- (A) capacitor
- (B) inductor
- (C) on switch
- (D) off switch
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- (A) pentavalent
- (B) trivalent
- (C) divalent
- (D) tetravalent
- (A) majority carriers
- (B) minority carriers
- (C) dual carriers
- (D) blockers
- (A) Less than ordinary light
- (B) More than ordinary light
- (C) Equal to ordinary light
- (D) Different for different colours or frequency
- (A) Further stimulation
- (B) Lasing more
- (C) For producing more energetic lasers
- (D) All
- (A) 105 ohm metre
- (B) 106 ohm metre
- (C) 107 ohm metre
- (D) 108 ohm metre
- (A) Conduction band
- (B) Fermi band
- (C) Valence band
- (D) Forbidden band
- (A) during the manufacturing process
- (B) under forward bias
- (C) under reverse bias
- (D) when temperature varies
- (A) equal to emitter current
- (B) slightly less than emitter current
- (C) greater than emitter current
- (D) any of above
- (A) n
- (B) p
- (C) mix
- (D) any of above

