10 volts can be represented by how many discreet levels by 4-bits?
A) fifteen levels including zero B) sixteen levels including zero
C) infinite levels D) four levels
B
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Which of the following is a factor that causes the magnetic field of a three-phase motor to rotate?
a. The voltages of a three-phase system are 90 degrees out of phase with each other. b. The three voltages change polarity at regular intervals. c. The pole pieces are wound such that they will always have the same magnetic polarities. d. The stator windings are arranged around the outside of the motor.
Motors cost ____ to operate on low voltages as high voltages.
a. the same b. more c. less d. double
Describe how pressure builds inside the system.
What will be an ideal response?
Technician A says that lead-acid batteries may be disposed of in landfills. Technician B says that automotive batteries must be disposed of or recycled at dedicated facilities, such as a battery retail store. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B