Neiep 600 Final Exam 2023 Graded A+

In capacitors, what is the purpose of the dielectric? - ANSWER-Prevent arcing within the capacitor Which of the following is true about capacitors in AC circuits? - ANSWER-Current leads voltage all the time What describes a capacitor s ability to store an electrical charge? - ANSWER-Capacitance which of the following statements is correct about polarized electrolytic capacitors? - ANSWER-Voltage polarity must be correct What is the time constant for a circuit with 150k ohms and 2 microfarad capacitor? - ANSWER-.3 seconds If frequency is increased in a capacitave circuit what will happen? - ANSWER-Capacitive reactance will decrease What happens in a circuit, when the capacitor voltage equals the source voltage? - ANSWER-Current flow stops in the circuit In a DC circuit, which is correct about capacitors the instant when power is applied? - ANSWER-Current is maximum In the circuit shown in figure 1, what will be the total capacitance? - ANSWER-250 u(micro) farads If a circuit has a capacitor of 5 microfrauds and a source voltage of 120 volts DC through a resistance of 200k, how long will it take to fully charge? - ANSWER-5 seconds What happens in a circuit, when the capacitor voltage equals the source voltage? - ANSWER-Current flow stops in the circuit which statement best describes one time constant of a capacitor? - ANSWER-The time it takes to charge to 63.2% of applied voltage In a DC circuit, which is correct about capacitors the instant when power is applied? - ANSWER-Current is maximum If a circuit has a capacitor of 5 microfrauds and a source voltage of 120 volts DC through a resistance of 200k, how long will it take to fully charge? - ANSWER-5 seconds If two capacitors in parrallel have equal reactance of 40 ohms what is the total reactance? - ANSWER-20ohms Which of the following would increase the DC working voltage DCWV of a capacitor - ANSWER-Increase the plate area and the dielectric thickness Which statement is correct concerning capacitors? - ANSWER-Increased plate area, increases capacitance Which of the following is the unit used for measuring capacitance? - ANSWER-Farad Current flow from positive to negative is described as - ANSWER-conventional flow Current flow from negative to positive is called - ANSWER-electron flow By increases the distance between the plates we ________ the charge capacity - ANSWER-decrease