Subelement T5 Group A

FCC Technician Class Exam Study Guide - 2014-2018 · Wikibooks

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    From Wikibooks, under CC BY-SA 4.0, as the source states it. This page at Wikibooks.

    Electrical principles, units, and terms: current and voltage; conductors and insulators; alternating and direct current

    The Question Pool

    Question 1

    Electrical current is measured in which of the following units?
    A. Volts
    B. Watts
    C. Ohms
    D. Amperes


    The correct answer is D.

    Question 2

    Electrical power is measured in which of the following units?
    A. Volts
    B. Watts
    C. Ohms
    D. Amperes


    The correct answer is B.

    Question 3

    What is the name for the flow of electrons in an electric circuit?
    A. Voltage
    B. Resistance
    C. Capacitance
    D. Current


    The correct answer is D.

    Question 4

    What is the name for a current that flows only in one direction?
    A. Alternating current
    B. Direct current
    C. Normal current
    D. Smooth current


    The correct answer is B.

    Question 5

    What is the electrical term for the electromotive force (EMF) that causes electron flow?
    A. Voltage
    B. Ampere-hours
    C. Capacitance
    D. Inductance


    The correct answer is A.

    Question 6

    How much voltage does a mobile transceiver usually require?
    A. About 12 volts
    B. About 30 volts
    C. About 120 volts
    D. About 240 volts


    The correct answer is A.

    Question 7

    Which of the following is a good electrical conductor?
    A. Glass
    B. Wood
    C. Copper
    D. Rubber


    The correct answer is C.

    Question 8

    Which of the following is a good electrical insulator?
    A. Copper
    B. Glass
    C. Aluminum
    D. Mercury


    The correct answer is B.

    Question 9

    What is the name for a current that reverses direction on a regular basis?
    A. Alternating current
    B. Direct current
    C. Circular current
    D. Vertical current


    The correct answer is A.

    Question 10

    Which term describes the rate at which electrical energy is used?
    A. Resistance
    B. Current
    C. Power
    D. Voltage


    The correct answer is C.

    Question 11

    What is the basic unit of electromotive force?
    A. The volt
    B. The watt
    C. The ampere
    D. The ohm


    The correct answer is A.

    Question 12

    What term describes the number of times per second that an alternating current reverses direction?
    A. Pulse rate
    B. Speed
    C. Wavelength
    D. Frequency


    The correct answer is D.