FCC Element 3 Exam Questions and Answers
100% Pass
What is the term for the out-of-phase power associated with inductors and capacitors? - ✔✔Reactive
power
The opposition to the creation of magnetic lines of force in a magnetic circuit is known as: -
✔✔Reluctance.
What is the relative dielectric constant for air? - ✔✔1
How would you calculate the total capacitance of three capacitors in parallel? - ✔✔CT = C1 + C2 + C3.
How does the input impedance of a field-effect transistor compare with that of a bipolar transistor? -
✔✔An FET has high input impedance; a bipolar transistor has low input impedance.
By what factor must the voltage of an AC circuit, as indicated on a scale of an AC voltmeter, be multiplied
to obtain the peak voltage value? - ✔✔1.414
What is a sine wave? - ✔✔A wave whose amplitude at any given instant can be represented by the
projection of a point on a wheel rotating at a uniform speed.
Halving the cross-sectional area of a conductor will: - ✔✔Double the resistance
Which of the following Ohms Law formulas is incorrect? - ✔✔I = R / E
What is the maximum DC or RMS voltage that may be connected across a 20 watt, 2000 ohm resistor? -
✔✔200 volts
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, What is the most the actual transmitter frequency could differ from a reading of 156,520,000 hertz on a
frequency counter with a time base accuracy of ± 1.0 ppm? - ✔✔156.52 Hz
What is the RMS value of a 340-volt peak-to-peak pure sine wave? - ✔✔120 volts AC
746 watts, corresponding to the lifting of 550 pounds at the rate of one-foot-per-second, is the
equivalent of how much horsepower? - ✔✔One horsepower
What is the meaning of the term "time constant of an RC circuit"? The time required to charge the
capacitor in the circuit to: - ✔✔63.2% of the supply voltage
What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors
all in series? - ✔✔220 seconds
In rectangular coordinates, what is the impedance of a network composed of a 1.0-millihenry inductor in
series with a 200-ohm resistor, at 30 kHz? - ✔✔200 + j188
What is the impedance of a network composed of a 100-picofarad capacitor in parallel with a 4000-ohm
resistor, at 500 KHz? Specify your answer in polar coordinates. - ✔✔2490 ohms, /-51.5 degrees
Given a power supply with a full load voltage of 200 volts and a regulation of 25%, what is the no load
voltage? - ✔✔250 volts
What is the photoconductive effect? - ✔✔The increased conductivity of an illuminated semiconductor
junction.
In Figure 3C5, which capacitor (labeled 1 through 4) is being used as a bypass capacitor? - ✔✔3
What is the ratio of the output frequency to the input frequency of a single-phase full-wave rectifier? -
✔✔2:1
Page 2/10
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100% Pass
What is the term for the out-of-phase power associated with inductors and capacitors? - ✔✔Reactive
power
The opposition to the creation of magnetic lines of force in a magnetic circuit is known as: -
✔✔Reluctance.
What is the relative dielectric constant for air? - ✔✔1
How would you calculate the total capacitance of three capacitors in parallel? - ✔✔CT = C1 + C2 + C3.
How does the input impedance of a field-effect transistor compare with that of a bipolar transistor? -
✔✔An FET has high input impedance; a bipolar transistor has low input impedance.
By what factor must the voltage of an AC circuit, as indicated on a scale of an AC voltmeter, be multiplied
to obtain the peak voltage value? - ✔✔1.414
What is a sine wave? - ✔✔A wave whose amplitude at any given instant can be represented by the
projection of a point on a wheel rotating at a uniform speed.
Halving the cross-sectional area of a conductor will: - ✔✔Double the resistance
Which of the following Ohms Law formulas is incorrect? - ✔✔I = R / E
What is the maximum DC or RMS voltage that may be connected across a 20 watt, 2000 ohm resistor? -
✔✔200 volts
Page 1/10
Crafted for Academic Insight by ©KatelynWhitman 2025. All rights reserved.
, What is the most the actual transmitter frequency could differ from a reading of 156,520,000 hertz on a
frequency counter with a time base accuracy of ± 1.0 ppm? - ✔✔156.52 Hz
What is the RMS value of a 340-volt peak-to-peak pure sine wave? - ✔✔120 volts AC
746 watts, corresponding to the lifting of 550 pounds at the rate of one-foot-per-second, is the
equivalent of how much horsepower? - ✔✔One horsepower
What is the meaning of the term "time constant of an RC circuit"? The time required to charge the
capacitor in the circuit to: - ✔✔63.2% of the supply voltage
What is the time constant of a circuit having two 220-microfarad capacitors and two 1-megohm resistors
all in series? - ✔✔220 seconds
In rectangular coordinates, what is the impedance of a network composed of a 1.0-millihenry inductor in
series with a 200-ohm resistor, at 30 kHz? - ✔✔200 + j188
What is the impedance of a network composed of a 100-picofarad capacitor in parallel with a 4000-ohm
resistor, at 500 KHz? Specify your answer in polar coordinates. - ✔✔2490 ohms, /-51.5 degrees
Given a power supply with a full load voltage of 200 volts and a regulation of 25%, what is the no load
voltage? - ✔✔250 volts
What is the photoconductive effect? - ✔✔The increased conductivity of an illuminated semiconductor
junction.
In Figure 3C5, which capacitor (labeled 1 through 4) is being used as a bypass capacitor? - ✔✔3
What is the ratio of the output frequency to the input frequency of a single-phase full-wave rectifier? -
✔✔2:1
Page 2/10
Crafted for Academic Insight by ©KatelynWhitman 2025. All rights reserved.
