33, The opto coupler is most commonly called as
(A) Photo detector (8) Photo tansistor
(C) Opto isolator (10) Darlington transistor
34. The function of RC snubber circuit in lamp dimmer is
(ക) to slow down the rate of rise of voltage applied across the triac
(8) to provide smooth phase control
(0) 10 provide variable firing angle (o triac
(D) to provide effective grounding
35. Semiconductor device BPW 34158
(ക) photo diode (8) photo an....
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