 
			 
			MCQOPTIONS
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				| 1. | You find that there is no output signal. You measure the dc voltage of Q1 emitter and find it equal to 0 V. The trouble might be | 
| A. | D1 is shorted. | 
| B. | D2 is shorted. | 
| C. | R1 is open. | 
| D. | no trouble, everything is normal. | 
| Answer» D. no trouble, everything is normal. | |