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Large DC motors with field windings instead of permanent magnets present a very heavy load when starting. To prevent fuses blowing, a series of ever smaller resistors are sequentially switched in series with the motor. As the motor picks up speed, a back EMF in opposition to the applied voltage limits the maximum current. When the motor reaches it's running speed the 'starter' is out of circuit.
What else can I help you with?
Why DC battery is required for generator?
The starter motor of a diesel generator is a DC motor. Depending on the size of the diesel engine the starter motor could be 12 volts or 24 volts. Sometimes more that one battery is used at the specific voltage. These batteries are connected in parallel to create more amp hour cranking power.
What dc motor uses a two point faceplate starter?
kn
What are components of a DC motor starter that can be affected by a high starting current if it is not limited?
armature
What are industrial applications of DC shunt motors?
Dc shunt motor is a constant flux and constant speed motor . So that it is used in centrifugal pumps ,machine tools ,blowers and fans etc.
Draw a schematic diagram of a 3 point starter showing various components internal connections and out going leads connected to a dc shunt motor?
A schematic diagram of a 3-point starter for a DC shunt motor includes a few key components: a starter handle, a series coil (or relay), and a shunt motor connection. The starter handle is connected to the series coil, which is in turn connected to the armature winding of the motor. The outgoing leads connect the motor's armature to the power supply, while the shunt field winding is connected to the power supply directly. The starter allows for a gradual increase in voltage and current to the motor, protecting it from inrush current during startup.
Why you use starter in DC motor?
to control on of operations
Why DC battery is required for generator?
The starter motor of a diesel generator is a DC motor. Depending on the size of the diesel engine the starter motor could be 12 volts or 24 volts. Sometimes more that one battery is used at the specific voltage. These batteries are connected in parallel to create more amp hour cranking power.
What dc motor uses a two point faceplate starter?
kn
How do you start a motor without a starter?
By the use of auto transformer and bridge rectifier we can start dc motor.
Why a DC motor starter is called 3 point starter?
Because it has three terminals L , F and A L - Line (connected to Supply) F - Field (connected to field of dc motor) A - Armature (connected to armature of DC motor) that's y it is called 3 point starter :)
Where do you find dc motors?
Examples of DC electric motors are the starter in your car and the motor in a DC controlled elevator, to name just two.
What are components of a DC motor starter that can be affected by a high starting current if it is not limited?
armature
What is three point dc shunt motor starter?
L , F and A L - Line (connected to Supply) F - Field (connected to field of dc motor) A - Armature (connected to armature of DC motor) that's y it is called 3 point
Why 3 point starter is called 3 point starter?
Because it has three terminals L , F and A L - Line (connected to Supply) F - Field (connected to field of dc motor) A - Armature (connected to armature of DC motor) that's y it is called 3 point starter :)
Why starter used in DC motors?
starter is used in dc motor to reduce the initial starting torque...so that the dc machine could be protected from damage.... ..and to avoid max ..current flowing ..from it it can damage whole ..moter structure
How do you start a DC motor if there is no 3 point starter?
By the use of auto transformer and bridge rectifier we can start dc motor.
Soft starter for a dc motor?
It is an advanced power electronic device to start the motor with a very smooth starting curve. It is next generation starter compared to DOL or star Delta starter
