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Secure Meters
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I applied via Newspaper Ad and was interviewed before Apr 2023. There were 2 interview rounds.
Moderate apptiude level
MOSFET is a type of transistor that uses an electric field to control the flow of current.
MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor.
It has three terminals: gate, source, and drain.
The gate terminal controls the flow of current between the source and drain.
MOSFETs are commonly used in amplifiers, switches, and digital circuits.
They are known for their high input impedance and fast switching spe
General knowledge,30min , easy to medium
Quantitative,Qualitative ,1 hr , Medium
I was interviewed before Apr 2023.
Online aptitude test was easy. Questions were asked on electrical only.
Types of rotors in generators include salient pole rotor and cylindrical rotor.
Salient pole rotor has projecting poles with concentrated windings, used in low-speed applications.
Cylindrical rotor has distributed windings and is used in high-speed applications.
Other types include wound rotor and squirrel cage rotor.
Wound rotor has three-phase windings connected to slip rings, used in variable speed applications.
Squirrel...
Star delta starter is a type of reduced voltage starter used for starting high power motors.
Consists of two contactors - one for star connection and one for delta connection
Reduces starting current and torque on the motor
Commonly used in industrial applications for motors above 5 HP
Types of transformer losses include copper losses, iron losses, and stray losses.
Copper losses: Also known as I^2R losses, occur in the copper windings of the transformer due to resistance.
Iron losses: Also known as core losses, occur in the transformer core due to hysteresis and eddy currents.
Stray losses: Occur due to leakage flux and imperfect magnetic coupling between the windings.
Examples: An example of copper los...
A generator works on the principle of electromagnetic induction to convert mechanical energy into electrical energy.
Generators use a magnetic field and a conductor to create a flow of electrons, generating electricity.
When the conductor moves through the magnetic field, it induces a current in the conductor.
This current is then collected and transferred through wires to power electrical devices.
Examples of generators i...
Common aptitude questions are asked in first round
I applied via Campus Placement
I want to join Siemens because of its reputation for innovation, global presence, and opportunities for career growth.
Siemens is known for its cutting-edge technology and innovative solutions in the electrical industry.
I am impressed by Siemens' global presence and the opportunity to work on projects around the world.
I believe Siemens offers great opportunities for career growth and development in the electrical field.
My strengths include problem-solving skills and attention to detail. My weaknesses include public speaking and time management.
Strengths: problem-solving skills
Strengths: attention to detail
Weaknesses: public speaking
Weaknesses: time management
I applied via Campus Placement and was interviewed in Sep 2024. There was 1 interview round.
IDMT relay is used for overcurrent protection while transformer differential relay is used for differential protection.
IDMT relay operates based on inverse time-current characteristic curve
Transformer differential relay compares the currents entering and leaving the transformer windings
IDMT relay is used for protecting electrical equipment from overcurrents
Transformer differential relay is used for detecting internal f
Solar panels convert sunlight into electricity through photovoltaic cells.
Solar panels contain photovoltaic cells that convert sunlight into electricity
When sunlight hits the cells, it excites electrons, creating a flow of electricity
The electricity generated can be used to power homes, businesses, or stored in batteries for later use
posted on 13 Mar 2024
I applied via Walk-in and was interviewed before Mar 2023. There were 2 interview rounds.
Joins are used in databases to combine rows from two or more tables based on a related column between them.
Types of joins include inner join, outer join (left, right, full), cross join, and self join.
Inner join returns rows when there is at least one match in both tables.
Outer join returns all rows from one table and matching rows from the other table.
Cross join returns the Cartesian product of the two tables.
Self join
posted on 30 Jun 2022
I applied via Campus Placement and was interviewed in Dec 2021. There were 2 interview rounds.
Basics of electrical
I applied via Company Website and was interviewed in Nov 2022. There were 2 interview rounds.
1 phase energy meter measures power in single phase while 3 phase energy meter measures power in three phases.
1 phase energy meter is used for single phase loads like homes, small offices, etc.
3 phase energy meter is used for three phase loads like industrial motors, large factories, etc.
1 phase energy meter has two wires while 3 phase energy meter has four wires.
1 phase energy meter measures voltage, current, power fa...
Smart meters are advanced energy meters that record energy consumption in real-time and communicate it to the utility company.
Smart meters provide real-time energy consumption data to both the consumer and the utility company.
They can communicate wirelessly or through power lines.
Smart meters can help consumers save money by providing information on energy usage patterns.
They can also help utilities manage energy distr...
CT meter measures current while DT meter measures energy consumption.
CT meter measures the current flowing through a circuit while DT meter measures the energy consumption of a circuit over a period of time.
CT meter is used for protection and control purposes while DT meter is used for billing and energy management purposes.
CT meter is used in high voltage applications while DT meter is used in low voltage applications...
SLD stands for Single Line Diagram, a graphical representation of an electrical system.
It shows the flow of electricity in a system
It includes all the components of the system such as transformers, generators, breakers, etc.
It is used by engineers to design and analyze electrical systems
It is also used for maintenance and troubleshooting purposes
Example: SLD of a power plant or a building's electrical system
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Genus Power Infrastructures
Hpl Electric & Power
Crompton Greaves Consumer Electricals
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