Power Semiconductor Devices – 1 – 1

1. A triac has three terminals viz. ………………..

(a) drain, source, gate
(b) two main terminal and a gate terminal
(c) cathode, anode, gate
(d) none of the above

Answer
Answer : (b)

Explanation
No answer description available for this question. Let us discuss.

2. A triac is equivalent to two SCRs …………

(a) in parallel
(b) in series
(c) in inverse-parallel
(d) none of the above

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

3. A triac is a ………… switch.

(a) bidirectional
(b) undirectional
(c) mechanical
(d) none of the above

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

4. The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ………… in the first quadrant.

(a) transistor
(b) SCR
(c) UJT
(d) none of the above

Answer
Answer : (b)

Explanation
No answer description available for this question. Let us discuss.

5. A triac can pass a portion of ………… halfcycle through the load.

(a) only positive
(b) only negative
(c) both positive and negative
(d) none of the above

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

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