Class 2 or Class 3 audio circuit conductors in accordance with section 640.9 of the NEC®, __________ occupy the same cable or raceway with other Class 2 or Class 3 remote control or signaling circuits.
A. Shall not be permitted to
B. Shall
C. Shall be permitted to
D. Must
A. Shall not be permitted to
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An interest rate of 18% per year, compounded continuously, is closest to an effective:
(a) 1.51% per quarter (b) 4.5% per quarter (c) 4.6% per quarter (d) 9% per 6 months
The continuity through a heat relay is checked using a(n) ____.
A. ohmmeter B. voltmeter C. clamp-on ammeter D. micron gauge
An isometric drawing is a three dimensional pictorial representation of an object.
Answer the following statement true (T) or false (F)
A transformer is to be used to match an 8- ? loudspeaker to a 500-? audio line. What is the turns ratio of the transformer, and what are the voltages at the primary and secondary terminals when 10 W of audio power is delivered to the speaker? Assume that the speaker is a resistive load and that the transformer is ideal.
Find: a) The turns ratio of the transformer. b) The voltages at the primary and secondary terminals when 10W of audio power is delivered to the speaker. Assumptions: The speaker is a resistive load and the transformer is ideal.