An electrical switch that operates under the control of an outside electrical signal is a ____.
In a DDC system, which component responds to changes in the…
In a DDC system, which component responds to changes in the signals from sensors and issues signals to controlled devices?
The type of fuse that blows after its maximum rating has bee…
The type of fuse that blows after its maximum rating has been exceeded for a certain period of time is a ____ fuse.
In a closed-loop control system, sensors monitor a condition…
In a closed-loop control system, sensors monitor a conditioned space and send ____ to a controller, which is information about how the conditions in the area have changed.
Reducing a system’s cut-out temperature without changing its…
Reducing a system’s cut-out temperature without changing its cut-in temperature is an example of ____.
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.
Although permanent split capacitor motors have low starting…
Although permanent split capacitor motors have low starting torque, they operate the same as a ____ motor operates in running mode, but not starting mode.
Which type of single-phase induction motor has the starting…
Which type of single-phase induction motor has the starting torque to start under heavy loads?
The magnetic field generated in the rotor induces a voltage…
The magnetic field generated in the rotor induces a voltage called ____ that has a polarity opposite of the applied voltage’s polarity.
Instead of coils of wire, a squirrel cage rotor has ____ mou…
Instead of coils of wire, a squirrel cage rotor has ____ mounted on an iron core.