Power Semiconductor Devices – Exercise – 1

Power Semiconductor Devices » Exercise – 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
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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
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3. A triac is a ………… switch.

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

Answer
Answer : (c)
Explanation
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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
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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)
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