A 6-pole, triplex-wave, dc generator has an armature winding placed in 20 slots with 6 conductors per slot. If the flux per pole is 0.648*10^6 Maxwells and the generated voltage is 46.656 V; calculate the speed of the machine in rpm.

On a average work day more than work place firs are reorted

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.