MCQOPTIONS
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				| 1. | 
                                    Class A and class B chopper | 
                            
| A. | operate in first quadrant | 
| B. | operate in second quadrant | 
| C. | class A chopper operates in first quadrant while class B operates in second quadrant | 
| D. | may operate in either first or second quadrant | 
| Answer» D. may operate in either first or second quadrant | |