MCQOPTIONS
 Saved Bookmarks
				| 1. | 
                                    In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called$? | 
                            
| A. | Lead | 
| B. | Steam lap | 
| C. | Exhaust lap | 
| D. | None of these | 
| Answer» C. Exhaust lap | |