To correct for drift between the sending and receiving oscillators, asynchronous communication systems _______
A) use a third system oscillator to establish a reference frequency
B) require periodic calibration by authorized service personnel
C) coordinate transmissions with a recognized NIST time signal
D) use the start bit of each data packet to resynchronize the oscillators
D
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The plug valve is used to _____.
a. start and stop flow b. regulate flow c. relieve pressure d. regulate the direction of flow
Which of the following lists the full-load currents for three-phase motors with a known winding type, horsepower, and voltage?
a. NEC Table 310.16(A) b. NEC Table 370.16(A) c. NEC Table 430.250 d. NEC Table 440.154
Fill in the blank(s) with the appropriate word(s).
A __________ provides assurance that if the product fails to meet its intended need within a specific time or usage that it will be repaired at no charge
A) Warranty B) Service contract C) Service agreement D) All of the above