engine is 107%. This means that the engine can operate at a maximum of 107% of its normal operating RPM for a short period of time during transient conditions. This allows for a temporary increase in power output when needed, such as during takeoff or maneuvering. Operating the engine at higher RPMs for extended periods of time can cause damage and reduce its lifespan, so the maximum allowable transient RPM is set to ensure safe and reliable operation.
22.
What is the maximum permissible fuel flow flux at Idle Power on the J-85 engine?
Correct Answer
A. +/-25 PpH
Explanation
The maximum permissible fuel flow flux at Idle Power on the J-85 engine is +/-25 PPH. This means that the fuel flow can vary by a maximum of 25 pounds per hour at idle power.
23.
While operating the J-85 engine in the T-38C aircraft at any stabilized engine RPM, a sudden change of _____ PSIG in oil pressure is cause for engine shutdown and investigation.
Correct Answer
A. 10
Explanation
A sudden change of 10 PSIG in oil pressure while operating the J-85 engine in the T-38C aircraft at any stabilized engine RPM is cause for engine shutdown and investigation. This indicates that a significant and abrupt fluctuation in oil pressure could potentially indicate a malfunction or failure in the engine system, which requires immediate attention and investigation to ensure the safety and functionality of the aircraft.
24.
What is the maximum permissible fuel flow flux at Military Power on the J-85 engine?
Correct Answer
C. +/-50 PpH
Explanation
The maximum permissible fuel flow flux at Military Power on the J-85 engine is +/-50 PPH. This means that the fuel flow can fluctuate by a maximum of 50 pounds per hour, either higher or lower than the specified value, while operating at Military Power.
25.
What is minimum-maximum oil pressure in Afterburner (MAX) on the J-85 engine?
Correct Answer
A. 20-55 PSIG
Explanation
The minimum-maximum oil pressure in the Afterburner (MAX) on the J-85 engine is 20-55 PSIG.
26.
What is the correct Afterburner (MAX) RPM for the J-85 engine used in the T-38C?
Correct Answer
A. 99-100%
Explanation
The correct Afterburner (MAX) RPM for the J-85 engine used in the T-38C is 99-100%.
27.
What is the maximum continuous operating time for a J-85 engine being run in Afterburner (MAX) Power?
Correct Answer
A. 5 minutes
Explanation
The correct answer is 5 minutes. This is the maximum continuous operating time for a J-85 engine being run in Afterburner (MAX) Power. Afterburner is a mode in which additional fuel is injected into the exhaust stream of a jet engine to provide extra thrust. However, running the engine in this mode for too long can cause excessive heat buildup and potential damage to the engine components. Therefore, the maximum continuous operating time in Afterburner power is limited to 5 minutes to ensure the engine's safety and longevity.
28.
Maximum allowable oil consumption of the J-85 engine is _______ ounces per hour.
Correct Answer
A. 6
Explanation
The maximum allowable oil consumption of the J-85 engine is 6 ounces per hour.
29.
What is the maximum continuous operating time for a J-85 engine being run at Military Power?
Correct Answer
A. 5 minutes
Explanation
The maximum continuous operating time for a J-85 engine being run at Military Power is 5 minutes. This means that the engine can operate continuously at its maximum power output for a duration of 5 minutes without any adverse effects. It is important to adhere to this time limit to prevent overheating or damage to the engine.
30.
When retarding throttles from military to Idle power, a momentary flicker of the generator light is acceptable, providing the generator comes back online?
Correct Answer
A. 1 second
Explanation
When retarding throttles from military to Idle power, a momentary flicker of the generator light is acceptable, providing the generator comes back online within 1 second. This means that a temporary interruption in the generator's operation is allowed, as long as it quickly resumes functioning.
31.
What is the Variable Exhaust Nozzle (VEN) position at Afterburner (MAX) on the J-85 engine?
