motor control questions on experior
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bphgravity
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Re: motor control questions on experior
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
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
bphgravity
Senior Member
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- Florida
Re: motor control questions on experior
They aren't. This is basic wiring design and circuit theory. Not all exam questions will be dervided directly from the NEC.
They aren't. This is basic wiring design and circuit theory. Not all exam questions will be dervided directly from the NEC.
Re: motor control questions on experior
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?!?!
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?!?!
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