motor control questions on experior

[dia480]

Any one have any info for the type questions posed on the Experior exam in regards to motor contol

[bphgravity]

Most exam questions that I have seen on motor controls involve a drawing of a fairly basic motor control diagram.

The diagram will show all the contacts, overloads, relays, signal lights, switches, etc...

Each of these locations will be given a corresponding number. You will then be given a few questions regarding this drawing and the sequence of events for operation.

Here are a few non-diagram type common questions:

1. A "stop" switch will be wired in ______ with the control circuit?

a. series b. parallel c. multiwire d. the overload relays

2. What type of control circuit must be restarted in the event of an interrupted power source?

a. two-wire b. three-wire c. continuous d. reactor type

3. The term "NC" represents what type of switch or contact?

a. no contact b. nice coil c. never close d. normally closed

[pam]

Hi..Where in the code is the answersfor your first two questions? I have to admit I have little hands on with control devices.

thanks :eek:

[bphgravity]

They aren't. This is basic wiring design and circuit theory. Not all exam questions will be dervided directly from the NEC. :)

[nortiviv]

I was taught that the stop switch is PART of the control switch. So, how can it be wired in relation to it (i.e. part in relation to whole--is your arm connected to perp. or adjacent to your body)? This is a poorly worded question, imho. Or...maybe I look at the questions a little too deeply?!?!

[nortiviv]

I meant stop switch is part of control circuit. sorry.