Refer to the motor controller shown on the last page of this esxam booklet for p

Question

Refer to the motor controller shown on the last page of this esxam booklet for proble Problem #2) Assuming that t e Power switch in tially in the opet the motor inthe reverse direction t for problems 2 through 4. ially in the "open" (off) position, state the exact set of Relanse Fees 7 Problem #3) Will the motor controller still operate in the exact same manner if the following change is made to the "B" contact's connection within each of the main supply lines yoår answer in the space below: Problem #4) Can the direction of the motor be changed while the motor is energized? Stateandjusti y your answer in the space below: LEss fet12 is t pressed be 7

Explanation / Answer

4) When the motor is energized even at that time we can change the direction by simply by checking the phase sequence and then changing it from A-B-C to A-C-B or any other combination due to which direction of the field will be changed to counterclockwise from clockwise or vice versa.

3)Even if the changes which are made in Que.3 the motor controller will operate in the same manner because energization in de-energization of contacts will follow the same sequence as that of the previous one and hence it will operate in same manner.

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