it will run in same direction because flux and armature current both will be changed wih plarity.
No,look at the connection diagram for Universal motor. The Field and the armature windings are connected in series. But, in induction motor, the rotor end terminals are sorted by a kind of rings.That is rotor is apart from the supply.
A DOL or direct on line starter works by connecting the motor terminals directly to the power supply when they are energized. A DOL starter is the simplest type of motor starter.
suitable winding and correct power supply
The the supply stays within +/- 5% of what the motor is rated for, you can do this.
It is very simple. Just interchange any two phase wires. i.e. Y and B ( or ) R and B ( or ) R and Y for example Stop the supply. keep R phase wire as it is and disconnect B phase wire and Y phase wire. Connect B phase wire to the Y phase motor stud and Y phase wire to the B phase motor stud. Now give the supply, now motor revolves in opposite direction to the earlier.
Then the motor will act as generator by principle
No.
it will not work.
No,look at the connection diagram for Universal motor. The Field and the armature windings are connected in series. But, in induction motor, the rotor end terminals are sorted by a kind of rings.That is rotor is apart from the supply.
A DOL or direct on line starter works by connecting the motor terminals directly to the power supply when they are energized. A DOL starter is the simplest type of motor starter.
That happens when the supply is turned off, and the motor runs down and stops.
suitable winding and correct power supply
If the motor is designed for 120V or 220V whatever the case, it will function properly.If it is a 12V motor and you supply 120V it will make a mess and you will probably get hurt from flying debris!
Yes they interchange
Terminals a1 and a2 are classed the "run windings" these are supplied by a constant supply from a suitable switched and isolatable supply. The remaining terminals z1 and z2 are the "start windings" and are initialy supplied with a supply to "kick start" the motor in a given direction, the wiring can be reversed to these windings to enable the motor to start in the opposite direction. The supply to the start windings should only be for a short period to enable the motor to rotate and then disengage by the means of a centrifugal switch or time lagged contactor. So 4 wires, 2 to the run winding and the other 2 to the start windings. Any help? lee
Normally there are six terminals (two terminals per winding in 3 phase system) for a motor. If you find 12 terminals, you need to read the motor name details or specifications to get more info. The motor could be with two different sets of winding (double speed motor)
short the rotor terminals.