Engine_2014 : Motor Plants and Auxiliary Boilers - 2574/2614
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| Which of the operating characteristics listed applies to the Roots-type blower shown in the illustration? |
| A) Each set of lobes is independently driven, assuring proper timing. |
| B) Compression of the air is accomplished between the rotors. |
| C) Air delivery is approximately proportional to engine speed. |
| D) All of the above |
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Illustration MO-0082
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