Below is a critical speed map result from the dimensioned drawing of a two-pole induction motor. What can we say about the work of the motor design engineer?

Transcribed Image Text:

1000000 100000 Frequency (CPM) 10000 3600 RPM 1000 10 3 10 1 Enter 'E' to end 105 10^6 Equivalent Support Stiffness (lb/in) 1 3E4 (Ibin) 4E5 (lb/in) 10^7 1st Bending Mode 2nd Rigid Body Mode 1st Rigid Body Mode