The direction of rotation of a three-phase motor can be reversed by __________.

A. reconnecting L1 to L2, L2 to L3, and L3 to L1
B. disconnecting one of the leads and then reconnecting it after the motor is at full speed
C. reversing any two of the three line connections
D. all of the above


Answer: C

Trades & Technology

You might also like to view...

Blowby, which is exhaust gas that escapes past the rings during combustion, increases when the engine is hot.

Answer the following statement true (T) or false (F)

Trades & Technology

As the percentage of CO2 increases in the argon mixture, weld penetration ____________________.

Fill in the blank(s) with the appropriate word(s).

Trades & Technology

The baseplates at the bottoms of the columns are connected to the foundations at points A and D by bolts and may be assumed to act as pin supports. Joint B is rigid. At C where the bottom flange of the girder is bolted to a cap plate welded to the end of the column, the joint can be assumed to act as a hinge (it has no significant capacity to transmit moment). Compute the reactions at A and D.

Trades & Technology

Give the size of a section and specify how sections are numbered.

What will be an ideal response?

Trades & Technology