Correct Answer
A. 50-85%
Explanation
The Variable Exhaust Nozzle (VEN) position at Afterburner (MAX) on the J-85 engine is between 50-85%. This means that the nozzle is adjusted to a position where it allows the maximum amount of exhaust gases to flow out, resulting in increased thrust and power output. The specific range of 50-85% indicates the optimal positioning of the nozzle for maximum performance during afterburner operation.
32.
Once starting air has been applied during engine start of the J-85 engine, engine speed must reach a maximum of _____% RPM within ________ seconds before advancing throttles to Idle.
Correct Answer
A. 14, 12
Explanation
During the engine start of the J-85 engine, once starting air has been applied, the engine speed must reach a maximum of 14% RPM within 12 seconds before advancing the throttles to Idle.
33.
If Fuel Shutoff Switch is placed in the closed position while the engine speed is in excess of ______ RPM and the throttle is out of the off position, what component may be damaged?
Correct Answer
A. 10%, engine driven fuel pump.
Explanation
If the Fuel Shutoff Switch is closed while the engine speed is above a certain RPM and the throttle is not in the off position, the engine driven fuel pump may be damaged. This suggests that the engine driven fuel pump is sensitive to the fuel shutoff switch being closed under these conditions.
34.
What is the Variable Exhaust Nozzle (VEN) position at Military power on the J-85 engine?
Correct Answer
A. 0-20%
Explanation
The Variable Exhaust Nozzle (VEN) position at Military power on the J-85 engine is 0-20%.
35.
When running aircraft engines at night, which lights must be on?
Correct Answer
A. Position and Beacon
Explanation
When running aircraft engines at night, it is important to have the Position and Beacon lights on. The Position lights, also known as navigation lights, are used to indicate the position and direction of the aircraft to other pilots and ground personnel. These lights are typically located on the wings and tail of the aircraft. The Beacon light, on the other hand, is a rotating or flashing light located on the top or bottom of the aircraft. It is used to increase visibility and alert others of the aircraft's presence. Having both the Position and Beacon lights on ensures maximum visibility and safety during night operations.
36.
With the J-85 installed engine running at Idle Power, what is the maximum allowable Exhaust Gas Temperature (EGT)?
Correct Answer
A. 650°C
Explanation
At idle power, the maximum allowable Exhaust Gas Temperature (EGT) for the J-85 installed engine is 650°C.
37.
When performing flap operational checks, what is the maximum amount of Flap indication error?
Correct Answer
A. +/-5%
Explanation
During flap operational checks, the maximum amount of flap indication error is +/-5%. This means that the actual position of the flaps can deviate by up to 5% from the indicated position. This tolerance allows for minor variations in the flap system and ensures that the indicated position is within an acceptable range of the actual position.
38.
Engine inlet icing can occur without external signs. Avoid operating engines at temperatures between _____________ fahrenheit, if the dew point is within ______ of the dry bulb temperature.
Correct Answer
A. 14°-41°, 7°
39.
What is the Variable Exhaust Nozzle (VEN) position at Idle on the J-85 engine?
Correct Answer
A. 77-92%
Explanation
The Variable Exhaust Nozzle (VEN) position at Idle on the J-85 engine is 77-92%. This means that the VEN is adjusted to be within this range when the engine is at idle. The VEN helps to control the exhaust flow and optimize engine performance at different operating conditions.
40.
What are the normal fuel flow limits for the J-85 engine operating at Military Power?
Correct Answer
A. 2100-2700 PpH
Explanation
The normal fuel flow limits for the J-85 engine operating at Military Power are 2100-2700 PPH.
41.
What is the normal Exhaust Gas Temperature (EGT) limit for the J-85 engine operating in Afterburner (MAX)?
Correct Answer
A. 630°-650°C
Explanation
The normal Exhaust Gas Temperature (EGT) limit for the J-85 engine operating in Afterburner (MAX) is between 630°C and 650°C.
42.
To ensure that the engine anti-ice valve is operating properly, the engine throttle should be at what engine RPM when testing?
