Volume 2. 2A651 CDC ( Q 45-58)

1. What is the total gear reduction ratio of the RGB?

3.125:1.

4.333:1.

12.85:1.

13.54:1.

2. On the T56 turboprop engine, what is the overall reduction ratio of the RGB's main reduction gear train?

.3125 to 1.

4.333 to 1.

13.54 to 1.

13,820 to 1.

3. The major sections of a turboprop engine are the power unit,torquemeter assembly, and

Turbine assembly.

Compressor assembly.

Combustion assembly

RGB assembly.

4. The torquemeter exciter wheels are in phase when

The shaft power output is transmitted from the power unit.

Negative or positive torque is transmitted to the torque indicator.

The rectangular teeth on the exciter wheels are aligned at zero torque.

There is a change in the torque transmitted to the torque shaft exciter wheel

5. On the T56 turboprop engine, how many stages of reduction are in the RGB's main reduction gear train?

1.

2.

3.

4.

6. On the T56 turboprop engine, which compressor section assembly disperses compressor discharge air and directs it to the combustion chambers?

Diffuser.

Compressor rotor.

Compressor housing.

Compressor air inlet housing.

7. Which valve in the propeller control assembly is actuated by the NTS actuator rod to increase propeller blade angle?

Pilot.

Feather.

Beta backup.

Alpha backup

8. On the T56 turboprop engine, there are mounting pads on the aft side of the accessory drive for the fuel control, fuel pump,and

Speed-sensitive valve.

Engine main oil pump.

Speed-sensitive control.

External scavenge oil pump.

9. In the T56 engine, which RGB component rotates at the same speed as the power unit rotors?

Sun gear.

Ring gear.

Main drive gear.

Pinion input gear.

10. The perpose of the T56 safety coupling is to

Prevent overspeed of the propeller.

Increase propeller pitch as negative torque occurs.

Maintain constant engine speed by decreasing propeller blade angle.

Disconnect the power section from the RGB assembly

11. The propeller brake is in which position when the aircraft is on the ground and the engine is stopped?

Locked.

Applied

Engaged.

Released.

12. What is not a propeller brake positions?

Locked.

Applied.

Engaged.

Released

13. The amount of twisting deflection is determined by the

Torque shaft.

Reference shaft.

Safety coupling