[開課學院]: 資電學院
[開課系所]: 電機系
[課程名稱]: 電機機械
[老師名稱]: 張正泓 老師
[開課學期]: 98-2
[類型]: 98-2期中考2
因為老師改為考三次考試 沒有小考 這是第二次的考試 就歸類在期中考了
[1]How do you justify the rotor design of induction motor ?
[2]How does the shade-pole induction motor work ?
[3] (a) What kind of single-phase,squirrel-cage induction motor offers the
maximum torque?
(b)Sketch the torque-speed curve for the motor.
[4]A 110V,60 Hz,1 hp,single-phase induction motor operates at an efficiency of
0.68 and a power factor of 0.71.Find the stator input current.
[5]A single-phase,centrifugal switch-capacitor-strat,squirrel cage induction
motor has the parameters: Rm= 4.62ohms,Xm= 2.9ohms,Ra= 5.1ohms,Xa= 1.8ohms.For
the maximum starting torque ,calculate the required capacitor in micro-Farad.
[6]A three-phase, Y-connected, 220V,60 Hz, 6 pole induction motor has the
following parameters: R1= 0.294ohms,R'2= 0.144ohms,X1= 0.503ohms,X'2= 0.209ohms
Xm= 13.25ohms.The total losses are 600W.For a slip of 0.02,calculate the input
power of this motor.
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