Correct Answer
A. 94%
Explanation
To ensure that the engine anti-ice valve is operating properly, the engine throttle should be at 94% engine RPM when testing. This is because operating the engine at this specific RPM allows for optimal conditions to test the functionality of the anti-ice valve. It is important to test the valve at the correct RPM to ensure that it is functioning effectively and can prevent ice formation on the engine.
43.
The J-85 engine ignition system is energized for ___________ seconds, when either the start button is pressed or the throttle is placed in the Afterburner (MAX) position.
Correct Answer
A. 30+/-3
Explanation
The J-85 engine ignition system is energized for approximately 30 seconds, with a possible variation of plus or minus 3 seconds. This occurs when either the start button is pressed or the throttle is placed in the Afterburner (MAX) position.
44.
During cold weather starts oil pressure usually exceeds _______ but can go up to _______.
Correct Answer
A. 55 PSIG, 185 PSIG
Explanation
During cold weather, the viscosity of the oil increases, leading to higher oil pressure. The lower limit of the oil pressure during cold weather is 55 PSIG, but it can go up to 185 PSIG.
45.
Prior to advancing the throttles above idle, ensure hand is always on the throttle and ________________.
Correct Answer
A. Pump up and hold brakes
Explanation
Before advancing the throttles above idle, it is important to ensure that the hand is always on the throttle and the brakes are pumped up and held. This is necessary to maintain control and prevent the aircraft from moving forward unexpectedly. The other options listed, such as pushing the start button, having the MDP switch in the ON position, and turning on the rotating beacon switch, are not directly related to the action of advancing the throttles and maintaining control of the aircraft.
46.
When testing the engine anti-ice valve, which cockpit instrument is monitored?
Correct Answer
A. Exhaust Gas Temperature (EGT)
Explanation
The engine anti-ice valve is responsible for preventing ice from forming on the engine during flight. Monitoring the Exhaust Gas Temperature (EGT) is crucial for testing the valve because it indicates the temperature of the gas leaving the engine. If the EGT is too low, it could mean that the anti-ice valve is not functioning properly and may need to be inspected or repaired. Therefore, monitoring the EGT helps ensure the effectiveness of the engine anti-ice system.
47.
When engines are running in the T-38C aircraft, the Cabin Pressure switch should be in the _________________.
Correct Answer
A. As required position
Explanation
The correct answer is "As required position." When engines are running in the T-38C aircraft, the Cabin Pressure switch should be in the "As required position" to maintain the desired cabin pressure. The position of the switch may vary depending on the specific requirements of the flight and conditions, so it needs to be adjusted accordingly to ensure proper cabin pressurization.
48.
When installed engines are being operated in the T-38C aircraft, the exhaust danger area is within a _____ segment for a distance of ______ feet.
Correct Answer
A. 40°, 80
Explanation
When installed engines are being operated in the T-38C aircraft, the exhaust danger area is within a 40° segment for a distance of 80 feet. This means that the area where the exhaust from the engines poses a danger extends 40° from the aircraft in both directions, covering a total arc of 80°. The danger area extends for a distance of 80 feet from the aircraft, indicating the distance within which individuals should exercise caution to avoid the hot exhaust.
49.
After all work has been accomplished and before engine start, remove static grounding cable, inspect to ensure all accessories and attaching parts are secure and that work areas are free of _____________.
Correct Answer
A. Foreign objects
Explanation
Before starting the engine, it is important to ensure that the work area is free of foreign objects. This is necessary to prevent any potential damage to the engine or aircraft systems. Foreign objects such as tools, debris, or loose parts can pose a safety risk and may interfere with the proper functioning of the engine. Therefore, it is crucial to inspect and remove any foreign objects before starting the engine.
50.
Where is the Backup UHF radio selector switch located in the front cockpit of the T-38C aircraft?
Correct Answer
A. Left pedestal
Explanation
The Backup UHF radio selector switch in the front cockpit of the T-38C aircraft is located on the left pedestal.