Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

T-38 Systems > Electrical System > Flashcards

Electrical System Flashcards

1
Q

When you lose a generator in the T-38C, what happens?

A

The other generator normally picks up the load

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The ________ normally supplies power to the DC busses when an engine is operating

A

Transformer rectifier units

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

If the left airframe mounted gearbox fails, which two lights will illuminate?

A
  • The left generator light will illuminate

- The utility hydraulic light will illuminate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What components are powered by the static inverter?

A
  • First engine start on the ground or during flight
  • Operation of right engine autosyn instruments (fuel flow, oil pressure) and left and right fuel quantity sensors
  • Oxygen quantity indicators
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What must you do to extend and illuminate the landing-taxi light?

A
  • Turn on the position lights
  • Extend the gear
  • Turn on the landing light switch
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

If the MASTER CAUTION light and RIGHT GENERATOR light illuminate, how can you determine if the left generator is not powering the right AC bus?

A
  • Check for blank HUD

- Check for FAIL indications on the right oil pressure and fuel flow indicators, and on all fuel quantity displays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

In the event of complete AC power failure, what light(s) will function?

A

The flood lights will illuminate provided the flood light control knob is out of the OFF position

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The Caution Light Panel lights operate in DIM providing the instrument light rheostat is out of the ________ position

A

OFF

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The Caution Light Panel lights operate in DIM providing the Caution light BRIGHT/DIM switch is moved momentarily to the ________ position

A

DIM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The Caution Light Panel lights operate in DIM providing there is ________ power available

A

AC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

True or false: The position lights may be operated in the BRIGHT or DIM position depending only on the setting of the position BRIGHT/DIM switch and proper electrical power.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How is the aircraft electrical system (AC and DC) energized on the ground without the engines operating?

A

External power unit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Identify the AC-powered instruments:

  • Oil Pressure indicators
  • Nozzle position indicators
  • Fuel flow indicators
  • Oxygen quantity indicator
  • Flap position indicator
  • Fuel quantity indicator
  • EGT indicators
  • Hydraulic pressure indicators
A
  • Oil Pressure indicators
  • Fuel flow indicators
  • Oxygen quantity indicator
  • Fuel quantity indicators
  • Hydraulic pressure indicator
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which statements describe the purpose and operating characteristics of the static inverter? (Select more than one answer)

a. It can be used as an alternate source of DC power.
b. It operates right AC-powered instruments during starting of the right engine.
c. DC power is converted to AC power.
d. It can be activated through the use of fuel/oxygen check switch.
e. It can operate all AC-powered instruments.

A
  • It operates right AC-powered instruments during starting of the right engine.
  • DC power is converted to AC power.
  • It can be activated through the use of fuel/oxygen check switch.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

At what engine RPM range should the generators come on line?

A

43 – 48% RPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which of the following components would fail in the event of complete AC power failure? Select more than one

a. Fuel boost pumps
b. Crossfeed switch and valve
c. Trim
d. HUD
e. Fire warning
f. Wing flaps
g. Mission Data Processor

A
  • Fuel boost pumps
  • Trim
  • HUD
  • Wing flaps
  • Mission Data Processor
17
Q

What AC-powered equipment can be operated when both generators fail? (Select more than one answer.)

a. Left AC-powered engine instruments
b. Right AC-powered engine instruments
c. Fuel quantity indicators
d. Left and right engine ignition

A
  • Right AC-powered engine instruments
  • Fuel quantity indicators
  • Left and right engine ignition
18
Q

True or false: With no malfunctions, all DC and AC electrical components can be powered with only the right engine running?

A

True

19
Q

What is the primary cockpit indication if the left airframe mounted gearbox fails to shift?

A

LEFT GENERATOR and MASTER CAUTION lights illuminate as RPM passes 65 to 75%

20
Q

Which instruments will be operational with both generators inoperative? Select more than one.

a. RPM and fuel flow indicators
b. RPM and nozzle position indicators
c. RPM and EGT indicators
d. Nozzle position and oil pressure indicators

A
  • RPM and nozzle position indicators

- RPM and EGT indicators

21
Q

How are the Warning/Caution/Advisory System lights powered?

A

By the AC bus in DIM position and by the left essential DC bus in BRIGHT operation

22
Q

What is the approximate life of the battery after TRU failure?

A

15 minutes

23
Q

Which of the following statements best describe battery operation? (Select more than one answer.)

a. The battery relay will close, and the battery will charge anytime external AC power is supplied to the aircraft.
b. If only one Transformer Rectifier Unit fails, the battery picks up its load.
c. If external power is connected, the battery should be turned ON.
d. If the battery relay does not close, it is impossible for the battery to be charged.

A
  • If external power is connected, the battery should be turned ON.
  • If the battery relay does not close, it is impossible for the battery to be charged.
24
Q

Which of the following statements describe a Transformer Rectifier Unit malfunction? (Select more than one answer.)

a. Failure of one Transformer Rectifier Unit will cause a partial DC electrical malfunction.
b. Steady illumination of the XMFR RECT OUT caution light indicates that both Transformer Rectifier Units have failed.
c. A faulty Transformer Rectifier Unit is indicated when the XMFR RECT OUT caution light illuminates momentarily as the wing flaps are being lowered.
d. The battery will supply DC power to the essential busses when both Transformer Rectifier Units have failed.

A
  • Steady illumination of the XMFR RECT OUT caution light indicates that both Transformer Rectifier Units have failed.
  • The battery will supply DC power to the essential busses when both Transformer Rectifier Units have failed.
25
Q

During normal operation, what is the primary DC power source?

A

Transformer rectifier units

26
Q

Which of the following aircraft components are inoperative when there is complete DC electrical failure? (Select more than one answer.)

a. HUD
b. Flight controls
c. MFD
d. Afterburner operation
e. Crossfeed operation
f. Fuel boost pumps
g. Landing Gear Indicators (Bright Mode)
h. Trim
i. Fire warning lights
j. EED

A

c. MFD
d. Afterburner operation
e. Crossfeed operation
g. Landing Gear Indicators (Bright Mode)
i. Fire warning lights
j. EED

27
Q

How will you be warned when one Transformer Rectifier Unit fails?

A

AVIONICS alert message on the HUD/MFD and a PFL display

28
Q

True or false: When the external power unit is connected to the aircraft, all electrical busses are energized?

A

True

29
Q

The TRUs receive their power from the ________ busses and supply power to the ________ busses

A

AC, DC

30
Q

The battery must have ________ volts minimum to connect to the DC busses when placing the battery switch ON

A

18

31
Q

True or false: Anytime the MASTER CAUTION and XMFR RECT OUT caution lights blink, it is necessary to abort the mission

A

False

32
Q

Which of the following is a DC-powered instrument?

a. Flap position indicator
b. Oxygen quantity indicator
c. HUD
d. Hydraulic pressure indicators

A

Flap position indicator

33
Q

With failure of both Transformer Rectifier Units and a dead battery

A
  • An airstart is not possible

- Gear must be lowered by the alternate system

34
Q

If both TRUs fail (Battery in high state of charge),

A

An airstart is possible with battery power only

35
Q

How can you check the battery to see if it is charged sufficiently?

A

Turn ON the battery switch prior to connecting the APU

36
Q

Which of the following are true concerning a momentary blink of the XFMR RECT OUT caution light?

a. The battery voltage is momentarily overriding the DC busses voltage.
b. This momentary condition is normal when operating high DC load equipment.
c. Both a and b are correct.
d. None of the above.

A

Both a and b are correct.

T-38 Systems (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions