Discussion
Match List I with List II and select the correct answer using codes given below :
| List I | List II |
|---|---|
| (a) BJT | (i) High β |
| (b) JFET | (ii) Voltage regulator |
| (c) ZENER diode | (iii) Insulated gate voltage controlled current |
| (d) MOSFET | (iv) Reverse biased gate |
Answer: D
The correct matching is a-i, b-iv, c-ii, d-iii.
- BJT: a high current gain β is its characteristic figure of merit (i).
- JFET: the gate-channel junction is operated reverse biased (iv).
- Zener diode: used in reverse breakdown as a voltage regulator (ii).
- MOSFET: an insulated gate controls the drain current by voltage (iii).
The other codes give the BJT a reverse biased gate or a voltage-regulator role, or give the JFET the insulated gate, which belongs to the MOSFET; a JFET has no oxide layer between gate and channel.
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