2007-01-10 08:17:25 · 2 answers · asked by lone wolf 1 in Science & Mathematics ➔ Engineering
What Jerry P said! In addition the inrush current of the frequently starting motor can reach several times the maintenance current of a larger motor. Depending on the duty cycle of the smaller motor, this could actually be much higher total power consumption than the larger motor. Then you can add in all the extra maintenance costs of replacing the smaller motors more frequently due to the heating up of the windings and the extra stress on shunt switches, commutators, etc. The heating of the windings will lead to insulation deterioration. Lot of factors involved here. Sure is a good question!
2007-01-10 08:32:07 · answer #1 · answered by Anonymous · 1⤊ 0⤋
1. The moving coefficient of friction is always less than the static (starting from a full stop) coefficient of friction.
2. The surface to volume ratio of moving parts tends to be smaller in larger motors, thus the proportional mass associated with parts encountering friction is less.
2007-01-10 16:25:46 · answer #2 · answered by Jerry P 6 · 1⤊ 0⤋