What is the polarized field frequency relay responsible for?

What will be an ideal response?


The polarized field frequency relay is responsible for sensing the speed of the rotor and controlling the operation of the field contactor.

Trades & Technology

You might also like to view...

For students of horticulture, ____ can add up to successful careers or hobbies that nurture and create a

happier lifetime experience.

a. capitalizing on strengths b. spending more time in the greenhouse c. patiently waiting for the phone to ring d. downplaying plant knowledge

Trades & Technology

Requirements in 517.40(C) through 517.44 do not apply to freestanding buildings used as nursing homes and limited care facilities, provided that ____.

A. no electrical equipment for patient care is provided B. no surgical treatment requiring general anesthesia is offered C. no back-up battery power is required D. no ambulance service is provided

Trades & Technology

What is used to protect FET switched headlamp and electric wiper circuits in a typical multiplex chassis?

A. virtual logic type 1 cycling B. virtual logic type 2 non-cycling C. SAE #1 cycling circuit breaker D. SAE #2 non-cycling circuit breaker

Trades & Technology

PVC solvent will normally work with:

A) Either PVC or CPVC pipe. B) Polybutylene pipe. C) PVC pipe only. D) CPVC pipe only.

Trades & Technology