B

I L L Y W O O D

E D U C A T I O N

Electrical engineering test

Section A

Section B

Instructions:


  • Choose the correct answer by clicking it
  • Answer all 20 questions
  • Then press the 'submit' button at the end to see your results

    • QUESTION 1

    1. What is an alternating current?
    A. Property of electrical conductors,usually a coil that resist changes in electric current.
    B. A measure of its opposition to the flow of electric current.
    C. An electrical current that never changes polarity or direction
    D. An electrical current that changes polarity or direction overtime.

    2. What is a direct current?
    A. A measure of its opposition to the flow of electric current.
    B. An electrical current that changes polarity or direction overtime.
    C. An electrical current that flows in one direction.
    D. Property of electrical conductors,usually a coil that resist changes in electric current.

    3.What is an example of a direct current?
    A. Battery
    B. Rock
    C. Tree
    D. Soil

    4. What is an example of an alternating current?
    A. Power grids
    B. Soil
    C. Rock
    D. Plastic

    5. What is a capacitor?
    A. A transistor controlled by the intensity of light incident on it.
    B. The increase in voltage occurring at the receiving end of a long transmission line.
    C. A measure of its opposition to the flow of electric current.
    D. A device that is used for storing energy in the inform of an electrical charge.

    6. What is a diode?
    A. The increase in voltage occurring at the receiving end of a long transmission line.
    B. The ability of an object to store electric charge.
    C. Two-terminal electronic component that conducts electric current in one direction.
    D. A measure of its opposition to the flow of electric current.

    7. What is an electrical resistance?
    A. Property of electrical conductors,usually a coil that resist changes in electric current.
    B. A measure of its opposition to the flow of electric current.
    C. A machine that converts mechanical power into alternating current electrical energy.
    D. The increase in voltage occurring at the receiving end of a long transmission line.

    8. What is a reverse polarity?
    A. When a receptacle is wired backwards.
    B. A measure of its opposition to the flow of electric current.
    C. The increase in voltage occurring at the receiving end of a long transmission line.
    D. A machine that converts mechanical power into alternating current electrical energy.

    9. What is a synchronous generator?
    A. A measure of its opposition to the flow of electric current.
    B. A machine that converts mechanical power into alternating current electrical energy.
    C. The increase in voltage occurring at the receiving end of a long transmission line.
    D. Property of electrical conductors,usually a coil that resist changes in electric current.

    10. What is an industance?
    A. A measure of its opposition to the flow of electric current.
    B. The increase in voltage occurring at the receiving end of a long transmission line.
    C. The ability of an object to store electric charge.
    D. Property of electrical conductors,usually a coil that resist changes in electric current.

    11. What is a capacitance?
    A. Property of electrical conductors,usually a coil that resist changes in electric current.
    B. A measure of its opposition to the flow of electric current.
    C. The ability of an object to store electric charge.
    D. The increase in voltage occurring at the receiving end of a long transmission line.

    12. What is a frantic effect?
    A. A device that converts alternating current to direct current.
    B. A measure of its opposition to the flow of electric current.
    C. The increase in voltage occurring at the receiving end of a long transmission line.
    D. The ability of an object to store electric charge.

    13. What is an ACSR stand for?
    A. Aluminium Conductor Soil Reinforced
    B. Aluminium Conductor Sand Reinforced
    C. Aluminium Conductor Stone Reinforced
    D. Aluminium Conductor Steel Reinforced

    14. What is a rectifier?
    A. A device that converts alternating current to direct current.
    B. A measure of its opposition to the flow of electric current.
    C. The ability of an object to store electric charge.
    D. Property of electrical conductors,usually a coil that resist changes in electric current.

    15. What is a phototransistor?
    A. Property of electrical conductors,usually a coil that resist changes in electric current.
    B. A semiconductor device that converts light into an electrical current.
    C. The ability of an object to store electric charge.
    D. A measure of its opposition to the flow of electric current.

    16. What is a photodiode?
    A. The ability of an object to store electric charge.
    B. A measure of its opposition to the flow of electric current.
    C. A semiconductor device that converts light into an electrical current.
    D. Property of electrical conductors,usually a coil that resist changes in electric current.

    17. What does PCB stand for?
    A. Private Circuit Board
    B. Printed Circuit Board
    C. Power Circuit Board
    D. Paper Circuit Board

    18. What does MOSFET stand for?
    A. Major-Oxide Semiconductor Field-Effect Transistor
    B. Machine-Oxide Semiconductor Field-Effect Transistor
    C. Medium-Oxide Semiconductor Field-Effect Transistor
    D. Metal-Oxide Semiconductor Field-Effect Transistor

    19. What is a light-emitting diode?
    A. A semiconductor device that emits light when an electric current flow through it.
    B. The ability of an object to store electric charge.
    C. A measure of its opposition to the flow of electric current.
    D. Property of electrical conductors,usually a coil that resist changes in electric current.

    20. What is a heat sink?
    A. Property of electrical conductors,usually a coil that resist changes in electric current.
    B. A measure of its opposition to the flow of electric current.
    C. The ability of an object to store electric charge.
    D. An object that disperses heat from a heat source.

    Instructions:


  • Choose the correct answer by clicking it(question1)
  • Write the correct answer(question2)
  • Answer all 30 questions
  • Then press the 'submit' button at the end to see your results

    • QUESTION 1

    State whether the following statements are true or false.

    1. Electrons have a negative charge.
    True
    False

    2. Electrons are shared in covalent bonds.
    True
    False

    3. An s subshell can hold a maximum of 2 electrons.
    True
    False

    4. Electrons spin in the same direction within an orbital.
    True
    False

    5. The first energy level can hold 6 electrons.
    True
    False

    6. Energy travels through space in form of electromagnetic energy.
    True
    False

    7. Electrons make up the majority of an atom's mass.
    True
    False

    8. Protons have a positive charge.
    True
    False

    9. Protons are located in the nucleus of an atom.
    True
    False

    10. Protons have a negative charge.
    True
    False

    11. Electromotive force is measured in volts.
    True
    False

    12. Microwaves have lower frequency than radio waves.
    True
    False

    13. Microwaves make food radioactive.
    True
    False

    14. Microwaves have lower frequency than radio waves.
    True
    False

    15. The live wire in a plug is blue in color.
    True
    False

    QUESTION 2

    Choose the correct word from the box below and write it in the space provided.

    generator

    electron

    circuit

    conductor

    transformer

    relay

    wattmeter

    ohmmeter

    resitor

    farad

    capacitor

    current

    ammeter

    volt

    power

    1. A component that stores electrical energy in an electric field is called a

    2. A device that change voltage from one coil to another is called a

    3. A closed path or conducting path around which electrons can flow is called a

    4. An instrument for measuring the flow of electrical current in ampheres is called a

    5. Any material where electric current can flow freely is called a

    6. The flow of an electric charge through a conductor is called a

    7. A tiny particle that rotates around the nucleus of an atom is called a

    8. A unit of measure for capacitance is called a

    9. A device that converts a mechanical energy into electrical energy is called a

    10. An instrument for measuring the resistance in ohms of an electrical circuit is called a

    11. The rate at which electical energy is tranferred by an electric cicrcuit is called a

    12. An electrical coil switch that uses a small current to control a much larger current is called a

    13. A device usually made of wires which presents a resistance to current flow is called a

    14. A unit of measure of voltage is called a

    15. An instrument for measuring the electrical power is called a

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