MCQOPTIONS
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				| 1. | 
                                    Turndown ratio of a gas burner is equal to the | 
                            
| A. | maximum to minimum heat input ratio. | 
| B. | maximum to minimum permissible gas flow rate. | 
| C. | both (a) & (b). | 
| D. | minimum to maximum heat input ratio. | 
| Answer» D. minimum to maximum heat input ratio. | |