Dextra India Interview Questions and Answers

Quantitative reasoning

Q1. About yourself and past experiences.
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Q2. Managerial round
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Q3. About company information
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Q4. About yourself and extracurricular activities
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Q5. See yourself in the next 5 yrs
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Q1. TYPES OF STARTERS
Ans. 
Starters are devices used to start and control the speed of induction motors.
• Direct On-Line (DOL) starter: provides full voltage to the motor at start

• Star-Delta starter: reduces the starting current by initially connecting the motor in star configuration

• Auto-transformer starter: uses an auto-transformer to reduce the voltage during starting

• Soft starter: gradually increases the voltage to the motor to reduce starting cu...read more
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Q2. Types and methods of earthing
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Earthing is the process of connecting electrical systems to the ground to prevent electric shock and protect equipment.
• Types of earthing include plate earthing, pipe earthing, rod earthing, and strip earthing.

• Methods of earthing include neutral earthing, equipment earthing, and system earthing.

• Earthing is essential for safety in electrical systems to prevent electric shock and damage to equipment.

• Proper earthing ensure...read more
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Q3. Principle and types of TF
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TF stands for Transformer. It is a static device used to transfer electrical energy between two or more circuits through electromagnetic induction.
• Principle of TF involves Faraday's law of electromagnetic induction.

• Types of TF include step-up, step-down, isolation, auto-transformer, etc.

• TFs are used in power distribution, voltage regulation, impedance matching, etc.
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Q4. Starting current of dol starter
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The starting current of a DOL starter is typically 6-8 times the rated current of the motor.
• The Direct-On-Line (DOL) starter is used to start induction motors.

• The starting current of a DOL starter is usually 6-8 times the rated current of the motor.

• This high starting current can cause voltage drops and stress on the electrical system.
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Q5. How to choose the Ac cables
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Choose AC cables based on current rating, insulation material, and environmental conditions.
• Consider the current rating of the cable to ensure it can handle the load

• Choose the appropriate insulation material based on the application and environment

• Take into account environmental conditions such as temperature, moisture, and exposure to chemicals

• Select the right cable size to minimize voltage drop and power loss

• Ensure c...read more
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Q6. Basic electric questions like ohms law formula
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Q1. What is bar bending schedule
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Bar bending schedule is a document that provides details of reinforcement steel bars used in construction projects.
• It includes details such as bar mark, bar size, quantity, shape, and bending dimensions.

• Helps in estimating the quantity of steel required for construction.

• Ensures proper placement and bending of reinforcement bars as per design specifications.

• Used by contractors, engineers, and construction workers for re...read more
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Q2. 28 days concrete strength
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28 days concrete strength is the standard measure of concrete's compressive strength after 28 days of curing.
• 28 days concrete strength is the standard measure of concrete's compressive strength after 28 days of curing

• It is important for assessing the quality of concrete and its ability to support structural loads

• The strength of concrete typically continues to increase beyond 28 days, but 28 days is the standard testing
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Q3. Difference between mivan and conventional
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Mivan is a modern construction technique using aluminum formwork, while conventional construction involves traditional methods like brick and mortar.
• Mivan is faster and more efficient than conventional construction methods.

• Mivan requires skilled labor for installation of aluminum formwork.

• Conventional construction is more labor-intensive and time-consuming.

• Mivan provides better quality finishes compared to conventional...read more
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Q4. What is self leveling concrete
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Self leveling concrete is a type of concrete that has a high flow consistency and is used to create smooth and level surfaces.
• Self leveling concrete is designed to flow easily and settle into place without the need for troweling or leveling.

• It is commonly used to level uneven floors before installing flooring materials such as tile or carpet.

• Self leveling concrete can be applied in thicknesses ranging from a featheredg...read more
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Q5. How many days will take 1st Aluform mockup Concreting
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The 1st Aluform mockup concreting typically takes 1-2 days to complete.
• 1-2 days is the usual timeframe for 1st Aluform mockup concreting

• Factors such as weather conditions, size of the mockup, and availability of resources can affect the duration

• Proper planning and coordination can help expedite the process
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Q1. What is status of company
Ans. 
The company is currently in a stable financial position with ongoing projects and a strong reputation in the industry.
• Company has a strong financial position

• Ongoing projects are in progress

• Company has a good reputation in the industry
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Q2. What is job responsibilities
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Q3. What is employee growth
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Employee growth refers to the development and advancement of an individual within their career.
• Employee growth involves acquiring new skills and knowledge

• It includes taking on more responsibilities and challenges

• Career progression and promotions are indicators of employee growth
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Q4. What is action points at site level
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Action points at site level refer to specific tasks or activities that need to be completed on the construction site.
• Action points are typically identified during site inspections or progress meetings.

• They can include tasks such as resolving design issues, coordinating with subcontractors, or ensuring compliance with regulations.

• Examples of action points could be revising drawings to address conflicts, obtaining necess...read more
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Q5. Talking with politely with client
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Q6. Very day site round, observation point noted and review with team
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Q7. Communication with our team, project achievements as per client requirement
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Q8. Project target as per the P O terms
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Q9. Internal discussion with project team and vendor
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Q1. Introduction and Salary discussion
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Q1. Technical skills, relevant code and standard practice
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Q1. Whats LEL tell procedures
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Q2. Tel us the control of confind
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