Electric Motor Control
Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
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Chapter 55, Problem 3SQ
To determine

Write the action to be taken to prevent the excessive motor current when the frequency is reduced.

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you dont need to solve the question i just wanna know the steps and how to find the angle between the voltage difference and the current . thanks so much
istics of diodes, bipolar junction transistors, and plain the structure, operation, 1. The purpose of doping in semiconductor diodes is: a) To control their electrical properties b) To increase their physical size c) To enhance their mechanical strength d) To improve their thermal stability 2. In electronics production, your team wants to manufacture a very cheap diode rectifier. Which of the following rectifier configurations would you select? a) Half-wave rectifier c) Full-wave rectifier b) Bridge rectifier d) Controlled rectifier 3. The region that a Zener diode operates to provide voltage regulation is: a) Saturation c) Reverse bias b) Breakdown d) Forward bias 4. In NMOS transistors, the depth of the channel is primarily changed by: a) VDS b) lp c) VGS d) None of these 5. NMOS transistors have than PMOS, resulting in better current conduction: b) Long channel a) High mobility c) Low mobility d) Short channel 6. You are working in electronic production, and your team is asked to…
8.46 The generator circuit shown in Fig. P8.46 (on page 494) isconnected to a distant load via a long coaxial transmission line.The overall circuit can be modeled as in Fig. P8.46(b), in whichthe transmission line is represented by an equivalent impedanceZline = (5+ j2) W.(a) Determine the power factor of voltage source Vs.(b) Specify the capacitance of a shunt capacitor C that wouldraise the power factor of the source to unity when connectedbetween terminals (a,b). The source frequency is 1.5 kHz.
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