Three characteristics of a sine wave carrier are amplitude, frequency, and ____________
A. phase
B. intelligence
C. voltage
D. bandwidth
A
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In the air conditioning field, variable frequency drive is ____ used to control the speed of blower motors.
a. never b. often c. always d. rarely
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? Identify and state the historical significance of Samuel Tilden.
What will be an ideal response?
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Deburring tools are used for:
A) Removing rough edges from electrical wiring. B) Removing splinters from wood frame members. C) Removing the small burr left by pipe cutters. D) Preparing a compressor head before applying a head gasket.
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The conductor size, fuse or circuit breaker size, and overload size are generally determined using the ____.
A. NEMA Code letter B. National Electrical Code C. SF D. voltage
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