20+ Fidelity International Interview Questions and Answers

Answers to questions related to civil engineering interview.

• Contraction joints are used to prevent cracking due to shrinkage, while expansion joints allow for the expansion and contraction of concrete.

• Curing is necessary after concreteing to prevent moisture loss, maintain proper hydration, and enhance the strength and durability of the concrete.

• M20 grade of concrete refers to the mix ratio of cement, sand, and aggregate used in the concrete mix.

• Scaffolding is a temporary str...read more

There are three types of cooling towers: natural draught, forced draught, and induced draught.

• Natural draught cooling towers use the natural convection of air to cool water.

• Forced draught cooling towers use fans to force air through the tower.

• Induced draught cooling towers use fans to draw air through the tower.

• The choice of cooling tower type depends on factors such as the size of the plant, the cooling requirements, and the local climate.

• Cooling towers are commonly used in ...read more

Supercritical stage of steam refers to a state where it exhibits properties of both liquid and gas.

• Occurs at temperatures and pressures above the critical point

• Density and viscosity are similar to liquids, while diffusivity and compressibility are similar to gases

• No distinct boundary between liquid and gas phases

• Used in power plants for more efficient energy generation

The different parts of a lathe machine include the bed, headstock, tailstock, carriage, chuck, tool post, and feed mechanism.

• Bed: It is the base of the lathe machine that supports all the other components.

• Headstock: It houses the main spindle, gears, and controls the speed of rotation.

• Tailstock: It provides support to the other end of the workpiece and can be moved along the bed.

• Carriage: It holds the cutting tool and can move along the bed horizontally.

• Chuck: It holds the wo...read more

A chain design is primarily done by considering the desired function, load requirements, material selection, and manufacturing processes.

• Identify the purpose and function of the chain

• Determine the load requirements and calculate the necessary strength

• Select appropriate materials based on factors like strength, corrosion resistance, and cost

• Consider the manufacturing processes involved in producing the chain

• Design the chain geometry, including link shape, size, and spacing

• Perf...read more

Efficiency of a boiler can be increased by improving insulation, optimizing combustion, and regular maintenance.

• Improve insulation to reduce heat loss

• Optimize combustion by adjusting air-to-fuel ratio and using efficient burners

• Regular maintenance to clean and repair components

• Use economizers to recover waste heat

• Upgrade to high-efficiency boilers

• Implement energy management systems to monitor and control boiler operations

Subcritical units operate below critical pressure and temperature, while supercritical units operate above critical pressure and temperature.

• Subcritical units have lower efficiency and require more fuel compared to supercritical units.

• Supercritical units have higher steam pressure and temperature, resulting in better efficiency and lower emissions.

• Subcritical units are cheaper to build and maintain compared to supercritical units.

• Examples of subcritical units include 500 MW a...read more

Water temperature changes to steam in water separator.

• Water temperature decreases in water separator as steam is separated from it.

• The separated steam has a higher temperature than the remaining water.

• The temperature change depends on the pressure and flow rate of the water and steam.

• The water temperature may drop by 10-20 degrees Celsius in the separator.

• The steam temperature may increase by 10-20 degrees Celsius in the separator.

BHEL manufactures a wide range of products including power generation equipment, industrial motors, transformers, and more.

• Power generation equipment

• Industrial motors

• Transformers

• Boilers

• Turbines

To complete a project within time, effective planning, resource allocation, and monitoring are essential.

• Create a detailed project plan with clear milestones and deadlines

• Allocate resources efficiently and ensure they have the necessary skills

• Regularly monitor progress and identify any potential delays

• Implement strategies to mitigate risks and address any issues promptly

• Maintain open communication with the team and stakeholders

• Use project management tools and techniques to st...read more

Working at height safety is crucial to prevent falls and injuries.

• Ensure proper training and certification for workers

• Use appropriate fall protection equipment such as harnesses and guardrails

• Regularly inspect equipment and work areas for potential hazards

• Implement a rescue plan in case of emergencies

• Follow all relevant safety regulations and guidelines

• Provide adequate supervision and communication among workers

• Examples: scaffolding, ladders, roofs, elevated platforms

Cube test results are used to determine the compressive strength of concrete at 7 and 28 days.

• Cube test involves casting cubes of concrete and testing them under compression

• Results are reported in terms of compressive strength in MPa or psi

• 7-day results are used to determine early strength and 28-day results are used to determine ultimate strength

• Concrete with a compressive strength of at least 20 MPa is considered suitable for most construction purposes

Batch production is a manufacturing process where products are made in groups or batches, rather than individually.

• Products are produced in specified quantities at a time

• Each batch goes through the whole production process together

• Common in industries like food processing, pharmaceuticals, and automotive manufacturing

Collective bargaining is a process of negotiation between employers and employees, usually through their respective representatives, to determine the terms and conditions of employment.

