C130H Engines Test Questions with Correct Answers Latest Update 2025
Which of the following is true concerning the C-130 engine?
a. The engines are only interchangeable on the same wing since the direction of rotation is
opposite on the left and right wings
b. Reverse thrust is obtained by reversing the direction of rotation of the propeller
c. Throttle inputs adjust power by changing the fuel flow, and therefore, turbine inlet
temperature and torque, rather than engine speed
d. The aircraft becomes less fuel efficient at higher altitudes because of thrust loss caused by
loss of propeller efficiency - Answers c. Throttle inputs adjust power by changing the fuel flow,
and therefore, turbine inlet temperature and torque, rather than engine speed
Which of the following are engine-driven accessory drive subassemblies?
a. Oil pumps, Fuel pump, Fuel control, Speed sensitive valve, Speed sensitive control
b. Tach generator, Hydraulic pump, Oil pump, Starter, Generator
c. Speed sensing switch, Speed sensitive control, Oil pump, Free air gage, Fuel metering valve
d. Throttle lockout solenoid, Diffuser, Manifold drain valve, Hydraulic pump, Speed sensitive
control - Answers a. Oil pumps, Fuel pump, Fuel control, Speed sensitive valve, Speed sensitive
control
Which of the following is true of the accessory drive housing?
a. Contains switches to control fuel flow and ignition during start
b. Transmits engine power to the reduction gear box
c. Provides mounting pads for the engine pumps and controls
d. Converts heat energy from combustion to mechanical energy to drive the rest of the engine -
Answers c. Provides mounting pads for the engine pumps and controls
Which of the following is true of the speed sensitive control?
, a. Contains switches to control fuel flow and ignition during start
b. Transmits engine power to the reduction gear box
c. Provides mounting pads for the engine pumps and controls
d. Converts heat energy from combustion to mechanical energy to drive the rest of the engine -
Answers a. Contains switches to control fuel flow and ignition during start
Acceleration bleed valves are located at the 5th and 10th stages of compression on the
compressor assembly to accomplish which of the following?
a. Release air pressure prior to entering the combustion chamber to allow low speed ground idle
operation
b. Avoid compressor stalls during engine start and allow low speed ground idle operation
c. Bleed off high-pressure air for aircraft Pneumatic Systems
d. To prevent compressor stalls above 94 percent rpm and during acceleration - Answers b.
Avoid compressor stalls during engine start and allow low speed ground idle operation
Which of the following is true of the combustion assembly?
a. Contains six chambers for fuel burning
b. Provides proper fuel flow to the engine under varying conditions
c. Reduces engine speed to drive the propeller
d. Provides rigidity to the engine structure - Answers a. Contains six chambers for fuel burning
What C-130 engine sub-assembly drives the compressor, the accessories drive, and the
reduction gear assemblies?
a. Accessories drive housing
b. Turbine
c. Combustion
d. Compressor - Answers b. Turbine
Which of the following is true concerning the C-130 engine?
a. The engines are only interchangeable on the same wing since the direction of rotation is
opposite on the left and right wings
b. Reverse thrust is obtained by reversing the direction of rotation of the propeller
c. Throttle inputs adjust power by changing the fuel flow, and therefore, turbine inlet
temperature and torque, rather than engine speed
d. The aircraft becomes less fuel efficient at higher altitudes because of thrust loss caused by
loss of propeller efficiency - Answers c. Throttle inputs adjust power by changing the fuel flow,
and therefore, turbine inlet temperature and torque, rather than engine speed
Which of the following are engine-driven accessory drive subassemblies?
a. Oil pumps, Fuel pump, Fuel control, Speed sensitive valve, Speed sensitive control
b. Tach generator, Hydraulic pump, Oil pump, Starter, Generator
c. Speed sensing switch, Speed sensitive control, Oil pump, Free air gage, Fuel metering valve
d. Throttle lockout solenoid, Diffuser, Manifold drain valve, Hydraulic pump, Speed sensitive
control - Answers a. Oil pumps, Fuel pump, Fuel control, Speed sensitive valve, Speed sensitive
control
Which of the following is true of the accessory drive housing?
a. Contains switches to control fuel flow and ignition during start
b. Transmits engine power to the reduction gear box
c. Provides mounting pads for the engine pumps and controls
d. Converts heat energy from combustion to mechanical energy to drive the rest of the engine -
Answers c. Provides mounting pads for the engine pumps and controls
Which of the following is true of the speed sensitive control?
, a. Contains switches to control fuel flow and ignition during start
b. Transmits engine power to the reduction gear box
c. Provides mounting pads for the engine pumps and controls
d. Converts heat energy from combustion to mechanical energy to drive the rest of the engine -
Answers a. Contains switches to control fuel flow and ignition during start
Acceleration bleed valves are located at the 5th and 10th stages of compression on the
compressor assembly to accomplish which of the following?
a. Release air pressure prior to entering the combustion chamber to allow low speed ground idle
operation
b. Avoid compressor stalls during engine start and allow low speed ground idle operation
c. Bleed off high-pressure air for aircraft Pneumatic Systems
d. To prevent compressor stalls above 94 percent rpm and during acceleration - Answers b.
Avoid compressor stalls during engine start and allow low speed ground idle operation
Which of the following is true of the combustion assembly?
a. Contains six chambers for fuel burning
b. Provides proper fuel flow to the engine under varying conditions
c. Reduces engine speed to drive the propeller
d. Provides rigidity to the engine structure - Answers a. Contains six chambers for fuel burning
What C-130 engine sub-assembly drives the compressor, the accessories drive, and the
reduction gear assemblies?
a. Accessories drive housing
b. Turbine
c. Combustion
d. Compressor - Answers b. Turbine
