Question

A dc armature carrying 1152 lap connected conductors each conductor carrying 12a rotates at 250 rpm. If the machine has 12 poles with a flux/pole of 0.075 wb, the power output of the armature will be

Answer 1

Assumptions in Terzaghi's Bearing Capacity Theory Depth of foundation is less than or equal to its width. Base of the footing is rough. Soil above bottom of foundation has no shear strength; is only a surcharge load against the overturning load Surcharge upto the base of footing is considered.