SPECTRUM ELECTRICAL INDUSTRIES Shift Engineer Interview Questions and Answers

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

• Consists of two coils of wire (primary and secondary) wrapped around a core

• Primary coil is connected to a power source, creating a magnetic field

• Magnetic field induces a voltage in the secondary coil, transferring energy

• Used in power distribution, voltage regulation, and isolation

• Examples include po...read more

Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to the resistance of the conductor.

• Ohm's Law is represented by the formula V = I * R, where V is voltage, I is current, and R is resistance.

• It helps in calculating the current flowing through a circuit when the voltage and resistance are known.

• It can also be used to determi...read more

A generator is a device that converts mechanical energy into electrical energy.

• Generates electricity by converting mechanical energy into electrical energy

• Commonly used in power plants, wind turbines, and portable generators

• Consists of a rotor, stator, and an external power source to create a magnetic field

Faraday's law of electromagnetic induction states that a change in magnetic field induces an electromotive force in a conductor.

• An electromotive force (emf) is induced in a conductor when there is a change in the magnetic field surrounding the conductor.

• The magnitude of the induced emf is directly proportional to the rate of change of the magnetic field.

• This law forms the basis for the operation of generators, transfor...read more