Torrent Power Junior Engineer Electrical Interview Questions and Answers

Cables are used to transmit electrical signals or power between devices.

• Cables are made up of conductive materials, such as copper or aluminum.

• They come in various types, including coaxial, twisted pair, and fiber optic cables.

• Cables are used in a wide range of applications, such as telecommunications, computer networking, and power distribution.

• They can be categorized based on their voltage rating, insulation material...read more

The Betz limit is the maximum amount of energy that can be extracted from a wind turbine, which is 59.3% of the total kinetic energy of the wind.

• The Betz limit was derived by German physicist Albert Betz in 1919.

• It states that no wind turbine can capture more than 59.3% of the kinetic energy in the wind.

• This limit is based on the conservation of mass and momentum principles.

• The Betz limit is important in wind energy en...read more

Yes, I am familiar with AutoCAD.

• I have experience using AutoCAD for electrical design and drafting.

• I am proficient in creating and modifying electrical schematics and layouts using AutoCAD.

• I have used AutoCAD to generate 2D and 3D models of electrical components and systems.

• I am familiar with AutoCAD's tools and commands specific to electrical engineering.

• I have successfully completed projects using AutoCAD in my previ

Transformers work on the principle of electromagnetic induction. Mineral oil is commonly used in transformers. If oil is not added, the transformer may overheat and fail.

• Transformers work on the principle of electromagnetic induction

• Mineral oil is commonly used in transformers to provide insulation and cooling

• If oil is not added, the transformer may overheat and fail

To start a DC motor, apply a voltage to the motor terminals.

• Connect the positive terminal of the power supply to the motor's positive terminal.

• Connect the negative terminal of the power supply to the motor's negative terminal.

• Gradually increase the voltage to avoid sudden jerks or damage to the motor.

• Ensure the motor is properly lubricated and free from any mechanical obstructions before starting.

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 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