In AC circuits, the frequency can be changed.

In DC circuits, capacitors act like a/an ________________.

In DC circuits, inductors act like a/an ________________.

In DC circuits, which of the following is the reactance of a capacitor?

In DC circuits, which of the following is the reactance of an inductor?

Which of the following is the waveform of a DC signal?

Which of the following is the waveform of a AC signal?

In AC circuits, the current is flowing in a single direction.

High-voltage 3-phase AC power is used onboard ships to ensure that motor windings are smaller resulting to a smaller motor.

Which of the following is NOT a reason for using high-voltage 3-phase AC?

Which of the following is the angle of separation between windings of a 3-phase AC generator?

Fuses and circuit breakers will have larger ampacity if we use low-voltage three phase AC onboard ships.

Transmission cables will be larger and more expensive if we use high-voltage three-phase AC onboard ships.

Motors will be noisy due to the fluctuating nature of the single phase AC Voltage unlike for a 3-phase AC voltage.

If we use high-voltage single phase AC, motors will be larger and more costly.

In a purely inductive AC circuit, the current flowing through an inductor lags the voltage by 90 $$\degree$$  .

In a purely capacitive AC circuit, the current flowing through a capacitor lags the voltage by 90 $$\degree$$  .

Which of the following circuit elements shall result to a current that is in-phase with the input voltage?

Which of the following is another term used for a capacitor?

A capacitor stores electrical charge in an electric field.

Which of the following circuit elements is also known as a coil/choke?

An inductor opposes sudden changes in voltage.

During the simulation, the waveforms for AC and DC can be directly observed automatically. In an actual scenario, this is not the case. Which of the following instruments is used to observe the waveform?

Using the beer analogy, the beer inside the glass represents the true power or power dissipated by the resistance of the circuit.

The sum of the apparent power and the reactive power for an AC circuit is the true power.

Reactive power is the power dissipated by an inductor or capacitor as a response to the alternating nature of an AC signal.

An indication of an efficient electrical system is a larger reactive power consumption of the load compared to true power consumption.

Which of the following is the power consumed in an AC circuit that does not perform any useful work but has a big effect on the phase shift between the voltage and current waveforms?

In which of the following elements of the impedance triangle does the apparent power develop?

In an AC circuit, the total resistance is 8 $$\Omega$$   while the total reactance is 6 $$\Omega$$  . Which of the following is the total impedance of the circuit?

At what frequency will an 80.0 mF capacitor have a reactance of 0.250 Ω?

What current flows when a 60.0 Hz, 480 V AC source is connected to a 0.250 μF capacitor?

What value of inductance should be used if a 20.0 kΩ reactance is needed at a frequency of 500 Hz?

Solve for the total impedance of this circuit.