218. When load current is zero, the zener current will be
A. zero
B. minimum
C. maximum
D. none of the above

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219. The zener current will be minimum when
A. load current is maximum
B. load current is minimum
C. laod current is zero
D. none of the above

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220. An SCR has __ semiconductor layers.pn junctions.
A. two
B. three
C. four
D. none of the above

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221. An SCR is a solid state equivalent of
A. triode
B. pentode
C. gas-filled triode
D. tetrode

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222. An SCR has __ semiconductor layers.
A. two
B. three
C. four
D. none of the above

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223. An SCR has three terminals viz
A. cathode, anode, gate
B. anode, cathode, grid
C. anode, cathode, drain
D. none of the above

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224. An SCR behaves as a____switch.
A. unidirectional
B. bidirectional
C. mechanical
D. none of the above

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