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I applied via Walk-in and was interviewed before Oct 2023. There was 1 interview round.
A transformer is an electrical 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 receives electrical input and creates a magnetic field
Magnetic field induces a voltage in the secondary coil, transferring energy
Used in power distribution, voltage regulation, and electrical isolatio
Buchholz relay is a protective device for oil-filled transformers and reactors.
Buchholz relay is used to detect and prevent incipient faults in oil-filled electrical equipment.
It operates based on the principle that gas is generated when a fault occurs in the transformer or reactor.
The gas accumulates in the relay and triggers an alarm or initiates a trip to isolate the equipment from the power source.
Commonly used in ...
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posted on 20 Jul 2020
I applied via Referral and was interviewed before Jul 2019. There was 1 interview round.
The type of transformer used in telecom tower sites is typically a step-down transformer.
Step-down transformers are used to reduce the high voltage from the power grid to a lower voltage suitable for telecom equipment.
These transformers are usually single-phase and have a power rating of a few kilovolt-amperes (kVA).
They are designed to provide a stable and reliable power supply to the telecom equipment at the tower si...
SMPS stands for Switched Mode Power Supply, which is an electronic power supply that uses a switching regulator to convert electrical power efficiently.
SMPS is commonly used in electronic devices such as computers, televisions, and mobile phones.
It uses a switching regulator to convert AC power to DC power.
SMPS is more efficient than traditional linear power supplies.
It can be designed to provide different output volta...
A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).
Rectifiers are commonly used in power supplies and electronic devices.
They typically consist of diodes that 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 solid-state r
PAC stands for Programmable Automation Controller, a type of industrial control system used for automation and monitoring.
PACs are similar to PLCs but have more advanced capabilities such as data processing and communication.
They are used in various industries including manufacturing, energy, and transportation.
PACs can be programmed using various languages such as ladder logic, structured text, and C++.
Examples of PAC...
PID controller is a feedback control mechanism used in engineering to regulate a system's output.
PID stands for Proportional-Integral-Derivative
It continuously calculates an error value as the difference between a desired setpoint and a measured process variable
It uses three control terms to adjust the output and bring the error to zero
It is widely used in industries such as manufacturing, robotics, and automation
Examp...
PLC stands for Programmable Logic Controller. It is a digital computer used for automation of electromechanical processes.
PLC is used to control industrial processes such as assembly lines, robotic devices, and packaging systems.
It uses a programmable memory to store instructions and execute them in a sequential manner.
PLC can communicate with other devices such as sensors, actuators, and human-machine interfaces.
It is...
posted on 10 Jul 2024
RDBMS stands for Relational Database Management System, a type of database management system that stores data in a structured format.
Organizes data into tables with rows and columns
Uses SQL for querying and managing data
Supports ACID properties for data consistency
Examples: MySQL, Oracle Database, SQL Server
posted on 21 Apr 2023
I applied via Walk-in and was interviewed before Apr 2022. There were 3 interview rounds.
It was basic level coding question. you can answer if you strong in basic level of java
It was a good easy level test and prior preparation is importanat
posted on 27 Jun 2021
I applied via Naukri.com and was interviewed in Nov 2023. There were 2 interview rounds.
3 questions, 1 group the anagram in the given string , 2. Generate the Fibonacci series 3. Sort the string based on length.
Java memory management, string pool, Java 8 features, multi threading, design patterns
Java memory management involves managing memory allocation for heap and stack. Heap is used for storing objects and is managed by garbage collector. Stack is used for method calls and local variables.
String pool is a special area in heap memory where String literals are stored to optimize memory usage. Strings with same values are sto...
SQL indexes are data structures that improve the speed of data retrieval operations by providing quick access to rows in a table.
SQL indexes are created on columns in a table to speed up SELECT queries.
When a query is executed, the SQL engine first checks if there is an index on the columns involved in the query.
If an index is present, the SQL engine uses it to quickly locate the rows that satisfy the query conditions.
...
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