Neiep 600 final exam with well elaborated answers
In capacitors, what is the purpose of the dielectric? - correct answer-Prevent arcing within
the capacitor
Which of the following is true about capacitors in AC circuits? - correct answer-Current
leads voltage all the time
What describes a capacitor s ability to store an electrical charge? - correct answer-
Capacitance
which of the following statements is correct about polarized electrolytic capacitors? -
correct answer-Voltage polarity must be correct
What is the time constant for a circuit with 150k ohms and 2 microfarad capacitor? -
correct answer-.3 seconds
If frequency is increased in a capacitave circuit what will happen? - correct answer-
Capacitive reactance will decrease
What happens in a circuit, when the capacitor voltage equals the source voltage? - correct
answer-Current flow stops in the circuit
In a DC circuit, which is correct about capacitors the instant when power is applied? -
correct answer-Current is maximum
In the circuit shown in figure 1, what will be the total capacitance? - correct 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? - correct answer-5 seconds
What happens in a circuit, when the capacitor voltage equals the source voltage? - correct
answer-Current flow stops in the circuit
which statement best describes one time constant of a capacitor? - correct 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? -
correct 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? - correct answer-5 seconds
If two capacitors in parrallel have equal reactance of 40 ohms what is the total reactance?
- correct answer-20ohms
In capacitors, what is the purpose of the dielectric? - correct answer-Prevent arcing within
the capacitor
Which of the following is true about capacitors in AC circuits? - correct answer-Current
leads voltage all the time
What describes a capacitor s ability to store an electrical charge? - correct answer-
Capacitance
which of the following statements is correct about polarized electrolytic capacitors? -
correct answer-Voltage polarity must be correct
What is the time constant for a circuit with 150k ohms and 2 microfarad capacitor? -
correct answer-.3 seconds
If frequency is increased in a capacitave circuit what will happen? - correct answer-
Capacitive reactance will decrease
What happens in a circuit, when the capacitor voltage equals the source voltage? - correct
answer-Current flow stops in the circuit
In a DC circuit, which is correct about capacitors the instant when power is applied? -
correct answer-Current is maximum
In the circuit shown in figure 1, what will be the total capacitance? - correct 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? - correct answer-5 seconds
What happens in a circuit, when the capacitor voltage equals the source voltage? - correct
answer-Current flow stops in the circuit
which statement best describes one time constant of a capacitor? - correct 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? -
correct 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? - correct answer-5 seconds
If two capacitors in parrallel have equal reactance of 40 ohms what is the total reactance?
- correct answer-20ohms
