Be sure to provide proper and adequate support for the duct system according to ____.
A. installation instructions
B. local building codes
C. state building rules
D. environmental regulations
Answer: B
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Unbalanced seals have a _____ face loading than balanced seals
a. lower b. higher c. lighter d. more evenly distributed
A half-wave rectifier circuit with a 60 Hz input uses a 470 ?F capacitor. Load current (IL) is 25 mA. The circuit's ripple output is
A) ? 416 mVPP B) ? 208 mVPP C) ? 887 mVPP D) ? 887 ?VPP
The performance of the resistance-start, induction-run motor and the capacitor-start, induction-run motor is basically identical
Indicate whether the statement is true or false
The diodes in half-wave and full-wave rectifiers should be operated at ____ of their rated value to allow for changes in the input voltage.
A. 20% B. 40% C. 60% D. 80%