Question
Download Solution PDFFor speed control of DC shunt motor, flux can be varied by
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 3): (connecting a variable resistance in series with the shunt field winding)
Concept:
- For speed control of DC shunt motor, flux can be varied by connecting a variable resistance in series with the shunt field winding
- By increasing the resistance of the field rheostat, the shunt field current Ish can be reduced and hence the field flux. Thus, by the flux control method, the speed of a DC shunt can only be increased above the normal speed.
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