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Halaman 275
... watts , is only 49.7 percent efficient , while if turned to medium . using 750 watts , the efficiency is increased to 53 I percent . 66 The 1200 - watt unit , 7 1 / 2 - in . dia . shows 56.8 percent , and only 54.8 percent when turned ...
... watts , is only 49.7 percent efficient , while if turned to medium . using 750 watts , the efficiency is increased to 53 I percent . 66 The 1200 - watt unit , 7 1 / 2 - in . dia . shows 56.8 percent , and only 54.8 percent when turned ...
Halaman 618
... watt and larger , about 17 percent being under the 50 - watt size , thus maintaining the 50 - watt standard to the entire satisfaction of the customer . AVERAGE CANDLEPOWER , WATTS AND EFFICIENCY Table IV gives the average candlepower , ...
... watt and larger , about 17 percent being under the 50 - watt size , thus maintaining the 50 - watt standard to the entire satisfaction of the customer . AVERAGE CANDLEPOWER , WATTS AND EFFICIENCY Table IV gives the average candlepower , ...
Halaman 619
National Electric Light Association. Convention. 56 52 TOTAL WATTS 48 12 44 11 AVERAGE CANDLEPOWER , 40 WATTS AND LUMENS PER 10 WATT OF LAMPS SOLD IN THE 36 UNITED STATES 1907-1916 32 28 24 20 AVERAGE LUMENS PER CANDLEPOWER PER WATT 9 6 ...
National Electric Light Association. Convention. 56 52 TOTAL WATTS 48 12 44 11 AVERAGE CANDLEPOWER , 40 WATTS AND LUMENS PER 10 WATT OF LAMPS SOLD IN THE 36 UNITED STATES 1907-1916 32 28 24 20 AVERAGE LUMENS PER CANDLEPOWER PER WATT 9 6 ...
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