A(n) ____ element opens an electrical circuit when the temperature rises.
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A controlled device that changes an input energy (fluid, the…
A controlled device that changes an input energy (fluid, thermal, electrical, etc.) into mechanical motion is a(n) ____.
An electrical switch that operates under the control of an o…
An electrical switch that operates under the control of an outside electrical signal is a ____.
To reduce or eliminate electrical arcing in an electrical co…
To reduce or eliminate electrical arcing in an electrical control, use ____.
If the low-side pressure drops below a safe limit due to ref…
If the low-side pressure drops below a safe limit due to refrigerant loss or an evaporator freeze-up, a(n) ____ switches off the compressor motor.
The temperature or pressure value at which a device begins o…
The temperature or pressure value at which a device begins operation is its ____.
Which type of relay prevents a circuit from restarting until…
Which type of relay prevents a circuit from restarting until the power to its coil is interrupted?
A ____ switch is one that must be actuated to provide power…
A ____ switch is one that must be actuated to provide power to a circuit.
On a capacitor-start, induction-run motor, a centrifugal swi…
On a capacitor-start, induction-run motor, a centrifugal switch or relay disconnects ____ when the motor reaches about 75% of its rated speed.
Slip is the difference between a motor’s synchronous speed a…
Slip is the difference between a motor’s synchronous speed and its rated ____ speed.