Match List-I with List-II.
| List-I (Power Device) | List-II (Operation Type) |
|---|---|
| A. DIAC | I. Bipolar mode MOSFET |
| B. TRIAC | II. Bidirectional Diode Thyristor |
| C. IGBT | III. Unilateral Thyristor |
| D. SCR | IV. Bidirectional Triode Thyristor |
Options:
- A-II, B-I, C-IV, D-III
- A-I, B-III, C-IV, D-II
- A-I, B-II, C-III, D-IV
- A-II, B-IV, C-I, D-III
Solution
Step 1: Identify DIAC
- DIAC stands for Diode for Alternating Current.
- It conducts in both directions after breakover voltage is reached.
- Hence it is a Bidirectional Diode Thyristor.
A → II
Step 2: Identify TRIAC
- TRIAC stands for Triode for Alternating Current.
- It can conduct current in both directions.
- Hence it is a Bidirectional Triode Thyristor.
B → IV
Step 3: Identify IGBT
- IGBT stands for Insulated Gate Bipolar Transistor.
- It combines MOSFET gate characteristics with bipolar transistor conduction.
- Therefore it is referred to as a Bipolar mode MOSFET.
C → I
Step 4: Identify SCR
- SCR stands for Silicon Controlled Rectifier.
- It conducts in only one direction.
- Hence it is a Unilateral Thyristor.
D → III
Final Matching
| Device | Operation Type |
|---|---|
| A. DIAC | II. Bidirectional Diode Thyristor |
| B. TRIAC | IV. Bidirectional Triode Thyristor |
| C. IGBT | I. Bipolar mode MOSFET |
| D. SCR | III. Unilateral Thyristor |
A-II, B-IV, C-I, D-III
Correct Option: 4 ✅
Further Reading:
GATE EC Previous Year Papers with Solutions