225. An SCR is sometimes called
A. triac
B. diac
C. unijunction transistor
D. thyristor

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226. An SCR is made of
A. germanium
B. silicon
C. carbon
D. none of the above

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227. In the normal operation of an SCR,anode is _____ w.r.t. cathode.
A. at zero potential
B. negative
C. positive
D. none of the above

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228. In normal operation of an SCR, gate is ___ w.r.t. cathode.
A. positive
B. negative
C. at zero potential
D. none of the above

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229. An SCR combines the features of
A. a rectifier and resistance
B. a rectifier and transistor
C. a rectifier and capacitor
D. none of the above

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230. The control element in an SCR is
A. cathode
B. anode
C. anode supply
D. gate

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231. The normal way to turn on an SCR is by
A. breakover voltage
B. appropriate anode current
C. appropriate gate current
D. none of the above

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