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(AD) Aviation Machinist Mate Week 2 UPDATED Exam Questions and CORRECT Answers
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(AD) Aviation Machinist Mate Week 2 UPDATED Exam Questions and CORRECT Answers Electricity - Correct Answer- The physical phenomena arising from the existence and interaction of an electrical charge Voltage / Electromotive Force (EMF) - Correct Answer- The amount of force being applied to ...

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  • August 18, 2024
  • 19
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • Aviation Machinist Mate
  • Aviation Machinist Mate

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(AD) Aviation Machinist Mate Week 2
UPDATED Exam Questions and
CORRECT Answers

Electricity - Correct Answer- The physical phenomena arising from the existence and
interaction of an electrical charge


Voltage / Electromotive Force (EMF) - Correct Answer- The amount of force being applied to
a circuit to produce an electron flow


Amperage / Current Flow - Correct Answer- The quantity of electricity flowing through the
circuit


Resistance - Correct Answer- The opposition to the flow of electrons offered by a device or
material


Ohms - Correct Answer- The measurement of resistance to current flow


Watt - Correct Answer- The measurement of electrical work done


Forms of Electricity - Correct Answer- Static and Dynamic


Static Electricity - Correct Answer- (1) Electricity at rest


(2) Begins with a build up of either a positive or negative electron charge. If two negative
charges or two positive charges are brought close together, the objects that hold that charge
repel each other. If a positive charge is brought within close proximity of a negative charge,
the two objects attract each other


(3) Static electricity is produced by friction and is not easily measured nor is it controllable or
usable

,Dynamic Electricity - Correct Answer- A practical form of current flow that is used in
everyday life. This form of electricity is easily produced, measured, and controlled


Methods of Producing Dynamic Electricity - Correct Answer- Mechanical, Chemical,
Thermal, and Pressure


Mechanical - Correct Answer- Produced by rotating a magnetic field through another
magnetic field


Ex: A Grass Cutter


Chemical - Correct Answer- Produced by surrounding two or metallic plates with a chemical
electrolyte


Ex: A Battery


Thermal - Correct Answer- Produced by joining two dissimilar metals and applying heat


Ex: Thermocouple


Pressure - Correct Answer- Produced by applying pressure to quartz, which will produce an
electron flow


Ex: A Watch


Types of Electricity - Correct Answer- AC and DC


Direct Current (DC) - Correct Answer- Current that is a steady flow in one direction only. It
is produced mechanically by a DC generator, or chemically by a battery


Ex: A Flashlight

, Alternating Current (AC) - Correct Answer- Current flow that reverses direction at specific
intervals, defined as Hertz / Cycles. It is produced mechanically by an AC generator


Ex: A TV Screen


Electrical Test Equipment - Correct Answer- Multimeter


Multimeter Test Leads - Correct Answer- Red lead = Positive and Black lead = Negative


Multimeter Digital Display Features - Correct Answer- Power Up, Overload Indication (OL),
and Low Battery Indicator


Power Up - Correct Answer- All segments appear while the instrument performs a self-test.
At the end of the test, meter will chirp once indicating that it is ready for use


Overload Indication (OL) - Correct Answer- Indicates input is too large to display


Low Battery Indicator - Correct Answer- Appears when approximately 100 hours of life
remain. If left on, the meter will go to standby mode after one hour to save the battery


Systems / Components of the Engine Electrical System - Correct Answer- Engine Speed
Indicating System, Engine Temperature Indicating System, Fuel Flow Indicating System, Oil
Pressure Indicating System and Engine Fire Detection System


Engine Speed Indicating System's Components - Correct Answer- Tachometer (RPM)
Indicator and Tachometer Generator


Tachometer (RPM) Indicator - Correct Answer- Indicates engine compressor rotor RPM in
percent. It is located in the flight station / cockpit


Tachometer generator - Correct Answer- (1) Mounted and splined to the accessory gearbox


(2) Creates an electrical reference signal that represents the rotational speed of the engine
compressor

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