Question

Three moving iron type voltmeters are connected as shown below. Voltmeter readings are $V,V_1$ and $V_2$ as indicated . The correct relation among the voltmeter readings is

• A. $V=\frac{V_1}{\sqrt{2}}+\frac{V_2}{\sqrt{2}}$
• B. $V=V_1+V_2$
• C. $V=V_1{V}_2$
• D. $V=V_2-V_1$

Answer 1

The correct option is D $V=V_2-V_1$

$V_1=-|j1\Omega |\times I$

$V_2=|j2\Omega |\times I$

$V=-j1\Omega \times I+j2\Omega \times I$

$\approx V_2-V_1$