1.
(201) During operation of the EPU-6/E frequency converter it is determined that E and F pin voltage is not needed for the aircraft. The operator places the loop/bypass/28V to aircraft switch to what position?
A. 
B. 
C. 
D. 
2.
(201) What components receive potential directly from the input auto transformer.
A. 
Input circuit breakers and display power supply.
B. 
Control transformer and voltage control.
C. 
SCR voltage regulator and phase sequence transformers.
D. 
Analog board and alarm display.
3.
(202) What component on the EPU-6/E frequency converter must be inspected prior to use?
A. 
B. 
Wiring for secure mounting.
C. 
Maintenance panels for corrosion.
D. 
Interior air vents for secure mounting.
4.
(202) What is the minimum interval at which the input and output terminals of the EPU-6/E are inspected?
A. 
B. 
C. 
D. 
5.
(202) During operation of the EPU-6/E frequency converter the operator determines that there is an under voltage (UV) fault problem with the unit. What component could be malfunctioning?
A. 
The audible alarm switch is in the silence position.
B. 
The voltage control board potentiometer is shorted.
C. 
The ouput trim potentiometer is centered.
D. 
The analog board has failed.
6.
(202) During operation of the EPU-6/E frequency converter the operator determines that one phase voltage is lower than the other two phases. What could cause the malfunction?
A. 
Malfunctioning transistor.
B. 
Improper SCR firing adjustment.
C. 
Burnt control transformer fuse.
D. 
Loose push-on connector on the output filter capacitor.
7.
(203) What is the function of the deswirl ring on an A/M32A-95 gas turbine compressor?
A. 
B. 
C. 
Smooth turbulent air flow.
D. 
8.
(203) What component on an A/M32A-95 gas turbine compressor isolates the second stage air from the operation of the first stage compressor?
A. 
B. 
C. 
D. 
9.
(203) What A/M32A-95 gas turbine compressor engine component accelerates hot expanding gases and directs them into the nozzle ring?
A. 
B. 
C. 
D. 
10.
(204) What prevents engine operation of an A/M32A-95 gas turbine compressor if oil pressure is low?
A. 
B. 
C. 
D. 
Oil pressure relief valve.
11.
(204) What prevents overpressurization of the bearing cavity on an A/M32A-95 gas turbine compressor?
A. 
B. 
C. 
D. 
12.
(204) The acceleration limiter valve on the A/M32A-95 gas turbine compressor operates a poppet valve to control fuel flow to the atomizer using control air pressure combined with
A. 
B. 
C. 
D. 
13.
(204) On an A/M32A-95 gas turbine compressor what chambers are pressurized when the butterfly valve is closed?
A. 
B. 
C. 
D. 
14.
(204) What component on the A/M32A-95 gas turbine compressor closes to complete the electrical circuit to the fuel solenoid and ignition unit?
A. 
B. 
35 percent centrifugal speed switch.
C. 
D. 
15.
(204) Refer to foldout 2. The A/M32A-95 runs up to 60 percent but the battery is not charging. What is the probable cause of this trouble?
A. 
K4 energized and its contacts closed.
B. 
K3 de-energized and its contacts opened.
C. 
K4 de-energized and its contacts closed.
D. 
K3 de-energized and the contacts did not remain closed.
16.
(204) Refer to foldout 2. During an operational check of an A/M32A-95 gas turbine compressor, you place the air load switch S2 in the ON position. the butterfly valve starts to open at 95 percent. What do you check?
A. 
B. 
C. 
D. 
17.
(204) Refer to foldout 2. What component on an A/M32A-95 gas turbine compressor energizes SV4?
A. 
B. 
C. 
D. 
18.
(205) What preliminary set-up step, if skipped, would prevent the A/M32A-95 gas turbine compressor from starting?
A. 
Ensure the turbine air inlet and exhaust outlets are free of obstructions.
B. 
C. 
D. 
Open and secure the exhaust door.
19.
(205) Which switch on the A/M32A-95 gas turbine compressor starts the automatic starting cycle?
A. 
B. 
C. 
D. 
20.
(205) Refer to foldout 2. The A/M32A-95 engine cranks but doesn't start. What is the probable cause of this trouble?
A. 
B. 
C. 
D. 
21.
(206) While you are operating an MA-3D air conditioner, the output air temperature is too high, as you set the temperature control to maximum cooling. The temperature controller sends a signal to
A. 
B7 which steps closed to meter refrigerant into the evaporator.
B. 
B7 which steps open to meter refrigerant into the evaporator.
C. 
The quench valve which opens to aid in cooling.
D. 
S1 and S2 which open to aid in cooling.
22.
(206) The temperature controller on an MA-3D air conditioner opens the hot gas bypass valve if the
A. 
Suction pressure is too high so the boiling point of the refrigerant must be decreased to decrease the output air temperature.
B. 
Air pressure is too low so the boiling point of the R134a must be increased.
C. 
Suction pressure is too low so the boiling point of the refrigerant must be increased to increase the output air temperature.
D. 
Suction air pressure is too high so the boiling point of the refrigerant can be decreased.
23.
(206) What component of an MA-3D air conditioner increases the ambient air temperature approximately 60 degrees Fahrenheit?
A. 
B. 
C. 
D. 
24.
(206) The heat sink on the MA-3D
A. 
Circulates the ethylene glycol/water solution.
B. 
Cools the ethylene glycol/water solution.
C. 
Cools discharge air from the blower.
D. 
25.
(207) You place the MA-3D air conditioner SW1 in the START position, but the engine does not operate. What is the probable cause of this trouble?
A. 
Override switch is not closed.
B. 
C. 
Overspeed switch is closed.
D. 
Oil pressure switch is closed.