For a balanced three-phase △ -connected load, the average power absorbed by the load is P . Change the △ -connected load to Y-connected load, the power will :
举一反三
- For the of the phase compound excitation type AVR of a self-excited<br/>synchronous generator, the AC side of the rectifier is connected with<br/>capacitors delta connected. The function of these capacitor are ( <br/>). A: resistance-capacitance protection of rectifier B: compensate the generator terminal voltage change caused by the change<br/>of load current C: compensate the generator terminal voltage change due to load current<br/>phase change D: accelerated voltage built-up process
- Two electronic devices are connected in series. When the load device wants to get the maximum ( ), the impedance of that is the same as the output impedance of the source (front-stage) device. A: Current B: Voltage C: Resistance D: Electric power
- The power that an amplifier delivers to a load is equal to the difference between the power that the circuit draws from the power supply and the power that the circuit dissipates. ? 正确|错误
- 下列程序： Private Sub Form_Click () Dim load As Integer Load ＝ InputBox(″请输入一个整数″) fee ＝ Wei(load)－load Print fee，load End Sub Function Wei(load) If load < 20 Then Money ＝ load/2 Else Money ＝ 10 ＋ load End if Wei ＝ Money End Function 运行时从键盘为变量load提供的数据为20，输出结果是( )。
- 将燃油量的单位改为美制加仑。 A: Change the units for the fuel load to u.s. gallons. B: There is an amendment of the fuel load to S. gallons. C: Convert the fuel load to S. gallons.