Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 38, Problem 4SQ
Why are capacitors connected into the power circuit?
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Electric Motor Control
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- In reference to the load, how are capacitors connected to help prevent voltage spikes and surges? Are capacitors connected in parallel or in series with the load?arrow_forwardThe varactor acts as a variable capacitor, explain with details?arrow_forwardIn reference to the load how are inductors connected to help prevent voltage spikes and surges?arrow_forward
- If the charging resistor was twice as large as the discharging resistor in Figure 4, theamplitudes of the charging and discharging waveforms would be ________.a. The sameb. Differentarrow_forwardwhat are standard impluse voltages, mention their values ?arrow_forwardDefine the term Capacitance and Inductance? Capacitance: It is the amount of charge that is stored inside a capacitor at a given voltage. Inductance: It is defined as the property of a coil to resist any changes in electric current flowing through it. Mutual inductance happens when a secondary coil opposes current change in the primary coil. Mention what is the difference between generator and alternator? Both generator and alternator work on the same principle they convert mechanical energy into electrical energy. Generator: It converts induced emf (Electro Motive Force) into direct current, where it based on stationary magnetic field and revolving conductor which rolls on the armatures with slip rings and brushes riding against each other. Alternator: It has rotating magnetic and stationary armature for high voltage and stationary magnetic field and a rotating armature for low voltagearrow_forward
- What is the advantage of alternating current over direct current?arrow_forwardElectrical Machine question.arrow_forwardA 150 – microfarad capacitor is connected to a 220 – volt, 60 – cycle source. Calculate (a) the capacitive reactance, (b) the current in the circuit, (c) the average power taken by the capacitor, and (d) the maximum power delivered to the capacitor. DRAW THE PHASOR DIAGRAM IF POSSIBLE. ROUND OFF TO FOUR DECIMAL PLACESarrow_forward
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