The water pump circuit will cause the pumps to alternate running each time the ____ switch closes its contacts.

When an electric arc occurs in air, gas molecules in the air ____.

The PLC is a special type of ____ designed to perform a special function.

                               Motor 1                                         Motor 2                                       Motor 3 Phase:                        3                                                      3                                                    3 Horsepower:            20                                                    60                                                 100 S.F.                             1.25                                                 1.25                                              1.25 Volts:                          480                                                  480                                               480 Amperes:                   23                                                    72                                                  96    Type:                        Induction                                     Induction                                   Synchronous OCPD:           Dual Element Time-delay           Dual Element Time-delay            Dual Element Time-delay Determine the OCPD for the main feeder.

Most common squirrel-cage motors used in industry fall into the design ____ classification.

An induction motor is much like a(n) ____, except that the secondary winding and core are mounted on a shaft set in bearings.

The ____ input terminal is connected to the neutral or grounded power conductor.

The ____ is used to connect the CPU to the load.

One method used by circuit breakers to sense circuit current is to connect a(n) ____ in series with the load.

SCRs and GTOs are ____ and have the ability to handle a greater amount of current than transistors.