MACHINIST MATE FINAL TEST 2026
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
◍ Relative Pressure.
Answer: One pressure in relation to another
◍ Compressor rotor assembly.
Answer: Compressor blades that accelerate the air rearward. Attached by fir
tree roots, dovetail or bulb. Locked in by peening, pins, lock wire or keys.
Assembly also include the compressor disk and compressor shaft.
◍ Voltage/Electromotive Force (EMF).
Answer: The amount of force being applied to a circuit to produce an
electron flow.
◍ Amperage.
Answer: The quantity of electricity flowing through the circuit (Current
Flow).
◍ Engine Electrical System.
Answer: Provides electrical power to the engine performance indicators.
◍ Compressor Casing.
Answer: Outer housing for the compressor. Stator Assembly mounted to
this.
◍ Methods of producing Dynamic Electricity.
Answer: Mechanical, Chemical, Thermal, and Pressure
◍ Motion.
Answer: The act or process of changing place or position
◍ Gas.
, Answer: A state of matter with no definite shape or volume
◍ What must always be done to guard against the danger of static electricity
during servicing and maintenance?.
Answer: Ensure that the Aircraft is grounded!
◍ Tachometer generator.
Answer: [a] mounted and splined to the accessory gearbox.[b]Creates an
electrical reference signal that represents the rotational speed of the engine
compressor.[c] The reference signal is transmitted to the tachometer (RPM)
indicator and is read as percent of compressor RPM.
◍ Pressure.
Answer: Force per unit area measured in PSI
◍ Engine Speed Indicating System.
Answer: Provides a visual indication of compressor rotor revolutions per
minute (RPM).
◍ Stator Assembly.
Answer: Consist of rows of stationary vanes dove tailed into split rings and
mounted to the compressor casing. Receive air form the preceding stage of
rotor blades and then compresses it.
◍ Effiency of a machine.
Answer: Measured by the ratio of work output divided by work input.
◍ What are the purposes of the APU?.
Answer: To supply pneumatic power for main engine starting, and aircraft
air-conditioning. As well as electrical, mechanical, and hydraulic sources of
power.
◍ mechanical.
Answer: produced by rotating a magnetic field through another magnetic
field
◍ pressure.
Answer: produced by applying pressure to quartz which will produce an
, electron flow
◍ System Pump.
Answer: Pressure Element Pump, Scavenge Element Pump
◍ Input Leads.
Answer: Delivers input power from the aircraft electrical system, or from an
external power source, to the transformer.
◍ If the equipment is a transmitter it is mounted....
Answer: On the Engine.
◍ Front Frame Section.
Answer: Location: Mounted on the front of the compressor Description:
Welded steel ring that houses the inlet guide vans (IGVS)Purpose: Recieve
air from the air inlet duct and pre-swirl the air (IGVS do this) in the
direction of rotation of the engine compressor rotor to prevent shock.
◍ Ohm.
Answer: measurement of resistance to current flow
◍ Components of the Hydromechanical System.
Answer: Resivoir FilterPumpPressure Relief ValveSelector ValveActuating
Unit TubingCheck Valve
◍ Variables Affecting Thrust.
Answer: Revolutions Per Minute (RPM)Humidity Outside Air Temperature
(OAT)Barometric Pressure
◍ SAFETY- Hydromechanical Systems.
Answer: 1. Hydromechanical systems operate at extremely high pressure
(3,000 psi)2. A pin-hole leak at these pressures can force the fluid through
your skin3. Never attempt to repair system leaks with the system under
pressure.
◍ What are the Power Section Assembly Components?.
Answer: The Compressor, Combustion and Turbine Section.
◍ Red test lead.
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
◍ Relative Pressure.
Answer: One pressure in relation to another
◍ Compressor rotor assembly.
Answer: Compressor blades that accelerate the air rearward. Attached by fir
tree roots, dovetail or bulb. Locked in by peening, pins, lock wire or keys.
Assembly also include the compressor disk and compressor shaft.
◍ Voltage/Electromotive Force (EMF).
Answer: The amount of force being applied to a circuit to produce an
electron flow.
◍ Amperage.
Answer: The quantity of electricity flowing through the circuit (Current
Flow).
◍ Engine Electrical System.
Answer: Provides electrical power to the engine performance indicators.
◍ Compressor Casing.
Answer: Outer housing for the compressor. Stator Assembly mounted to
this.
◍ Methods of producing Dynamic Electricity.
Answer: Mechanical, Chemical, Thermal, and Pressure
◍ Motion.
Answer: The act or process of changing place or position
◍ Gas.
, Answer: A state of matter with no definite shape or volume
◍ What must always be done to guard against the danger of static electricity
during servicing and maintenance?.
Answer: Ensure that the Aircraft is grounded!
◍ Tachometer generator.
Answer: [a] mounted and splined to the accessory gearbox.[b]Creates an
electrical reference signal that represents the rotational speed of the engine
compressor.[c] The reference signal is transmitted to the tachometer (RPM)
indicator and is read as percent of compressor RPM.
◍ Pressure.
Answer: Force per unit area measured in PSI
◍ Engine Speed Indicating System.
Answer: Provides a visual indication of compressor rotor revolutions per
minute (RPM).
◍ Stator Assembly.
Answer: Consist of rows of stationary vanes dove tailed into split rings and
mounted to the compressor casing. Receive air form the preceding stage of
rotor blades and then compresses it.
◍ Effiency of a machine.
Answer: Measured by the ratio of work output divided by work input.
◍ What are the purposes of the APU?.
Answer: To supply pneumatic power for main engine starting, and aircraft
air-conditioning. As well as electrical, mechanical, and hydraulic sources of
power.
◍ mechanical.
Answer: produced by rotating a magnetic field through another magnetic
field
◍ pressure.
Answer: produced by applying pressure to quartz which will produce an
, electron flow
◍ System Pump.
Answer: Pressure Element Pump, Scavenge Element Pump
◍ Input Leads.
Answer: Delivers input power from the aircraft electrical system, or from an
external power source, to the transformer.
◍ If the equipment is a transmitter it is mounted....
Answer: On the Engine.
◍ Front Frame Section.
Answer: Location: Mounted on the front of the compressor Description:
Welded steel ring that houses the inlet guide vans (IGVS)Purpose: Recieve
air from the air inlet duct and pre-swirl the air (IGVS do this) in the
direction of rotation of the engine compressor rotor to prevent shock.
◍ Ohm.
Answer: measurement of resistance to current flow
◍ Components of the Hydromechanical System.
Answer: Resivoir FilterPumpPressure Relief ValveSelector ValveActuating
Unit TubingCheck Valve
◍ Variables Affecting Thrust.
Answer: Revolutions Per Minute (RPM)Humidity Outside Air Temperature
(OAT)Barometric Pressure
◍ SAFETY- Hydromechanical Systems.
Answer: 1. Hydromechanical systems operate at extremely high pressure
(3,000 psi)2. A pin-hole leak at these pressures can force the fluid through
your skin3. Never attempt to repair system leaks with the system under
pressure.
◍ What are the Power Section Assembly Components?.
Answer: The Compressor, Combustion and Turbine Section.
◍ Red test lead.
