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posted on 16 Aug 2021
posted on 14 Jan 2022
posted on 2 Apr 2022
I applied via Referral and was interviewed in Jan 2022. There were 4 interview rounds.
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A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
Transformers are used to increase or decrease the voltage in an electrical circuit.
They consist of two or more coils of wire, known as windings, that are wound around a core made of magnetic material.
The primary winding receives electrical energy from a power source, while the secondary ...
A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).
Rectifiers are commonly used in power supplies to convert AC voltage to DC voltage.
They are made up of diodes, which allow current to flow in only one direction.
Rectifiers can be half-wave or full-wave, depending on the number of diodes used.
Examples of rectifiers include bridge rectifiers, vacuum tube rectifiers, and soli
posted on 27 Jan 2024
I applied via Company Website and was interviewed before Jan 2023. There was 1 interview round.
The question is asking about the current of a unit.
The current of a unit refers to the amount of electric current flowing through a specific unit or device.
It is typically measured in amperes (A) or milliamperes (mA).
The current of a unit can vary depending on the specific device or circuit being discussed.
For example, the current of a unit could refer to the current flowing through a resistor, a transistor, or a motor...
Transformers are rated in KVA (kilovolt-amperes) to indicate their power capacity.
KVA stands for kilovolt-amperes, which is a unit of apparent power.
The KVA rating of a transformer indicates the maximum amount of power it can handle.
Transformers are available in various KVA ratings to suit different power requirements.
Higher KVA ratings indicate higher power capacity.
For example, a transformer with a 100 KVA rating can
Loop law, also known as Kirchhoff's voltage law, states that the sum of the voltages in any closed loop in a circuit is zero.
Loop law is a fundamental principle in electrical engineering.
It is also known as Kirchhoff's voltage law (KVL).
According to loop law, the algebraic sum of the potential differences (voltages) around any closed loop in a circuit is always zero.
It is based on the principle of conservation of energ...
posted on 11 Jun 2024
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
Consists of two coils of wire, known as primary and secondary coils
Primary coil receives electrical energy and creates a magnetic field
Magnetic field induces a voltage in the secondary coil, transferring energy
Used in power distribution, voltage regulation, and electrical isolation
posted on 18 Apr 2022
I applied via Walk-in and was interviewed before Apr 2021. There were 2 interview rounds.
A step-up transformer is used to increase the voltage in an electrical circuit.
Step-up transformers have more turns in the secondary coil than in the primary coil.
They work based on the principle of electromagnetic induction.
The primary coil is connected to a power source with a lower voltage, while the secondary coil is connected to the load.
The increased voltage in the secondary coil is proportional to the ratio of t...
The commissioning process of a PV solar plant involves testing, adjusting, and optimizing the system to ensure it is functioning properly.
Testing the electrical components and connections to ensure they are working correctly
Adjusting the system settings to maximize efficiency and output
Optimizing the performance of the solar panels to achieve the desired energy production
Checking for any potential issues or malfunction
Transformer types of testing include routine tests, type tests, and special tests to ensure proper functioning and safety.
Routine tests include insulation resistance, turns ratio, and polarity tests.
Type tests are conducted on a prototype to verify design parameters like temperature rise and short-circuit withstand.
Special tests may include impulse voltage, partial discharge, and noise level tests.
Testing ensures trans...
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