The output voltage of a 440 volt, 60 hertz, AC generator is controlled by the

A．prime mover speed

B．exciter output voltage

C．load on the alternator

D．number of poles

[名词解释] 额定电压（rated voltage）

[单选题]（）的英语是voltage。A . 电压B . 电阻C . 电流D . 电器

[单选题]When voltage and current developed in an AC circuit reach their peak values at the same time, the power factor is _____.A．laggingB．leadingC．maximumD．minimum

[名词解释] 英译汉：voltage

[名词解释] 标称电压（nominal voltage）

[名词解释] 故障电压（fault voltage）

[主观题]What will be the output of the following C code?main(){int k, num= 30;k =(num > 5 ? (num <=10 ? 100:200): 500);printf("%d", k);}

[单选题]机床报警LaserH-Voltage not ready是（）A . 机床没回参考点B . 激光器没上高压C . 没开切割气体空气或氧气

[名词解释] 接触电压限值（touch voltage limit）

[单选题]英语INPUT/OUTPUT指（）A .电动的B .输入/输出C .电磁阀D .转换器