MCQOPTIONS
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MCQOPTIONS
| 1. |
Maximum economy of engine, is obtained at the air fuel ratio of _________ |
| A. | 13.5:1 to 15:1 |
| B. | 13.5:1 to 15:1 |
| C. | 8:1 to 15:1 |
| D. | 7:1 to 10:1 |
| Answer» B. 13.5:1 to 15:1 | |