List of top General Science Questions on AC Circuits

Which material is used to manufacture yoke of DC machines?

In a 4-band carbon composition resistor, the fourth band indicates:

The tendency of alternating current to concentrate near the surface of the overhead conductor is called:

The regulator of an electrical fan is wound with:

A soldering material is made up of copper and tin. If the material consists of 72% copper, then what will be the ratio of copper and tin in the material?

The equation of an alternating current is \(14\sin(1256t)\), determine the frequency.

When DC machine achieves maximum efficiency:

In DC generators, the graph between the potential difference at the terminal \(V\) and the load current \(I\), under the given conditions of excitation and speed is called:

A 20 \(\Omega\) resistance is connected across a supply of 400 V. If a resistance \(R\) is connected in parallel with the above 20 \(\Omega\) resistance, the current drawn from the supply gets doubled. The value of the unknown resistance \(R\) is:

In underground cables, the process of achieving uniformity in the dielectric stress by using layers of different dielectrics is known as:

The batteries reserved for emergency conditions are kept fully charged forever by employing: