Don Mills, Ont. : Southam-MacLean Publications · leaf 490
a single inter-mediate shaft drops the efficiency to 25 per cent.; twointermediate shafts drop it to 12 per cent.; and threeintermediate shafts drop the over-all efficiency awaydown to 6 per cent., or almost nothing. If any reader is not satisfied with the various effi-ciencies used here, he may… … Fig. 3. final efficiency will be. This article was shown to anelectrical engineer, who stated that it would perhapsbe better to use an electrical efficiency of 92 or 93 percent, instead of 90 per cent., although he says that 90per cent, is common. Be that as it may, the abovemethods would remain…
Furniture industry and trade · Woodworking industries
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