Difficulty: Easy
Correct Answer: Source, Gate, Drain
Explanation:
Introduction / Context:Device terminal identification is foundational for correct connection and analysis. Power MOSFETs dominate switching converters, motor drives, and SMPS designs, and their three terminals have standardized names.
Given Data / Assumptions:
Concept / Approach:A MOSFET has a Gate (G) controlling channel conductivity between Source (S) and Drain (D). In contrast, BJTs have Emitter, Base, Collector; SCRs have Anode, Cathode, Gate. Therefore, the correct terminal set for a MOSFET is Source, Gate, Drain.
Step-by-Step Solution:
Map device family → MOSFET.Recall standard names → Source, Gate, Drain.Eliminate names belonging to BJTs (E, B, C) or thyristors (A, K, G).Verification / Alternative check:
Check typical MOSFET symbol: Arrow on body diode indicates S–D orientation; gate insulated from channel.Why Other Options Are Wrong:
Emitter/Base/Collector → BJT; Cathode/Anode/Gate → SCR/triac family; mixed sets are invalid.Common Pitfalls:
Confusing BJT and MOSFET terminals due to similar three-lead packaging.Final Answer:
Source, Gate, Drain
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