Draw the circuit diagram of transistor as an oscillator and explain its working.

Explanation

### Step-by-Step Solution

**Step 1: Draw the Circuit Diagram**
To illustrate a transistor as an oscillator, we start by drawing the circuit diagram. The circuit consists of an NPN transistor, a tank circuit (which includes an inductor L and a capacitor C), and a few resistors for biasing.

1. **Transistor**: Place an NPN transistor in the center.
2. **Tank Circuit**: Connect an inductor (L) and a capacitor (C) in parallel to form the tank circuit. This tank circuit is responsible for generating oscillations.
3. **Biasing Resistors**: Connect resistors to the base of the transistor for proper biasing.
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