Tape is used to seal insulation around 12 pieces of ducting. Each piece of duct needs two strips of tape. The first strip of tape measures 1.87 meters. The second strip measures 64 centimeters. The strips are cut from a 60-meter-long roll of tape. How much tape will be left after the 12 pieces of ducting are sealed?
Fill in the blank(s) with the appropriate word(s).
29.88 m
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Calculate the following:
A 120 V (rms), 60 Hz source is connected to a full-wave bridge. The load is an arc welding machine that can be represented by a resistance of 1 ? in series with an inductive reactance of 3 ?. At a triggering
angle of 60o, the current of the load is continuous.
a. Average voltage across the load
b. Average voltage across the resistive element of the load
c. Average current of the load
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