Exam 16: Temperature Switches

Thermistors are actually__________ sensitive semiconductor devices.

Because the voltage of thermocouples is so low, they are often connected in series. This connection is referred to as a ____.

One common method of sensing temperature is by the increase of pressure of some chemicals.

A thermistor with a negative temperature coefficient will exhibit an increase of resistance with an increase in temperature.

The_________ relay is so named because it uses a length of resistive wire connected in series with the motor to sense motor current.

Electrical contacts must never be permitted to open or close slowly.

The bimetal strip is made by bonding two________ types of metal together.

The amount of voltage produced by a thermocouple is generally in the order of megavolts.

A bimetal strip is often formed into a spiral.

Because of the thermistor's ability to change its resistance ,________ they are commonly used as solid­state starting relays.