EBK ELECTRICAL TRANSFORMERS AND ROTATIN
4th Edition
ISBN: 9781337025867
Author: Herman
Publisher: VST
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Chapter 13, Problem 1RQ
To determine
The frequency of the second harmonic.
Expert Solution & Answer
Explanation of Solution
The harmonics in an electrical system refers to the current and the voltage at a frequency is the multiple of fundamental power frequency. Harmonic currents are developed by the non-linear loads that are connected to the system. When the wave form of the current that comes out from the system is not same as the wave form of the supply voltage, the load is said to be non-linear.
The frequency of
The frequency of second harmonic is given by the relation.
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Which is the smallest bunch size that can be used?+_Sr/Fm =0,16Gr=0,71ơ=800·0.8=640 MPaAs=?Fmax= As·ơ·GrFs=ơs·AsFFm= Fs· GFSF =SF / FFm · FFm Fpreload =Fload / SF → Fload /3Fpreload per screw =Fload / SF → Fload /4As=Fpreload per screw /ơ·Gr → As= Fpreload per screw / 640· 0.71
The correct answer should be M12 with As=84.3mm²
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Chapter 13 Solutions
EBK ELECTRICAL TRANSFORMERS AND ROTATIN
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