UNIT 14 AUTOMATIC CONTROL COMPONENTS AND APPLICATIONS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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Course
GXMO
Institution
GXMO
UNIT 14 AUTOMATIC CONTROL COMPONENTS AND APPLICATIONS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
The control voltage that is typically used in split type residential central air conditioning systems is - ANSWER 24 v
What device is used to produce the control voltage that is used to power the con...
UNIT 14 AUTOMATIC CONTROL COMPONENTS AND
APPLICATIONS QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
The control voltage that is typically used in split type residential central air conditioning systems is -
ANSWER 24 v
What device is used to produce the control voltage that is used to power the control circuits of a split
type residential central a/c system - ANSWER Step down transformer
All of the following are true statements regarding line voltage thermostats and control wiring except? -
ANSWER Line voltage thermostats and controls are not as sensitive as low voltage thermostats
System lag is the result of which of the following with regards to a heating system? - ANSWER The time it
takes for a heating system to start producing heat
System overshoot is the result of which of the following with regards to a heating system? - ANSWER The
residual system of heat increasing the space temperature.
The low voltage control circuit for a typical residential a/c system typically draws a maximum of how
much amperage? - ANSWER 1.7 A
Which of the following is likely to be found on a line voltage thermostat? - ANSWER Locking or otherwise
secure cover
If a heated space reaches a maximum temperature of 78 degrees and a minimum temperature of 71
degrees, the difference between these two temperatures is referred to as? - ANSWER temperature swing
Why is measuring the temperature of a solid object challenging for a HVACR technician? - ANSWER The
entire thermometer probe must be at the temperature of the solid
What method is most likely to be used to measure the temperature of a liquid contained in an open
vessel? - ANSWER Immersion
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