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I applied via Job Portal and was interviewed in Oct 2024. There were 2 interview rounds.
I applied via Company Website and was interviewed in Apr 2024. There was 1 interview round.
PLC stands for Programmable Logic Controller, used in industrial automation to control machinery and processes.
PLC is a digital computer used for automation of electromechanical processes.
It uses a programmable memory to store instructions and specific functions.
PLCs are commonly used in manufacturing plants, assembly lines, and other industrial settings.
They can be programmed using ladder logic, function block diagram...
Different types of communication cables used in the electrical engineering industry include coaxial cables, twisted pair cables, and fiber optic cables.
Coaxial cables: used for high-frequency transmission and commonly used in cable television and computer networks.
Twisted pair cables: consists of pairs of insulated copper wires twisted together to reduce electromagnetic interference, commonly used in Ethernet networks.
...
Single mode fiber optic cable has a smaller core size and allows only one mode of light to propagate, while multimode fiber optic cable has a larger core size and allows multiple modes of light to propagate.
Single mode fiber optic cable has a core size of 8-10 microns, while multimode fiber optic cable has a core size of 50-62.5 microns.
Single mode fiber optic cable provides higher bandwidth and longer transmission dis...
Types of transformers include step-up, step-down, isolation, autotransformer, and distribution transformers.
Step-up transformer increases voltage output
Step-down transformer decreases voltage output
Isolation transformer provides electrical isolation between primary and secondary windings
Autotransformer has a single winding with multiple taps for different voltage levels
Distribution transformer is used to distribute pow
Protection system for transformers includes Buchholz relay, differential protection, overcurrent protection, and temperature monitoring.
Buchholz relay detects internal faults like gas accumulation or oil leakage
Differential protection compares currents entering and leaving the transformer to detect faults
Overcurrent protection safeguards against excessive current flow
Temperature monitoring ensures the transformer opera
Regular maintenance of transformers and motors is crucial for ensuring optimal performance and preventing breakdowns.
Regularly inspecting for signs of wear and tear
Checking and replacing worn out parts such as brushes and bearings
Testing insulation resistance
Cleaning and lubricating moving parts
Monitoring temperature and vibration levels
Following manufacturer's maintenance guidelines
Keeping records of maintenance activ
Differential protection of transformer ensures that any internal fault is quickly detected and isolated to prevent damage.
Differential protection compares the current entering and leaving the transformer windings. If there is a difference, it indicates a fault.
The relay used for differential protection operates when the difference in current exceeds a set threshold.
This protection scheme is effective in detecting inter...
Ten delta test is a method used to determine the phase relationship between the primary and secondary windings of a transformer.
Ten delta test involves injecting a low voltage signal into the primary winding and measuring the corresponding output in the secondary winding.
The test helps in identifying any phase shift or angular displacement between the primary and secondary windings.
It is important for ensuring the prop...
I applied via AmbitionBox and was interviewed in Aug 2024. There were 2 interview rounds.
I was interviewed in Oct 2024.
Vcb (Testing),ACB, battery, transformer, motor maintenance
I applied via Company Website and was interviewed in Jul 2023. There were 3 interview rounds.
Anithing example - Transformer, PLC, motors discuss
Basic appti ques were asked
Transformer types include step-up, step-down, isolation, autotransformer, and instrument transformer.
Step-up transformer increases voltage while decreasing current
Step-down transformer decreases voltage while increasing current
Isolation transformer separates primary and secondary windings
Autotransformer has a single winding with multiple taps for voltage adjustment
Instrument transformer is used for measuring current or
Motors are devices that convert electrical energy into mechanical energy. There are various types of motors.
DC motors: used in appliances, toys, and automobiles
AC motors: used in industrial machinery and household appliances
Stepper motors: used in robotics and automation
Servo motors: used in precision control applications
Brushless motors: used in drones and electric vehicles
posted on 17 Feb 2023
I applied via Campus Placement and was interviewed in Jun 2022. There were 3 interview rounds.
Home's law is a principle that states that the current flowing through a conductor is directly proportional to the voltage applied across it.
Home's law is also known as Ohm's law.
It is expressed as I = V/R, where I is the current, V is the voltage, and R is the resistance.
This law is fundamental to the study of electrical circuits and is used to calculate the behavior of circuits.
For example, if the voltage across a re...
The current unit is the ampere (A), which measures the flow of electric charge.
The unit of electric current is the ampere (A).
Current is the rate of flow of electric charge.
It is measured using an ammeter.
One ampere is equal to one coulomb of charge passing through a point in one second.
Voltage is the unit of measurement for electric potential difference.
Voltage is the force that pushes electric charges through a circuit.
It is measured in volts (V).
Voltage is essential for the operation of electrical devices.
Examples of voltage units include millivolts (mV), kilovolts (kV), and megavolts (MV).
Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it.
Ohm's law is expressed as V = I * R, where V is the voltage, I is the current, and R is the resistance.
The current symbol is represented by the letter 'I'.
Ohm's law is fundamental in understanding and analyzing electrical circuits.
Example: If a circuit has a voltage of 12 volts and a resistance of 4 o...
The two types of winding in electrical engineering are lap winding and wave winding.
Lap winding is used in DC machines and is characterized by multiple parallel paths for current flow.
Wave winding is used in AC machines and is characterized by a single path for current flow.
Lap winding provides high current capacity and low voltage output, while wave winding provides low current capacity and high voltage output.
In lap ...
The primary winding is the first coil in a transformer that receives electrical energy.
The primary winding is typically connected to the power source.
It is responsible for receiving and transmitting electrical energy to the secondary winding.
The number of turns in the primary winding determines the voltage ratio between the primary and secondary sides.
Primary windings are commonly found in transformers, induction motor
Electrical Engineer
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Tata Motors
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Maruti Suzuki
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