Electronics

Question 1

The primary source of AC power for the UH-60M is provided by

Answer 1

two 3-phase, 400 Hz, 115/200 volt, oil cooled ac generators

Question 2

The batteries will provide uninterrupted DC emergency power for approximately

Answer 2

a. 15 minutes

Question 3

The AC REF BUS DEGRAD advisory, with no loss of power, indicates

Answer 3

a. one of the two transformers has failed

Question 4

All MFD’s have turned off except for the pilots inboard MFD. With the indications shown on the EICAS below, what is the emergency?

Answer 4

a. GEN 1 FAIL and GEN 2 FAIL

Question 5

If a dual converter failure were to occur, which busses would be without power?

Answer 5

a. the #1 and #2 DC primary buses

Question 6

When operating, the APU draws its fuel from a. the No. 1 fuel cell

Answer 6

a. the No. 1 fuel cell

Question 7

If the FUEL 1 BYPASS caution appears what is wrong with the fuel system?

Answer 7

a. The #1 engine fuel filter is being bypassed because it is clogged with contamination filtered from the fuel.

Question 8

The engine-driven fuel boost pump mounted on the accessory module of the engine is driven by

Answer 8

a. the NG section of the engine

Question 9

Operation of the submerged fuel boost pumps is limited in order to

Answer 9

a. minimize operation with pressurized fuel lines

Question 10

What fuel system component purges the fuel from the engine when the engine is shut down?

Answer 10

a. Overspeed Drain Valve