Basic Electric Devices
An electronic control that is composed of two diodes in a single device that is commonly used as relays in electrical circuits describes a _________________.
What is Triac?
Which material is most commonly used to make semiconductors?
What is Silicon?
What can a technician use to help them troubleshoot problems with electronic controls? (3 choices)
1. What are diagnostic codes from the electronic controls?
2. What are troubleshooting charts from the manufacturer?
3. What are wiring diagrams?
Cad cells used to detect the flame on oil furnaces experience a change of resistance in the presence of ____________________.
What is light?
What electrical component was commonly used in electronic equipment before solid state devices?
What are vacuum tubes?
Materials that have a resistance between that of conductors, such as copper, and insulators, such as glass, are known as?
What are Semiconductors?
What is an electronic device that gives off light when electrical current passes through it?
What is an LED light?
What device is controlled by the electronic module that is used to make adjustment to the amount of openness of an electronic expansion valve?
What is a stepper motor?
An electronic device that converts pressure into electrical signals that can be used by electronic control modules describes a _________________.
What is a transducer?
How are the diagnostic codes conveyed to the technician by most electronic gas furnace control modules?
What are flashing LED codes?
A solid-state device that allows electrical current flow in only one direction best describes a ________.
What is a Diode?
What would a simple control circuit that is used to control temperature use as a sensor or input device?
What is a thermistor?
What is an example of a one-function electronic control device?
What is an electronic time-delay?
An electronically controlled valve that controls the flow rate of refrigerant into a refrigeration evaporator based upon operating conditions of the system describes a(n) __________________.
What is an EEV or Electronic expansion valve?
Electronic circuits are sensitive to? (3 choices)
1. What is heat?
2. What are current surges and voltage spikes?
3. What is electric interference?
Which solid-state device can be used to convert alternating current to direct current?
What is a Rectifier?
A resistor that changes resistance as it's temperature changes describes a __________.
What is a thermistor?
What type of timer is used to prevent two major loads from staring at the same time?
What is a delay-on-make timer?
What conditions do three-phase motor protection modules protect the motor? (3 choices)
1. What is high current draw?
2. What is phase loss or reversal?
3. What is low voltage?
Electronic controls are used in the heating and cooling industry for ______________. (3 choices)
1. What are temperature controls?
2. What are Motor controls?
3. What are gas furnace controls?
A solid-state device that can be used to amplify a signal describes a ____________.
What is a transistor?
The resistance of a negative temperature coefficient thermistor will ___________ as the temperature increases.
What is decrease?
What is an electronic device used to prevent loads from stopping and starting in rapid secession?
What is an anti-short-cycling timer?
What type of motor protection device uses a module to senses the temperature of the motor windings using thermistors that are placed inside the motor?
What is electronic motor overload?
Thermistors are used in which of the following applications in the heating and cooling industry? (3 choices)
1. What are sensors for motor overload protection?
2. What are start assist devices for PSC motors?
3. What are temperature sensors to send signals to electronic control modules?