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FE Electrical and Computer Engineering

FE Electrical and Computer Engineering

Last update 

Fundamental Engineering for Electrical and Computer

Items (70)

  • What is the unit for a solid angle?

    steradian (sr)

  • In a Y-connected circuit, the magnitude of each line current is

    equal to the corresponding phase current

  • What is the unit for luminous flux?

    lumen (lm)

  • What three parties (persons or groups) are necessary in getting a project built?

    The three parties necessary to this process are the owner, engineer, and contractor.

  • What is Joule's law of energy?

    This law states that one energy form can be converted into another without loss.

  • In a -connected source driving a -connected load, the

    load voltage, line voltage, and source phase voltage are all equal for a given phase

  • What is the symbol for germanium?

    Ge

  • What term describes an element in a specific location that represents distributed properties?

    lumped-parameter element

  • What power of 10 is associated with the prefix "tera" (T)?

    10^12

  • What is the equation for the impedance of a capacitor?

    1/jωC = -j/ωC

  • In terms of conducting electricity, what is the classification of a dielectric material?

    insulator

  • What is the impedance angle of a capacitor?

    −90°

  • What are the properties of a short circuit?

    zero voltage, infinite (excessive) current, zero resistance

  • What term describes a node connecting three or more circuit elements?

    principal node

  • What law states that at any given instant, the sum of the instantaneous values of all the currents flowing toward a point is equal to the sum of the instantaneous values of all the currents flowing away from the point?

    Kirchhoff's current law (KCL)

  • What equation represents the maximum power-transfer condition?

    R(load) = R(source)

  • What is the symbol for aluminum?

    Al

  • In a three-phase system, when the loads are perfectly balanced, the neutral current is

    zero

  • What law states that the total electric flux that passes out of a closed surface equals, in rationalized terms, the total charge within the surface?

    Gauss's law

  • What term describes an element that is not a source of energy (such as a resistor, inductor, or capacitor)?

    passive element

  • What is the formula for the impedance of a capacitor in the s-domain?

    1/sC

  • What is the symbol for iron?

    Fe

  • What is the formula for capacitive reactance, XC?

    -1/ ωC

  • What kind of field is created by a static charge?

    An electric charge with this status results in a purely electric field.

  • What is the mathematical expression for Joule's law of heating effect?

    P = (I^2)R

  • What term describes the open-circuit voltage, V(open circuit), at the terminals of interest?

    Thevenin equivalent voltage

  • In a three-phase system, the voltages are separated by

    120°

  • What is the full name of the professional society whose acronym is ASME?

    The American Society of Mechanical Engineers

  • In a Y-Y source/load configuration, the

    phase current, the line current, and the load current are all equal in each phase

  • What power of 10 is associated with the prefix "giga" (G)?

    10^9

  • What theorem states that the response of a linear circuit element in a network with multiple independent sources is equal to the response obtained if each source is considered individually and the results are summed?

    superposition theorem

  • What equation represents the maximum energy-transfer condition?

    Z(load) = Z*(load)

  • What term describes a circuit that has the same voltage across all its elements?

    parallel circuit

  • In law, what is a tort?

    This is a civil wrong committed by one person that causes damage to another.

  • What is an ill-conditioned stiffness matrix?

    This kind of stiffness matrix has two or more equations that are so nearly linearly dependent that a precise numerical solution cannot be found.

  • A constant load power means a uniform conversion of

    electrical to mechanical energy

  • In a -connected source feeding a Y-connected load,

    each phase voltage equals the difference of the corresponding load voltages

  • What is the formula for the impedance of an inductor?

    jωL

  • What term describes the outflow of electrons into a vacuum from a heated conductor?

    photoelectric effect

  • What is the formula for inductive reactance, XL?

    ωL

  • What is the formula for the phase voltage of a wye winding?

    V(Phase)=V(Line)/√3

  • How must society be regarded by the ethical professional engineer?

    The professional engineer must give this group the highest ethical priority.

  • What is the unit for illuminance?

    lux (lx)

  • What are the properties of an open circuit?

    arbitrary voltage, zero current, infinite (large) resistance

  • In the context of professional ethics, what is a canon?

    This is a system of nonstatutory, nonmandatory codes of personal conduct. It includes fundamental beliefs and usually encompasses several rules for conduct and action in certain situations.

  • What is the value of s for a DC waveform?

    This is the type of waveform that results when s = 0

  • What is the flowcharting symbol for an input/output?

    This element of a flowchart is symbolized by

  • What is the mathematical expression for Ohm's law?

    V = IR

  • What is the formula for Thevenin or Norton equivalent resistance?

    V(open circuit)/I(short circuit)

  • What organization gives certification in reliability engineering?

    Certification in this is given by the American Society for Quality (ASQ).

  • What are the units of magnetic flux density?

    tesla (T) or webers per meter squared (Wb/m2)

  • What is the mathematical expression for the average value of a rectified voltage sinusoid?

    (2/π)Vm

  • What law states that whenever a conductor experiences an induced electromotive force (emf), the force will be in such a direction as to oppose the change that causes the induced emf?

    Lenz's law

  • What is the symbol for silicon?

    Si

  • In physics, how is power defined?

    This is the amount of work done per unit time.P= dW/dt

  • What is the unit for magnetic flux?

    weber (Wb)

  • What is the power triangle equation?

    S^2 = P^2 + Q^2

  • What is the formula for a decibel of power?

    10 log P/P0

  • What circuit element has a negative phase-angle difference?

    An inductor has this type of phase-angle difference.

  • What is the value of s for an exponential waveform?

    This is the type of waveform that results when s = σ.

  • What is the value of s for a damped sinusoid?

    This is the type of sinusoid that results when s = σ + jω.

  • What is the formula for a decibel of voltage?

    20 log V/V0

  • What is the equation for the complex frequency variable?

    s = σ + jω

  • What is the symbol for copper?

    Cu

  • What circuit element has a positive phase-angle difference?

    A capacitor has this type of phase-angle difference.

  • What is the full name of the code that has the acronym NESC?

    The National Electrical Safety Code

  • What is the formula for the impedance of an inductor in the s-domain?

    sL

  • What is the value of s for a sinusoidal steady-state waveform?

    This is the type of waveform that results when s = jω.

  • What term describes a circuit that has the same current throughout all its elements?

    series circuit

  • What is the polar form of Vm sin (ωt + θ)?

    Vm ∠ θ