Basic Electrical Engineering (3110005)

BE | Semester-1   Winter-2019 | 11-01-2020

Q4) (b) 

Compare poly phase Induction Motor and single-phase Induction Motor.

Item 1-phase I.M. Poly-phase I.M.
Construction Simple Complex
Cost Economical Higher
Power Factor Poor Better
Torque Less Higher
Maintenance Low High
Starting Not-self starting Self-starting
Efficiency Low High
Starting torque Low High
Reliability Reliable for small power ratings Reliable for large power ratings
Starting capacitor Required Not-required
Applications Ceiling fan, A.C., Washing machine Sugarcane juice machine etc. Air compressor, Blower, Industrial fan etc.

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