(AD) Aviation Machinist Mate Week 2 Exam 2024 with complete solution

(AD) Aviation Machinist Mate Week 2 Exam 2024 with complete solution Electricity - answerThe physical phenomena arising from the existence and interaction of an electrical charge Voltage / Electromotive Force (EMF) - answerThe amount of force being applied to a circuit to produce an electron flow Amperage / Current Flow - answerThe quantity of electricity flowing through the circuit Resistance - answerThe opposition to the flow of electrons offered by a device or material Ohms - answerThe measurement of resistance to current flow Watt - answerThe measurement of electrical work done Forms of Electricity - answerStatic and Dynamic Static Electricity - 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 - answerA 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 - answerMechanical, Chemical, Thermal, and Pressure Mechanical - answerProduced by rotating a magnetic field through another magnetic field Ex: A Grass Cutter Chemical - answerProduced by surrounding two or metallic plates with a chemical electrolyte Ex: A Battery Thermal - answerProduced by joining two dissimilar metals and applying heat Ex: Thermocouple Pressure - answerProduced by applying pressure to quartz, which will produce an electron flow Ex: A Watch Types of Electricity - answerAC and DC Direct Current (DC) - answerCurrent 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) - answerCurrent 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 - answerMultimeter Multimeter Test Leads - answerRed lead = Positive and Black lead = Negative Multimeter Digital Display Features - answerPower Up, Overload Indication (OL), and Low Battery Indicator Power Up - answerAll 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) - answerIndicates input is too large to display Low Battery Indicator - answerAppears when approximately 100 hours of life remain. If left on, the meter will go to standby mode a