Electrical Engineering Basics Quiz: Trivia!

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| By Rohan Wankhade
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Rohan Wankhade
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  • 1/10 Questions

    The S.I. unit of power is?

    • Henry
    • Coulomb
    • Watt
    • Watt-hour
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About This Quiz

Explore the fundamentals of electrical engineering with this trivia quiz! Assess your understanding of current flow in different materials, the role of voltage, and devices used to detect electric current. Ideal for learners keen on enhancing their knowledge in electrical principles.

Electrical Engineering Basics Quiz: Trivia! - Quiz

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  • 2. 

    The flow of current in solids is due to?

    • Electrons

    • Electrons and ions

    • Atoms

    • Nucleus

    Correct Answer
    A. Electrons
    Explanation
    The flow of current in solids is due to electrons. In solids, electrons are the charge carriers that move through the material when a voltage is applied. Electrons have a negative charge and are relatively free to move within the solid structure. They can be easily influenced by an electric field, allowing them to flow and carry the current. Ions, atoms, and the nucleus do not have the same mobility as electrons and therefore do not contribute significantly to the flow of current in solids.

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  • 3. 

    Electric pressure is also called

    • Resistance

    • Power

    • Voltage

    • Energy

    Correct Answer
    A. Voltage
    Explanation
    Voltage is the correct answer because electric pressure is commonly referred to as voltage. Voltage is the potential difference between two points in an electric circuit, which determines the rate at which electric energy is transferred. It is measured in volts and represents the force that pushes electric charges through a conductor.

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  • 4. 

    Which of the following ampere-second could be the unit?

    • Reluctance

    • Charge

    • Power

    • Energy

    Correct Answer
    A. Charge
    Explanation
    The unit "ampere-second" is commonly used to measure electric charge. It is a combination of the unit of current (ampere) and the unit of time (second). Charge is a fundamental property of matter and is measured in units of coulombs (C). The product of current and time, which is measured in ampere-seconds, represents the amount of charge that has passed through a point in a circuit. Therefore, ampere-second is a valid unit for measuring charge.

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  • 5. 

    The minimum requirements for causing the flow of current are?

    • A voltage source, a resistor and a switch

    • A voltages source and a conductor

    • A power source and a bulb

    • A voltage source, a conductor an ammeter and a switch

    Correct Answer
    A. A voltages source and a conductor
    Explanation
    The minimum requirements for causing the flow of current are a voltage source and a conductor. A voltage source provides the potential difference that drives the flow of electrons, while a conductor allows the electrons to move freely through it. Without a voltage source, there would be no potential difference to drive the flow of electrons, and without a conductor, the electrons would not have a pathway to flow through. Therefore, both a voltage source and a conductor are necessary for current to flow.

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  • 6. 

    One newton meter is the same as?

    • One watt

    • 1 joule

    • 5 joules

    • 1 joule/sec

    Correct Answer
    A. 1 joule
    Explanation
    One newton meter is the same as 1 joule. This is because both newton meters and joules are units of energy. A newton meter is the amount of energy required to move an object with a force of one newton over a distance of one meter. Similarly, a joule is also a unit of energy and is defined as the amount of work done when a force of one newton is applied over a distance of one meter. Therefore, one newton meter is equal to one joule.

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  • 7. 

    The rating of the fuse wire is always expressed in?

    • Ampere-hours

    • Ampere-volts

    • KWH

    • Ampere

    Correct Answer
    A. Ampere
    Explanation
    The rating of the fuse wire is always expressed in amperes because it indicates the maximum current that the fuse can safely handle before it blows and interrupts the circuit. Ampere is the unit of measurement for electric current, making it the appropriate unit for expressing the rating of a fuse wire. Ampere-hours, ampere-volts, and KWH are not suitable units for expressing the rating of a fuse wire as they represent different measurements related to energy and power.

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  • 8. 

    An instrument that detects electric current is known as?

    • Voltmeter

    • Rheostat

    • Wattmetre

    • Galvanometer

    Correct Answer
    A. Galvanometer
    Explanation
    A galvanometer is an instrument that detects electric current. It is designed to measure and detect small electric currents. It works based on the principle of electromagnetic induction. When an electric current flows through a coil in the galvanometer, it produces a magnetic field. This magnetic field interacts with a permanent magnet or another coil, causing a deflection in a pointer or a needle. This deflection indicates the presence and strength of the electric current. Therefore, a galvanometer is the correct answer as it is specifically designed for detecting electric currents.

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  • 9. 

    In gases, the flow of current is due to?

    • Electrons Only

    • Positive Ions Only

    • Electrons and Positive Ions

    • Electrons, positive ions and negative ions

    Correct Answer
    A. Electrons, positive ions and negative ions
    Explanation
    In gases, the flow of current is due to the presence of electrons, positive ions, and negative ions. Electrons are negatively charged particles that can move freely in a gas and carry electric current. Positive ions are atoms or molecules that have lost one or more electrons and carry a positive charge. Negative ions are atoms or molecules that have gained one or more electrons and carry a negative charge. The movement of these charged particles in a gas allows for the flow of electric current.

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  • 10. 

    The temperature coefficient of resistance is expressed in terms of?

    • Ohms/oC

    • Mhos/ohmoC

    • Ohms/ohmoC

    • Mhos/oC

    Correct Answer
    A. Ohms/ohmoC
    Explanation
    The temperature coefficient of resistance is a measure of how much the resistance of a material changes with temperature. It is expressed in units of ohms per degree Celsius (Ω/°C). This indicates the change in resistance for every degree Celsius change in temperature. The correct answer, "Ohms/ohmoC," is a typographical error and should be "Ohms/°C."

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 15, 2020
    Quiz Created by
    Rohan Wankhade
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