When there is a load, the main magnetic flux of the transformer is generated by ( ).
A: Primary current I1
B: Secondary current I2
C: Primary current I1 andSecondary current I2 together
D: Neither primary current I1 nor secondary currentI2
A: Primary current I1
B: Secondary current I2
C: Primary current I1 andSecondary current I2 together
D: Neither primary current I1 nor secondary currentI2
举一反三
- The no-load character of a 3-phase synchronous generator is the relationship between ( ). A: no-load emf Eo; exciting current If B: output<br/>voltage U; load current I C: output current I; exciting current If D: no-load<br/>emf Eo; load current I
- 以下程序的功能是交换两个指针变量所指向的变量的值。请填空。 main() { int i1=1,i2=2,*p1,*p2,i; （ ）; p2=&i2; i=*p1; （ ）; *p2=i; printf("i1=%d,i2=%d\n",i1,i2); }
- Find the current i1 and i2 in the circuit.[img=339x223]18039ab2999861f.jpg[/img]
- 在R1、R2的并联电路中，已知各电阻中的电流分别为I1、I2，则电路中的总电流应为（）。 A: I＝I1＝I2 B: I＝I1＋I2 C: I＝1／I1＋1／I2 D: I＝1／I1＝1／I2
- A nonlinear device Z has the i-v relationship shown below.This device is used in the circuit shown below, where "I" is the value of the current source.Assuming that \(I=$I1 A\), what is the value of the voltage \(v_o\) (in Volts)?Now assuming that \(I = $I2 A\), what is the value of the voltage \(v_o\) (in Volts)?<br/>______