Asingle-phase motor vibrates at a fre¬quency of 100 hz. what is the fre¬quency of the power line? b. a capacitor-run motor does not have to be set in a resilient mounting. why? c. a 4-pole, 60 hz, single-phase hysteresis motor develops a torque of 6 in·lb when running at 1600 rpm. calculate the hysteresis loss per revolution [j].

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?