Adani Solar Electrical Technician Interview Questions and Answers

AC motor speed can be controlled using methods like voltage control, frequency control, and pole changing.

• Voltage control: Adjusting the voltage supplied to the motor to change its speed.

• Frequency control: Changing the frequency of the AC power supplied to the motor to control its speed.

• Pole changing: Altering the number of poles in the motor to adjust its speed.

• Using variable frequency drives (VFDs) for precise speed

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

• Commonly used in electronics and power transmission

• Examples: diode rectifier, silicon-controlled rectifier (SCR)

A DC machine is an electrical machine that converts direct current electrical power into mechanical power.

• Types of DC machines include DC generators and DC motors

• DC generators convert mechanical power into direct current electrical power

• DC motors convert direct current electrical power into mechanical power

• Examples of DC machines include permanent magnet DC motors and series wound DC motors

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

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

• The primary coil is connected to a power source, creating a magnetic field when current flows through it.

• This magnetic field induces a voltage in the secondary coil, transferring energy from the primary to the second...read more