Hawkins Electrical Guide ...: Questions, Answers & Illustrations; a Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to Acquire a Working Knowledge of Electricity and Its Applications; a Practical Treatise, Issue 6
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adjustment air gap alternating current ammeter amperes apparatus armature arranged automatic auxiliary circuit break bus bars capacity cell choke coil circuit breaker circuit closing compensator connected consists contact arm current transformers curve cylinder delta switch designed device dial direct current disc discharge disconnecting Electric electrolyte energy exciter feeder field film frequency fuse ground high voltage horn gaps induction motor installed instrument insulated inverse time limit lever lightning arrester limit relay line current low voltage release magnet metal meter mounted multi-gap normal oil switch operation oscillograph overload circuit plate plunger position power factor primary protection Ques relay contacts reverse rheostat rotating screw secondary series resistance shaft short circuit shown in fig shunt resistance shunt trip single phase single pole solenoid spark gap synchronous condenser synchronous motor terminals three phase torque trip coil vibrator voltage regulator voltmeter volts wattless winding wire