List of top Electrical and Electronic Measurements Questions on Digital voltmeters and multi-meters

The open-loop transfer function of the system shown in the figure is: \[ G(s) = \frac{K s (s + 2)}{(s + 5)(s + 7)} \] For \( K \geq 0 \), which of the following real-axis points is on the root locus?

Using shunt capacitors, the power factor of a 3-phase, 4 kV induction motor (drawing 390 kVA at 0.77 pf lag) is to be improved to 0.85 pf lag. The line current of the capacitor bank in amperes, which is connected in parallel to the load is:

The op-amps in the following circuit are ideal. The voltage gain of the circuit is ……….. . (Round off to the nearest integer)