The Braithwaite Burn & Jessop Construction Company Interview Questions and Answers

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
Ans. 
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
Ans. 
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
Ans. 
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 job safety analysis
Ans. 
Job safety analysis is a process of identifying potential hazards in a job task and implementing controls to mitigate risks.
• Involves breaking down a job task into steps

• Identifying potential hazards for each step

• Determining preventive measures to reduce risks

• Ensures workers are aware of safety procedures

• Examples: construction site JSA, manufacturing plant JSA
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Q2. What is hazard identification and risk assessment
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Hazard identification is the process of identifying potential sources of harm in the workplace, while risk assessment involves evaluating the likelihood and severity of those hazards.
• Hazard identification involves identifying potential sources of harm such as chemicals, machinery, or ergonomic factors.

• Risk assessment involves evaluating the likelihood and severity of harm from these hazards.

• The goal is to implement con...read more
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Q3. What is fire safety
Ans. 
Fire safety refers to measures taken to prevent and protect against the risks of fire.
• Fire safety includes having working smoke detectors in place.

• It also involves creating and practicing a fire escape plan.

• Proper storage and handling of flammable materials is crucial for fire safety.

• Regular maintenance of fire extinguishers and other fire safety equipment is important.

• Training employees on fire safety protocols is ess
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Q4. Accident investigation
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Q5. What is hazard site
Ans. 
A hazard site is a location where there is a potential risk of harm to people, property, or the environment.
• Hazard sites can include industrial facilities, chemical plants, nuclear power plants, and construction sites.

• These sites may contain hazardous materials, dangerous equipment, or unsafe conditions.

• Proper safety measures and protocols must be followed at hazard sites to prevent accidents and injuries.

• Examples of h...read more
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Q1. What is bar bending schedule
Ans. 
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
Ans. 
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
Ans. 
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
Ans. 
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
Ans. 
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. Whats LEL tell procedures
Ans. 
LEL stands for Lower Explosive Limit, which is the minimum concentration of a gas or vapor in air that will ignite if a source of ignition is present.
• LEL is used to determine the potential for a fire or explosion in a confined space.

• Procedures for LEL testing involve using gas detection equipment to measure the concentration of a specific gas in the air.

• If the LEL of a gas is exceeded, it indicates a potentially hazard...read more
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Q2. Tel us the control of confind
Ans. 
Control of confined spaces is essential for ensuring the safety of workers in potentially hazardous environments.
• Implementing a permit-to-work system to control access to confined spaces

• Conducting thorough risk assessments before entry

• Providing appropriate training for workers on confined space entry procedures

• Using gas detectors and ventilation systems to monitor and control atmospheric conditions

• Having a rescue plan
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Q1. How many grade of Bitumen ?
Ans. 
There are mainly four grades of bitumen commonly used in construction: VG-10, VG-20, VG-30, and VG-40.
• VG-10: Suitable for low-traffic roads

• VG-20: Suitable for medium-traffic roads

• VG-30: Suitable for high-traffic roads

• VG-40: Suitable for heavy-duty traffic areas like airports and container terminals
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Q2. What is the compressive strength of cement mortar cube 3 days
Ans. 
The compressive strength of cement mortar cube at 3 days is typically around 20-25 MPa.
• Compressive strength of cement mortar cube is an important parameter to assess its quality and durability

• The strength of cement mortar increases with age, so 3 days is an early testing point

• Typical compressive strength values for cement mortar cubes at 3 days range from 20-25 MPa
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Q1. Describe your previous role
Ans. 
Managed full-cycle recruitment process for various positions in a fast-paced tech company
• Led recruitment efforts for technical roles such as software engineers and data scientists

• Collaborated with hiring managers to understand hiring needs and develop job descriptions

• Sourced candidates through various channels including job boards, social media, and employee referrals

• Conducted phone screens, interviews, and assessments...read more
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Q1. It was more deep interview to understand the areas that I have worked .
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The test was about our basic core engineering concepts (Electrical and Electronics Engineering)

The Group Discussion topic was Dine in or take away

Q1. No questions asked
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Q1. Self introduction.
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Q1. What is earthwork
Ans. 
Earthwork refers to the process of moving, excavating, and compacting soil and rock to prepare the ground for construction.
• Earthwork involves activities such as excavation, grading, compaction, and backfilling.

• It is essential for creating a stable foundation for roads, buildings, and other structures.

• Earthwork also includes the removal of unwanted materials and the addition of necessary materials to achieve the desired...read more
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Q2. What is GSB wmm
Ans. 
GSB stands for Granular Sub Base and WMM stands for Wet Mix Macadam. GSB WMM is a type of road construction method using layers of granular materials.
• GSB is the layer of granular material placed on the subgrade of a road to provide a stable foundation.

• WMM is a mixture of aggregates, filler, and water laid on the GSB layer to form a strong base for the road.

• GSB WMM construction involves compacting each layer properly to...read more
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