Bihar State Power Holding Company Electrical Technician Interview Questions and Answers

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

• Transformers work on the principle of electromagnetic induction.

• They consist of two or more coils of wire, known as windings, which are wound around a core made of magnetic material.

• The primary winding is connected to the input voltage source, while the secondary winding is connected to ...read more

I am seeking new challenges and growth opportunities in my career.

• Seeking new challenges and growth opportunities

• Looking for a change to broaden my skillset

• Interested in working with a new team and learning from their expertise

The fuse rating for a 22 kW motor depends on the starting current and the type of motor.

• The starting current of the motor should be considered when selecting the fuse rating.

• The type of motor (e.g. induction, synchronous) also affects the fuse rating.

• Consult the motor manufacturer's specifications or a qualified electrician for the appropriate fuse rating.

• A general rule of thumb is to use a fuse rating of 125% of the m

Star delta starter is used to reduce starting current and torque in induction motors.

• Reduces starting current and torque in induction motors

• Protects motor windings from damage

• Increases motor lifespan

• Used for high power motors

• Commonly used in industries such as oil and gas, mining, and manufacturing

The unit of vibration is Hertz (Hz).

• Vibration is a measure of the frequency of oscillation of a mechanical or electrical system.

• Hertz is the unit of frequency, defined as one cycle per second.

• Vibration can be measured using instruments such as accelerometers and vibrometers.

• Vibration is an important consideration in the design and maintenance of electrical systems.

• Examples of electrical systems that may experience vibr...read more