An open-loop system:
A) Controls conditions for machines that are open to the air.
B) Monitors conditions that it can control.
C) Monitors conditions that it cannot control.
D) Connects to the main controller through an open wireless system.
[Ques. 2] Which ice is often added to drinks and is easy to chew?
A) Crushed ice B) Flake ice C) Cubed ice D) Shaved ice
[Ques. 3] Why are capacitors rated at higher voltages than the unit line voltage?
A) Charging and discharging in series with an inductive load subjects them to high voltage.
B) Capacitors increase the voltage to the motor.
C) They are overrated as a safety measure.
D) They are charged with a high voltage at the factory.
[Ques. 4] After installing a new electric furnace, the technician measures the temperature rise and finds that it exceeds the manufacturer's specifications. To reduce the temperature rise, the technician should:
A) Increase the fan speed. B) Decrease the fan speed.
C) Reduce the incoming voltage to the furnace. D) Unwire one of the strip heaters.
[Ques. 5] A system that monitors the return air temperature to control room temperature is:
A) An open-loop control system. B) A closed-loop control system.
C) An ambient-loop control system. D) An integrated-loop control system.
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