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Why will the rotor of a wound-rotor motor not turn if the rotor circuit is left open with no resistance connected to it?
Wiki User
∙ 12y ago
Because there is no current flowing in the rotor, and thus there is no magnetic field in the rotor, and thus there is no torque between the rotor and the field.
Wiki User
∙ 12y ago
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What are examples of a load in a circuit?
Any specific device that draws a current which is connected within the circuit is an example of a circuit load. That may be a resistance and a loudspeaker LED computer and induction motor or whatever which can withdraw the energy from the output.
What is the difference between continuity and resistance check?
Continuity is checking for a completed circuit including a short circuit. Checking resistance would be checking in ohms resistance of a circuit, motor windings or an open circuit.
If you have a DC passing through a circuit will the current decrease when you add a DC motor and if so by how much?
In the circuit where the DC motor is added, it was not specified whether the motor was added in series or in parallel to circuit elements. If it was added in series, it will increase circuit resistance and it will cause circuit current to go down. In parallel, the motor will reduce total circuit resistance, and circuit current will increase.
How do you change the speed of a motor in a circuit?
By varying the Resistance to the motor. These Devices are called RHEOSTAT'S
When a dc motor connected to ac circuit what will happened?
baaa boom
Why rotor contactor in external resistance of slipring motor connected in delta?
rotor contactor are used to cut the resistance in slip-ring motor connected through resistance box. resistance is proportional to torque. so by controlling rotor contactor resistance can be controlled and hence torque can be controlled. for more information check torque and speed characteristic of wound motor.
Why current is supplied to DC motor?
What supplies a dc motor is not current, but voltage. Current is what flows in the circuit formed by the dc motor and for the charge. That current varies according to the resistance of the circuit.
What type of motor is variable torque produced by varying the resistance of the secondary circuit?
Wound-Rotor
Why the rotor winding of a synchronous motor is usually connected to an external resistance during start up?
because at start the motor draws larger quantity of current and this may affected the rotor windings in order to limit current always resistance is connected.
What does a Y mean on a printed circuit board?
it means that it's star connected on the motor part
Why is the rotor winding of a synchronous motor connected to an external resistance during start up?
because at start the motor draws larger quantity of current and this may affected the rotor windings in order to limit current always resistance is connected.
What is a motor in a circuit?
A motor in a circuit is classed as the circuit's load.
