NBCC Junior Engineer Interview Questions and Answers

Q1. Estimation and budget related
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Q1. Basic process follows while billing and budgeting
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Q1. Salary negotiations
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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.
Ans. 
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.
Ans. 
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. All related your experience
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Q1. Hr type question
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Q1. What is the thickness of motar used in brickwork (vertical/horizontal direction)
Ans. 
The thickness of mortar used in brickwork varies depending on the type of brickwork and the desired strength.
• The thickness of mortar in brickwork is typically between 10mm to 15mm.

• For load-bearing walls, the mortar thickness may be increased to 20mm.

• In some cases, thin-bed mortar systems are used, where the thickness can be as low as 3mm.

• The thickness of mortar can also vary based on the type of bricks used, such as cl
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Q2. Why bricks need to dry before starting the brick work
Ans. 
Bricks need to dry before starting the brick work to ensure proper bonding and prevent shrinkage.
• Drying bricks removes excess moisture, allowing them to harden and strengthen.

• Wet bricks can cause shrinkage and cracking during the drying process.

• Dry bricks provide better adhesion with mortar, resulting in a stronger and more durable structure.

• Moisture in bricks can lead to efflorescence, a white powdery deposit on the s...read more
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Q3. Types of tiles used in toilets and living area
Ans. 
There are different types of tiles used in toilets and living areas.
• Ceramic tiles are commonly used in both toilets and living areas.

• Porcelain tiles are also popular for their durability and water resistance.

• In toilets, anti-slip tiles are often used to prevent accidents.

• Living areas may have a variety of tiles like marble, granite, or vinyl.

• Tiles with different finishes like matte, glossy, or textured can be chosen ba
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Introduce yourself, Qualifications

Q1. Practical Questions
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Q2. Structural & BBS
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Q3. RCC Structure Process
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Q4. Blockwork Process
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Q5. Plastering Process
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Q1. Introduction, previous experience
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Q1. Past experience and rates
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Q1. What is tiling process
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Q2. As per work poliy and methods telling all the process
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