FE Electrical and Computer Actual Exam Questions And Detailed Verified Answers.

What is Joule's law of energy? - correct answer This law states that one energy form can be converted into another without loss. In physics, how is power defined? - correct answer This is the amount of work done per unit time. P= dW/dt What are the units of magnetic flux density? - correct answer tesla (T) or webers per meter squared (Wb/m2) What is the unit for a solid angle? - correct answer steradian (sr) What is the unit for magnetic flux? - correct answer weber (Wb) What is the unit for luminous flux? - correct answer lumen (lm) What is the unit for illuminance? - correct answer lux (lx) What is the mathematical expression for Ohm's law? - correct answer V = IR What term describes an element in a specific location that represents distributed properties? - correct answer lumped-parameter element What term describes an element that is not a source of energy (such as a resistor, inductor, or capacitor)? - correct answer passive element What term describes a circuit that has the same current throughout all its elements? - correct answer series circuit What term describes a circuit that has the same voltage across all its elements? - correct answer parallel circuit What are the properties of a short circuit? - correct answer zero voltage infinite (excessive) current zero resistance What are the properties of an open circuit? - correct answer arbitrary voltage zero current infinite (large) resistance What is the mathematical expression for Joule's law of heating effect? - correct answer P = (I^2)R What is the mathematical expression for Ohm's law? - correct answer V = IR What term describes the open-circuit voltage, V(open circuit), at the terminals of interest? - correct answer Thevenin equivalent voltage What is the formula for Thevenin or Norton equivalent resistance? - correct answer V(open circuit)/I(short circuit) What term describes a node connecting three or more circuit elements? - correct answer principal node What term describes the outflow of electrons into a vacuum from a heated conductor? - correct answer photoelectric effect 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 - correct answer Kirchhoff's current law (KCL) What is the polar form of Vm sin (ωt + θ)? - correct answer Vm ∠ θ What is the equation for the complex frequency variable? - correct answer s = σ + jω What is the formula for capacitive reactance, XC? - correct answer -1/ ωC What is the formula for inductive reactance, XL? - correct answer ωL In a three-phase system, the voltages are separated by - correct answer 120° In a three-phase system, when the loads are perfectly balanced, the neutral current is - correct answer zero In a -connected source driving a -connected load, the - correct answer load voltage, line voltage, and source phase voltage are all equal for a given phase In a -connected source feeding a Y-connected load, - correct answer each phase voltage equals the difference of the corresponding load voltages In a Y-Y source/load configuration, the - correct answer phase current, the line current, and the load current are all equal in each phase In a Y-connected circuit, the magnitude of each line current is - correct answer equal to the corresponding phase current A constant load power means a uniform conversion of - correct answer electrical to mechanical energy What is the equation for the impedance of a capacitor? - correct answer 1/jωC = -j/ωC What is the formula for the impedance of an inductor? - correct answer jωL What is the impedance angle of an inductor? - correct answer +90° What is the impedance angle of a capacitor? - correct answer −90° What is the power triangle equation? - correct answer S^2 = P^2 + Q^2 What is the mathematical expression for the average value of a rectified voltage sinusoid? - correct answer (2/π)Vm What circuit element has a positive phase-angle difference? - correct answer A capacitor has this type of phase-angle difference. What circuit element has a negative phase-angle difference? - correct answer An inductor has this type of phase-angle difference. What is the value of s for a sinusoidal steady-state waveform? - correct answer This is the type of waveform that results when s = jω. What is the value of s for an exponential waveform? - correct answer This is the type of waveform that results when s = σ. What is the value of s for a damped sinusoid? - correct answer This is the type of sinusoid that results when s = σ + jω. What is the value of s for a DC waveform? - correct answer This is the type of waveform that results when s = 0 What is the formula for the impedance of a capacitor in the s-domain? - correct answer 1/sC What is the formula for the impedance of an inductor in the s-domain? - correct answer sL What is the full name of the professional society whose acronym is ASME? - correct answer The American Society of Mechanical Engineers What is the full name of the code that has the acronym NESC? - correct answer The National Electrical Safety Code What organization gives certification in reliability engineering? - correct answer Certification in this is given by the American Society for Quality (ASQ). In law, what is a tort? - correct answer This is a civil wrong committed by one person that causes damage to another. What three parties (persons or groups) are necessary in getting a project built? - correct answer The three parties necessary to this process are the owner, engineer, and contractor. How must society be regarded by the ethical professional engineer? - correct answer The professional engineer must give this group the highest ethical priority. In the context of professional ethics, what is a canon? - correct answer This is a system of nonstatutory, nonmandatory codes of personal conduct. What power of 10 is associated with the prefix "tera" (T)? - correct answer 10^12 What power of 10 is associated with the prefix "giga" (G)? - correct answer 10^9 What is the symbol for aluminum? - correct answer Al What is the symbol for copper? - correct answer Cu