183. is the region of a transistor which has highest conductivity.
A. Base
B. Emitter
C. Collector
D. Any of the above
184. Bipolar transistor is a
A. three terminal semiconductor device
B. three layer semiconductor device
C. three junction semiconductor device
D. none of the above
185. Silicon controlled rectifier belongs to
A. diode family
B. triode family
C. thyristor family
D. none of the above
186. Current flow through a bipolar transistor is by means of
A. electrons
B. holes
C. both electrons and holes
D. none of the above
187. Transistor works as an open switch when emitter junction is biased and collector junction is biased
A. forward, reverse
B. reverse, reverse
C. reverse, forward
D. forward, forward
188. Transistor works as a closed switch when emitter junction is biased and collector junction is biased.
A. forward, reverse
B. reverse, reverse
C. reverse, forward
D. forward, forward
189. Transistor works as a variable rheostat when emitter junction is biased and collector junction is biased.
A. forward, reverse
B. reverse, reverse
C. reverse, forward
D. forward, forward
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