Author: Anonymous

Mechanically held contactors and relays are often referred to as ____________________ contactors or relays.

Line voltage devices may have contacts rated for 15 to ____________________ amperes.

When M coil energizes, only the first M contact changes position.

If R coil energizes, all R contacts change position.

____________________ push buttons combine the operation of a selector switch and push button in the same unit.

When one side of the secondary winding of a control transformer is grounded, the control system is referred to as a(n) ____________________ system.

Integral horsepower manual starters with low voltage release will restart automatically after a power failure without being reset.

Magnetic type overload relays are sensitive to ambient temperature.

High voltage surges are harmless and cannot damage electronic components connected to the power line.

Protection can be placed on the primary or secondary side of the control transformer.