Positive SSL
1 某三相、4極、220V、60Hz感應電動機,當靜止時其轉子之每相電阻為0.2 W,電抗為0.6 W,則該機產生最大轉矩時之轉速為多少rpm?
A 1400 rpm
B 1200 rpm
C 1000 rpm
D 800 rpm

Smax R2X2 0.20.6 = 1/3

n=(1- 13) × 120×604=1200rpm