Control motors are divided into two classifications
a) large and small
b) AC and DC
c) valve operators and damper operators
d) high voltage and low voltage
e) pump and fan controllers
Answer: C
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Power Engineering Chapter 109
- Transmitters or transducers can measure
- Electronic controllers can be divided into two types
- An example of a final control element is a
- In a basic electrical control system the device that senses a drop in air temperature is called the
- An example of a controlled device would be
- Pressure controllers can be divided into two classes
- A room thermostat should be mounted on an inside wall about
- A bimetal thermostat's operating range is between
- On-off thermostats are equipped with
- Thermostats may be classified according to their
- A device used to position dampers and control valves is termed
- The electrical resistance of a thermistor will:
- An electronic control system is comprised of a:
- An advantage of an electronic control system is that:
- Authority or Compensation Authority is the:
- Resistance temperature devices can provide a relatively linear resistance variation from:
- A direct acting controller:
- An electronic controller is:
- Setpoint deviation is also called:
- A pressure sensor converts pressure changes into:
- Proportional band or throttling range is the:
- A transducer is a device that is used to: