Objective: obtain the speed control characteristics of a dc motor at no load.
Preview: The dc motors are in general much more adaptable speed drives than ac motors. The speed of dc motors depends upon the following relation. Since the speed is proportional to the ratio between the back EMF and the flux per pole. The back EMF can be varied by varying the armature applied voltage (called as armature control). The flux per pole can be varied by varying the field current (called field control).
Equipment Required: All the measuring instruments associated with each experiment are industrial grade. These instruments are housed in an elegant cabinet as a package. Range of instruments and accessories (standard format)
1. 2HP DC Motor 220V 2HP 1500rpm with standard screen protected/drip proof (IP21)
2. 3-4 Point DC starters with protectors.
3. Suitable Digital Voltmeter DC to measure voltage across armature
4. Suitable Digital Ammeter DC to measure filed current.
5. Suitable Digital Ammeter DC to measure armature current.
6. Suitable Digital Tachometer to read RPM of the motor.
7. Suitable Rheostat for Armature circuit.
8. Suitable Rheostat for field circuit.
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