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 (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 273
is used to measurevolts, amperes, or watts, and its operation depends on thereaction between two coils when the current to be measuredis passed through them. One of the coils is fixed and the othermovable. Ques. Describe the construction of a dynamometer. Ans. It consists, as shown in fig. 2,513,… … TERMINAL o Fig. 2.513.—Diagram of Siemens dynamometer. It consists of two coils on a common axisbut set in planes at right angles to each other in such a way that a torque is producedbetween the two coils which measures the product of their currents. This torque is meas-ured by twisting a spiral…
Electrical engineering
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