MCQOPTIONS
 Saved Bookmarks
				| 1. | 
                                    In figure, D1 turns on when | 
                            
| A. | vi is more than V1 | 
| B. | vi is less than V1 | 
| C. | vi is between V1 and V2 | 
| D. | none of the above | 
| Answer» B. vi is less than V1 | |