Question

The magnetization curve, and the field circuit resistance line are shown in figure. The machine is being run as a shunt generator. Assume residual voltage at 1500 rpm is 5 V. The value of field circuit resistance is ________\(\Omega\).

Field circuit resistance line \wngmmum curve at 1500 tpm Linear region of the 300 magnetization curve’ 

Answer 1

The correct option is A 150
$\text{The slope of the field circuit resistance line = field circuit resistance}$

$=\left(\frac{300}{2}\right)=150\Omega$