Question: An impact test on a vertical motor and pump head identifies two separate, cleanly defined natural frequencies (see below), one lower than the other. What

An impact test on a vertical motor and pump head identifies two separate, cleanly defined natural frequencies (see below), one lower than the other. What is the most logical reason for this difference?

VELOCITY/1PS D 427 RPM 650 RPM FREQUENCY/CPM DYNA MBES CORPORATION P.D. Bax

VELOCITY/1PS D 427 RPM 650 RPM FREQUENCY/CPM DYNA MBES CORPORATION P.D. Bax Exton. Prana. 19341 (215) 647-8600

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