If a square wave input produces 0 V output from an RC integrator, ________
A) the capacitor is open B) the resistor is open
C) the capacitor is leaky D) the resistor is shorted
B
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What gear would you use to transmit power smoothly through a low power range?
A. Spur B. Worm C. Bevel D. Helical
What precaution may have to be taken for long adjustable extensions when configuring a large offset angle in the jib?
a. Avoiding too-large an offset b. Lowering the front outriggers during the adjustment c. Reducing the amount of counterweight d. Ensuring workers have fall protection when setting the offset
A variation of spray transfer welding in which current is cycled from high to low is _____
a. short circuit welding b. globular transfer welding c. radial transfer welding d. pulsed transfer welding
Which of the following factors determine the synchronous speed of an AC motor?
A. inductance of the rotor windings B. the frequency of the applied voltage C. the number of field poles per phase D. the physical load driven by the motor E. both b and c