Secure Meters Electrical GET Interview Questions and Answers

Online aptitude test was easy. Questions were asked on electrical only.

Q1. Interview starts from basics of electrical. Questions were centered around generators and transformers. They test your basic electrical knowledge. No cross questioning and all direct questions
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Q2. Types of rotors in generators
Ans. 
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...read more
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Q3. What is star delta Starter
Ans. 
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
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Q4. What are the types of transformer losses
Ans. 
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...read more
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Q5. Working principle of generator
Ans. 
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...read more
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Q1. Stress strain curve
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Common aptitude questions are asked in first round

Q1. Self introductionp
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Q2. Project explanation
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Q1. Question from resume
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Q2. Question from your favourite subject
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Q1. Why do you want to join Siemens?
Ans. 
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.
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Q2. What are your strengths and weaknesses ?
Ans. 
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
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Q1. Difference between IDMT relay and transformer differential relay
Ans. 
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
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Q2. How solar energy in solar panels work
Ans. 
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
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Q1. Tell me about yourself
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Q1. Some basic coding questions
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Q2. What is joins type of joins
Ans. 
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
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Basics of electrical

Q1. Alternator principle,working, controlling the output. Power generation, relationship between active power and real power.
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Q1. Difference between 1 phase & 3 phase energy meter
Ans. 
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...read more
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Q2. What is the difference smart meter..
Ans. 
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...read more
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Q3. About u r self..
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Q4. What is Difference between ct meter & dt meter...
Ans. 
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...read more
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Q5. What is the SLD
Ans. 
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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