SMEC Engineer Interview Questions and Answers

Q1. Use of shunt relay in acb.
Ans. 
A shunt relay in an ACB is used to provide protection against overcurrents by diverting excess current away from the main circuit.
• Shunt relay is connected in parallel with the main circuit of the ACB.

• It detects overcurrents and activates to divert the excess current through a shunt path.

• This helps in protecting the main circuit from damage due to overcurrents.

• Shunt relays are commonly used in Air Circuit Breakers (ACBs...read more
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Q2. What is coc in hvac.
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CoC in HVAC stands for Certificate of Conformance, which is a document certifying that a product meets specified requirements.
• CoC in HVAC is a Certificate of Conformance that ensures a product meets specific requirements.

• It is often required in HVAC projects to ensure quality and compliance.

• CoC may include details such as product specifications, testing results, and manufacturer information.
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Q3. What is Biological oxygen demand and Carbonic oxygen demand in STP Plant.
Ans. 
Biological oxygen demand (BOD) and Chemical oxygen demand (COD) are important parameters in wastewater treatment plants.
• Biological oxygen demand (BOD) is a measure of the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in water.

• Carbonaceous oxygen demand (COD) is a measure of the amount of oxygen required to oxidize all the organic and inorganic matter in water.

• BOD is a ...read more
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Q4. What is voltage monitoring relay.
Ans. 
A voltage monitoring relay is a device that monitors voltage levels and triggers an alarm or protective action if the voltage exceeds or falls below a set threshold.
• Monitors voltage levels in electrical systems

• Triggers alarm or protective action if voltage exceeds or falls below set threshold

• Used to protect equipment from damage due to voltage fluctuations
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Q5. Working principle of wtp plant.
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WTP plant works on the principle of physical and chemical processes to remove impurities from water.
• Water enters the plant and goes through processes like coagulation, flocculation, sedimentation, filtration, and disinfection.

• Coagulation involves adding chemicals to water to make impurities clump together.

• Flocculation helps in forming larger particles called floc for easier removal.

• Sedimentation allows the floc to sett...read more
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Q6. What is your daily and monthly Reports.
Ans. 
I provide daily and monthly reports on project progress, issues, and key metrics to track performance.
• Daily reports include updates on tasks completed, challenges faced, and plans for the next day.

• Monthly reports summarize overall progress, budget status, and any potential risks or delays.

• Reports may also include key performance indicators (KPIs) such as project milestones achieved, budget variance, and resource utiliz...read more
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Q1. LT Side Equipments
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Q1. Introduction & Salary
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Q1. Basic fundamentals of plumbing and fire fighting system.
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Q2. Fire pump room single line diagram and working.
Ans. 
A fire pump room single line diagram illustrates the components and flow of water in fire protection systems.
• Includes main components: fire pump, controller, water supply, and discharge piping.

• Fire pump types: centrifugal, positive displacement, each suited for different applications.

• Controller manages pump operation, ensuring automatic activation during fire alarms.

• Water supply sources: municipal water, tanks, or rese...read more
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Q3. Fire pump technical data sheet detail.
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Plumbing and fire fighting NBC code Standard etc.

Q1. Salary discussion.
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Q2. Why to join our organisation.
Ans. 
I am excited to join your organization for its innovative projects, collaborative culture, and commitment to professional growth.
• Innovative Projects: Your organization is known for cutting-edge technology, such as the recent AI-driven solutions that enhance user experience.

• Collaborative Culture: I appreciate the emphasis on teamwork, as seen in your recent cross-departmental project that improved product delivery times...read more
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Q1. What are your queries related to GIS operations?
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GIS operations involve the analysis and visualization of spatial data to support decision-making across various fields.
• Data Integration: GIS allows for the integration of various data types, such as satellite imagery and demographic data, to create comprehensive maps.

• Spatial Analysis: GIS can perform complex spatial analyses, such as calculating distances or identifying patterns, which can be used in urban planning.

• Geo...read more
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Q2. What are the testing procedures for transformers and relays?
Ans. 
Testing procedures for transformers and relays ensure reliability, safety, and performance in electrical systems.
• Insulation Resistance Testing: Measures the insulation resistance of windings to ensure safety and prevent failures, typically using a megohmmeter.

• Turns Ratio Testing: Compares the primary and secondary winding turns to verify transformer performance, ensuring correct voltage transformation.

• Power Factor Test...read more
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