The force that causes electrons to flow is most commonly called _____
a. current
b. resistance
c. voltage
d. power
c
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On a vernier transit level, the line of sight is perpendicular to the horizontal axis when the telescope level bubble is centered and the vertical circle/arc is set at _____.
a. 0 degrees b. 90 degrees c. 180 degrees d. 270 degrees
Steel is used for reinforcement because it _____
a. will not corrode b. has nearly the same temperature expansion and contraction rate as concrete c. has a lower temperature expansion and contraction rate than concrete d. is inexpensive
Which of the following is a benefit derived from using a pulsewidth-modulated (PWM) variable frequency
drive (VFD) versus an analog SCR VFD? a. Controlled starting b. Reduced problems with harmonics c. Adjustable torque limiting d. Adjustable operating speed
Which statement is true about carbon monoxide (CO)?
A. It is a result of too much combustion B. It is a result of a lean air fuel ratio C. It is a result of a misfire D. It is a result of a rich air fuel ratio