Spring Midterm IEC Exam Questions With 100% Correct Answers.

Spring Midterm IEC Exam Questions With 100% Correct Answers. In a 60 Hertz system, the voltage will go to "0" ___ times per second? - answer120 What type of magnet is used for the coil in a relay? - answerelectromagnet ___ flow equals current flow. - answerelectron ___ law states "charged bodies attract or repel each other with a force that is directly proportional to the product of the charges and inversely proportional to the square of the distance between them." - answerCoulomb's If the RMS value is 125 volts, what is the peak value? - answer176.75 Which of the symbols, shown below, is used to represent an inductor in a schematic circuit? - answerone that looks like a curly fry Electrical current is the flow of ___. - answerelectrons Which of the formulas, shown below, is correct to find the total of three capacitors in a series circuit? - answerCT=1/(1/C1 + 1/C2 + 1/C3) Which of the formulas, shown below, is correct to find the equivalent of three inductors in a parallel circuit? - answerLT=1/(1/L1 + 1/L2 + 1/L3) Compliance with Lockout/Tagout prevents an estimated ___ fatalities each year. - answer120 A lockout can be removed by ___. - answeronly the person who applied it Use only Lockout/Tagout devices authorized for the particular equipment. These devices are to be ___. - answerI, II & III OSHA's Lockout/Tagout standards outline required measures for controlling hazardous ___ energies. - answerall of these Insure that Lockout/Tagout devices identify the ___. - answerindividual ___ is the property of an electrical circuit that opposes any change in current. - answerInductance In an AC circuit containing resistance plus inductance, or resistance plus capacitance, or resistance plus inductance and capacitance, the opposition to current flow is called ___. - answerimpendance The presence of inductive reactance in a circuit affects current flow. What is the designated symbol for inductive reactance? - answerXL In an inductive circuit, the current ___ the applied voltage. - answerlags Impedance is represented by the letter ___. - answerz In a purely capacitive circuit, current is said to ___ the applied source voltage. - answerlead The presence of capacitive reactance in a circuit affects current flow. What is the designated symbol for capacitive reactance? - answerXc Before working on a transformer you must follow the Safe Work Practices in ___. - answerNFPA 70E Electrical metallic tubing shall be constructed of any of the following except: - answerred brass When installing more than two conductors in a 50 foot run of 3 inch intermediate metal conduit, the maximum area that can be filled with conductors is ___ square inches. - answer3.169 When installing more than two conductors in a 50 foot run of 3 inch intermediate metal conduit, the maximum area that can be filled with conductors is ___ square inches. - answerde- energized True power is measured in ___. - answerwatts Reactive power is measured in ___. - answervolt-amps reactive Apparent power is measured in ___. - answervolt-amps ___ power is power consumed by a resistor, dissipated as heat, and not returned to the generation source. - answerTrue A resistor is an example of true power. - answerTrue ___ power is power that passes through reactive components, which do not consume energy, and returns to the source. - answerReactive ___ are used to correct power factor. - answerCapacitors Apparent Power is the power that must be supplied to a circuit that includes ___ loads. - answerall of these