Unit Three Review Questions

STUDENT GUIDE T-39N/G NATOPS

UNIT THREE REVIEW QUESTIONS

External power requirements are:

Utility: ____ volts ________ amps

Start:

____ volts ________ amps

The battery bus is connected to two __________ volt batteries through __________.

3. The Starter bus is powered either by _______________ connected in (series/parallel) or by

_______________

4. The Starter bus supplies power to the starter-generators and engine instruments necessary

to monitor the start. (TRUE/FALSE)

5. The Paralleling bus is powered by the _______________ bus, the __________ or

__________.

6. The DC Essential bus is normally powered by the _______________ bus; in the event of

a dual generator failure in flight, it receives power directly from the__________________

bus.

The ESS position of the battery switch should be selected only if _______________.

8. With a single generator failure, Mission DC bus(es) will be shed. Mission

bus(es) may be regained by placing the mission bus switch to EMER. (TRUE/FALSE)

9. On deck, with a single generator operating, the Secondary bus will remain unpowered.

(TRUE/FALSE)

10. Aircraft AC power is supplied by two volt-amp inverters or one _______________ volt-

amp inverter, which in turn receive DC power from the _______________ bus.

11. If both the MAIN and STANDBY inverters fail, AC power is available from the

_______________ inverter to the _______________ bus only.

12. AC power from the MAIN or STANDBY inverters power the AC _______________ bus,

which in turn powers the _______________ bus, one 26 VAC bus and four 5 VAC buses.

13. In the event of a loss of all AC power, the _______________ caution light will

illuminate.

14. Mission AC inverters are powered by Mission DC bus. (TRUE/FALSE)

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ELECTRICAL SYSTEM