• It involves a group of employees bargaining with their employer for better wages, benefits, and working conditions

• The process is usually facilitated by a union or other employee representative

• The goal is to reach a mutually beneficial agreement that satisfies both parties

• Collective bargaining i...read more

Hazards can be classified into physical, chemical, biological, ergonomic, and psychosocial.

• Physical hazards include noise, vibration, radiation, and temperature extremes.

• Chemical hazards include exposure to toxic substances like gases, liquids, and solids.

• Biological hazards include exposure to viruses, bacteria, fungi, and other microorganisms.

• Ergonomic hazards include repetitive motion, poor posture, and lifting heavy objects.

• Psychosocial hazards include stress, violence, an...read more

Concrete temperature refers to the temperature of freshly mixed concrete.

• Concrete temperature affects the setting time and strength development of concrete.

• It is important to control the temperature of concrete during mixing, transportation, and placement.

• High temperatures can accelerate the setting time and reduce workability, while low temperatures can slow down setting and strength gain.

• Concrete temperature is typically measured using a thermometer or temperature sensors.

• T...read more

Determining the useful life of fixed assets involves assessing factors such as wear and tear, technological advancements, and industry standards.

• Consider the physical condition of the asset and how it may deteriorate over time.

• Evaluate technological advancements that may render the asset obsolete sooner than expected.

• Research industry standards for similar assets to determine typical useful life spans.

• Consult with experts or conduct studies to gather data on the expected usef...read more

A multimeter is an electronic device used to measure voltage, current, and resistance in electrical circuits.

• It can measure AC and DC voltage

• It can measure AC and DC current

• It can measure resistance

• It can also measure other electrical parameters such as capacitance and frequency

• It typically has a digital display for easy reading

• Examples of multimeter brands include Fluke, Klein Tools, and Extech

GST forms are documents used for filing GST returns and claiming input tax credit.

• There are various GST forms for different purposes such as registration, returns, refunds, etc.

• Some of the commonly used GST forms are GSTR-1, GSTR-3B, GSTR-9, etc.

• GSTR-1 is used for filing outward supplies details, GSTR-3B is used for monthly summary returns, and GSTR-9 is used for annual returns.

• GST forms can be filed online through the GST portal.

• Proper filling of GST forms is important for c...read more

Precocious of water structure joint refers to the ability of a joint to withstand water pressure and prevent leakage.

• Water structure joints should be designed and constructed to be watertight.

• Various types of joints can be used in water structures, such as expansion joints, construction joints, and control joints.

• Proper sealing materials and techniques should be employed to ensure the integrity of the joints.

• Regular inspection and maintenance of water structure joints are nec...read more

Casting methods are processes used to create metal objects by pouring molten metal into a mold.

• Sand casting: uses sand molds to create the shape of the object

• Investment casting: uses wax patterns that are melted away to create the mold

• Die casting: uses metal molds to create complex shapes with high accuracy

• Permanent mold casting: uses reusable molds made of metal

• Centrifugal casting: rotates the mold to distribute the molten metal evenly

Good strength in civil engineering can be achieved through proper gating techniques.

• Use high-quality materials for construction

• Ensure proper mixing of concrete and other materials

• Follow proper curing techniques

• Use reinforcement bars and other strengthening methods

• Perform regular maintenance and inspections

• Consider factors such as load capacity and environmental conditions

• Use computer simulations and modeling to optimize strength

• Consult with experienced engineers and contracto...read more

Schedule III is a category of controlled substances with a moderate to low potential for abuse and dependence.

• Schedule III drugs require a prescription but have less strict regulations compared to Schedule I and II drugs.

• Examples of Schedule III substances include anabolic steroids, ketamine, and some codeine products.

• Prescriptions for Schedule III drugs can typically be refilled up to 5 times within a 6-month period.

Cooling towers are used to remove heat from a process by evaporating water.

• Natural draft cooling towers

• Mechanical draft cooling towers

• Crossflow cooling towers

• Counterflow cooling towers

Power plant cycle is a series of processes that convert fuel into electricity.

• Fuel is burned to produce heat

• Heat is used to boil water and create steam

• Steam turns a turbine which generates electricity

• Excess heat is released into the environment

• Water is cooled and recycled in the system

Knocking is an abnormal combustion phenomenon in internal combustion engines.

• Knocking occurs when the air-fuel mixture in the engine's cylinders ignites prematurely or unevenly.

• It produces a knocking or pinging sound, which can cause damage to the engine if not addressed.

• Factors contributing to knocking include low octane fuel, high engine temperatures, and incorrect ignition timing.

A trial balance is a list of all the general ledger accounts contained in the ledger of a business.

• It is used to ensure that the total debits equal the total credits in the accounting records.

• It is prepared at the end of an accounting period before the financial statements are prepared.

• Errors in the accounting records can be identified by checking the trial balance.

• Example: If the total debits in the trial balance do not equal the total credits, it indicates an error in the a...read more