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
2. A triac is equivalent to two SCRs …………
(a) in parallel
(b) in series
(c) in inverse-parallel
(d) none of the above
3. A triac is a ………… switch.
(a) bidirectional
(b) undirectional
(c) mechanical
(d) none of the above
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
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
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