Nagarjuna Construction Company QC Engineer Interview Questions and Answers

Q1. Previous experience
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Q1. 1. What is Concrete Mix Design?
Ans. 
Concrete mix design is the process of determining the proportions of cement, water, aggregates, and admixtures to produce concrete with desired properties.
• Concrete mix design involves selecting the appropriate materials and determining their proportions to achieve the desired strength, workability, and durability of the concrete.

• Factors such as the type of cement, aggregate gradation, water-cement ratio, and admixtures...read more
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Q2. What is the maximum Liquid Limit & Plasticity Index allowed in earth work in embankment/subgrade soil ?
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Liquid limit should not exceed 40% and Plasticity Index should not exceed 20% for earth work in embankment/subgrade soil.
• Liquid limit and Plasticity Index are important parameters to determine the suitability of soil for construction purposes.

• Higher values of Liquid limit and Plasticity Index indicate that the soil is more susceptible to deformation and settlement.

• For earth work in embankment/subgrade soil, the maximum...read more
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General aptitude and domain-specific questions.

Q1. Self introduction
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Q2. What are the steps in pcb design process.
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Q3. What is demux and mux?
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Q1. Motor type, Pump lowering, ESR piping etc.
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Q2. Solar Specification
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Q1. Notice period is negotiable
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Q2. 30%hike on current ctc
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General knowlegde, Basic Aptitude, Domain Technical MCQ

Genx vs Genz, Altitude and comparsion

Q1. Components of Transformer
Ans. 
Components of a transformer include core, windings, and insulation.
• Core: Provides a path for magnetic flux

• Windings: Primary and secondary coils for inducing voltage

• Insulation: Prevents short circuits and ensures safety
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Q2. Question based on series and parallel resistance
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Q1. Specifiacation of machinery
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Specification of machinery refers to the detailed requirements and characteristics of a machine or equipment.
• Includes dimensions, materials, performance criteria, and safety features

• Should be clearly defined to ensure proper design and functionality

• Examples: maximum load capacity, operating temperature range, power consumption
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Q2. Schedule maintenance interval
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Q1. What are doing in metro project
Ans. 
I am responsible for ensuring quality control and quality assurance in the construction of the metro project.
• Conducting inspections and tests on materials used in construction

• Ensuring compliance with project specifications and standards

• Identifying and resolving any quality issues that may arise

• Collaborating with project managers and contractors to maintain quality standards
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Q2. You know about pre casting
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Pre casting is a construction method where concrete elements are cast in a different location before being transported to the construction site.
• Pre casting helps in ensuring quality control and reducing construction time on site.

• Examples include precast concrete panels, beams, and columns.

• It allows for better planning and coordination of construction activities.
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