2. Including a full-wave rectifier in an AC circuit will yield a(n) _______ current.
A. continuous alternating
B. continuous direct
C. intermittent direct
D. intermittent alternating
6. Which of the following frequencies falls in the range of RF waves used by commercial radio
broadcasting stations?
A. 6,000 Hz
B. 60 Hz
C. 6,000,000 Hz
D. 600,000 Hz
The AM broadcast range is 550 kHz to 1600 kHz. Changing to Hz that is 550,000 to 1,600,000. So the answer would be D?
The question is a little misleading since FM is also used in the broadcast range and it is 88-108 MHz.
To determine the correct answer, we need to understand what a full-wave rectifier does in an AC circuit.
A full-wave rectifier is a device that converts alternating current (AC) to direct current (DC). It essentially converts the negative half-cycles of the AC waveform into positive half-cycles, resulting in a unidirectional flow of current.
Since a full-wave rectifier converts AC to DC, it produces a continuous direct current flow. Therefore, the answer is B. continuous direct.
To understand the concept better, you can take the following steps to visualize the process:
1. Start with an AC circuit where the current oscillates between positive and negative values.
2. Introduce a full-wave rectifier into the circuit, which consists of diodes that allow current flow in only one direction.
3. As the AC current flows through the rectifier, the negative half-cycles are inverted to positive half-cycles. This effectively eliminates the negative part of the waveform.
4. The output of the rectifier is a waveform that only contains positive half-cycles, resulting in a continuous direct current.
By following these steps, you can see why using a full-wave rectifier in an AC circuit yields a continuous direct current flow.