L.G.Balakrishnan & Bros Electrical Maintenance Engineer Interview Questions and Answers

Self Introduction and communication English

Q1. Transformer breaker related questions, AC/DC Motors starters, Hardware circuits and PLC logics relay consupt , injuction moulding related questions
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Q1. Intro yourself Qualifications Work detail
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Q1. What is a synchronisation panel for DG?
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A synchronisation panel for DG is used to synchronize multiple generators to ensure they are running in parallel and sharing the load evenly.
• Synchronisation panels are used in situations where multiple diesel generators need to be connected in parallel to supply power to a common bus.

• The panel monitors the frequency, voltage, and phase angle of each generator and ensures they are synchronized before connecting them to ...read more
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Q2. What is Pulse width in laser ?
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Pulse width in laser refers to the duration of time that a laser beam is emitted.
• Pulse width is measured in seconds or milliseconds.

• It determines the amount of energy delivered by the laser beam.

• Shorter pulse widths are often used for precision cutting or welding.

• Longer pulse widths are used for applications like material processing or drilling.
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Q3. What is BDV of Transformer oil?
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BDV stands for Breakdown Voltage. It is a measure of the dielectric strength of transformer oil.
• BDV is the voltage at which the insulation between two conductors breaks down.

• It is an important parameter to determine the quality of transformer oil.

• BDV is usually measured in kilovolts (kV).

• Higher BDV indicates better quality and higher dielectric strength of the oil.
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Q4. How RTCC panel works?
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RTCC panel stands for Remote Tap Changing Control panel, used in power transformers to automatically adjust the voltage ratio.
• RTCC panel monitors the load and voltage levels of the transformer.

• It automatically adjusts the tap changer to maintain the desired voltage ratio.

• RTCC panel can be programmed to operate based on specific parameters like load current, temperature, etc.

• It helps in optimizing the transformer perfor...read more
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Q1. About background , why you leave from previous company, why you want to join our company.
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Q1. PLC
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Q1. Mcb,acb,mpcb,contactor, relay
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Q2. Db distribution
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Q1. What's my salary.how many hours duty.my work in Electrical department
Ans. 
Salary and work hours for Maintenance Electrician vary depending on company and location.
• Salary for Maintenance Electrician can range from $40,000 to $70,000 per year.

• Typical work hours for Maintenance Electrician are 40 hours per week, but may vary based on workload.

• Maintenance Electricians work in the Electrical department, handling repairs and maintenance of electrical systems.

• Duties may include troubleshooting elec...read more
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Q1. What is mechanism in Hydraulic press
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The mechanism in a hydraulic press is the system of components that allows for the transmission of force through a fluid to generate a large amount of pressure.
• Hydraulic press uses a hydraulic cylinder to generate force.

• The force is transmitted through a fluid, typically oil or water.

• The mechanism includes valves, pumps, and pistons to control the flow of the fluid and generate pressure.

• The pressure created by the mech...read more
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Q2. What is the method of forging
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Forging is a manufacturing process involving the shaping of metal using localized compressive forces.
• Heating the metal to a high temperature to make it more malleable

• Applying compressive forces to shape the metal into the desired form

• Cooling the forged metal to strengthen it

• Types of forging include open-die forging, closed-die forging, and seamless rolled ring forging
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Q1. Press machine utility compressor
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Q1. Related to work and kpi
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Q2. Why want to leave
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Q3. Machine related conditional questions
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