FAA A&P Mechanics General Oral 157 Practical Questions With Answers

What is the most important law applicable to the study of electricity? - ️️Ohm's Law (I = E ÷R) What are the elements of Ohm's Law? - ️️Voltage (E), current (I), and resistance (R) What are the sources of electrical power? - ️️Mechanical (generator), chemical (battery), photoelectric (light), and thermal (heat) What does an electrical circuit consist of? - ️️A source of electrical pressure or EMF, resistance in the form of an energy consuming electrical device or load, and conductors, usually in the form of copper or aluminum wires, to provide a path for electron flow. What represents capacitance in an AC circuit? - ️️A capacitor (condenser) What is the function of a capacitor? - ️️To store electricity What is inductance? - ️️A voltage that is induced in a coil in an AC circuit. This voltage is opposite in direction to the applied voltage, and opposes any change in the alternating current. What is impedance? - ️️It is the combined effect of resistance, inductive reactance, and capacitive reactance in an AC circuit What is the unit of measurement of power in a DC circuit? - ️️The watt. Amperes times volts equals watts (P = I × E). 746 watts equals 1 horsepower.