Ganga Acrowools Interview Questions, Process, and Tips

A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers are used to increase or decrease voltage levels in electrical circuits.

• They consist of two coils of wire, known as the primary and secondary coils.

• The primary coil is connected to the input voltage source, while the secondary coil is connected to the output load.

• Transformers are essenti...read more

A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).

• Converts AC to DC

• Used in power supplies

• Types include half-wave, full-wave, and bridge rectifiers

Colour coding of resistance is a system used to identify the resistance value of a resistor based on its color bands.

• Resistors have color bands that represent different digits or multipliers.

• The first two bands indicate the first two digits of the resistance value, the third band indicates the multiplier, and the fourth band indicates the tolerance.

• For example, a resistor with bands of brown, black, red, and gold would...read more

A transistor is a semiconductor device used to amplify or switch electronic signals. There are two main types: bipolar junction transistors (BJTs) and field-effect transistors (FETs).

• Transistors are used in electronic devices to amplify or switch signals.

• BJTs have three layers of semiconductor material (NPN or PNP) while FETs have a gate, source, and drain.

• To check a transistor, you can use a multimeter in diode mode t...read more