Answer the following statement(s) true (T) or false (F)
1. Electromechanical relays, contactors, and motor starters operate by dissimilar principles, as indicated by differences in the amount of current that each associated contact must switch.
2. The action of relay contacts is to switch something “on” or “off ” depending on the configuration.
3. The silicon-controlled rectifier (SCR) is one of the most popular solid-state devices for controlling large and small electrical power loads.
4. The SCR conducts when the voltage across it is in the reverse direction, and also conducts in the forward direction when the proper signal (voltage) is applied to the gate terminal
5. Mechanical timers use air, a diaphragm, and an operating solenoid to cause a time delay.
1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. FALSE
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