- speed electromotive force
- 速率电动势
English-Chinese electricity dictionary (电气专业词典). 2013.
speed electromotive force
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Counter-electromotive force — The counter electromotive force also known as back electromotive force (abbreviated counter EMF, or CEMF)[1] is the voltage, or electromotive force, that pushes against the current which induces it. CEMF is caused by a changing electromagnetic… … Wikipedia
synchronous speed — noun : a definite speed for an alternating current machine that is dependent on the frequency of the supply circuit because the rotating member passes one pair of poles for each alternation of the alternating current * * * Elect. the speed at… … Useful english dictionary
Lorentz force — This article is about the equation governing the electromagnetic force. For a qualitative overview of the electromagnetic force, see Electromagnetism. For magnetic force of one magnet on another, see force between magnets. Electromagnetism … Wikipedia
Torque and speed of a DC motor — Torque of an electric motor is independent of speed. It is rather a function of flux and armature current.: N = frac{K(V IR)}{varphi} where: * N = number of turns * K = proportional constant * R = resistance of armature (ohms) * V = electromotive … Wikipedia
synchronous speed — /sɪŋkrənəs ˈspid/ (say singkruhnuhs speed) noun the speed at which an alternating current machine must operate to generate electromotive force at a given frequency …
synchronous speed — Elect. the speed at which an alternating current machine must operate to generate electromotive force at a given frequency. * * * … Universalium
electricity — /i lek tris i tee, ee lek /, n. 1. See electric charge. 2. See electric current. 3. the science dealing with electric charges and currents. 4. a state or feeling of excitement, anticipation, tension, etc. [1640 50; ELECTRIC + ITY] * * *… … Universalium
electromagnetism — /i lek troh mag ni tiz euhm/, n. 1. the phenomena associated with electric and magnetic fields and their interactions with each other and with electric charges and currents. 2. Also, electromagnetics. the science that deals with these phenomena.… … Universalium
History of electromagnetism — The history of electromagnetism, that is the human understanding and recorded use of electromagnetic forces, dates back over two thousand years ago, see Timeline of electromagnetism. The ancients must have been acquainted with the effects of… … Wikipedia
Conversion of units — is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors. Contents 1 Techniques 1.1 Process 1.2 Multiplication factors … Wikipedia
Maxwell's equations — For thermodynamic relations, see Maxwell relations. Electromagnetism … Wikipedia
