The current obtained from a simple filterless rectifier is

Options

A. Constant direct current
B. Varying direct current
C. Half current
D. Eddy current

Answer

To solve the question regarding the current obtained from a simple filterless rectifier, we can break it down step by step.

### Step 1: Understand the Types of Rectifiers
Rectifiers are devices that convert alternating current (AC) to direct current (DC). There are two main types of rectifiers:
- **Half-Wave Rectifier**: Allows only one half of the AC waveform to pass through, blocking the other half.
- **Full-Wave Rectifier**: Allows both halves of the AC waveform to be used, effectively doubling the frequency of the output.

### Step 2: Analyze the Output Waveform
For a simple filterless rectifier, we typically refer to a half-wave rectifier. The output waveform of a half-wave rectifier consists of only the positive half of the input AC signal. This means that the output is not a constant DC but rather a pulsating signal.

### Step 3: Identify the Nature of the Current
The current output from a half-wave rectifier is not constant; it varies with time. This is because the rectifier only allows current to flow during the positive half-cycles of the AC input. The output current will rise to a maximum value and then drop to zero during the negative half-cycle.

### Step 4: Determine the Correct Option
Given the options:
1. Constant Direct Current
2. Varying Direct Current
3. Half Current
4. Eddy Current

Since the output current from a simple filterless rectifier (specifically a half-wave rectifier) is not constant but varies with time, the correct answer is **Option 2: Varying Direct Current**.

### Final Answer
The current obtained from a simple filterless rectifier is **Varying Direct Current**.

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