10+ Sterling Interview Questions and Answers

The diesel engine in the fire pump room starts automatically when there is a loss of power.

• The diesel engine starts when there is a power outage to ensure continuous operation of the fire pump.

• It is designed to kick in automatically to maintain water pressure in case of emergencies.

• Regular maintenance and testing of the diesel engine is crucial to ensure it functions properly during emergencies.

Fire fighting pump in auto works by drawing water from a source and pressurizing it to create a high-pressure stream for firefighting purposes.

• The pump draws water from a source such as a tank or hydrant using an intake valve.

• The water is then pressurized by the pump to create a high-pressure stream that can be used to extinguish fires.

• The pump may be powered by the vehicle's engine or by a separate power source.

• Some fire fighting pumps in autos may also have features such as...read more

A fire exhaust system works by removing smoke, heat, and gases from a building to prevent the spread of fire and protect occupants.

• The system typically includes exhaust fans, ductwork, and dampers to control airflow.

• Smoke detectors trigger the system to start operating when a fire is detected.

• The system helps maintain a safe environment for occupants and allows firefighters to access the building more easily.

The fire alarm system is activated when smoke or heat is detected, or manually by pulling the fire alarm switch.

• Activated automatically when smoke or heat is detected

• Activated manually by pulling the fire alarm switch

• May also be activated by a centralized control panel

Before placing a power transformer on foundation, we need to check several things.

• Check the transformer's weight and ensure that the foundation can support it

• Inspect the transformer for any damage during transportation

• Check the oil level and quality

• Verify the electrical connections and grounding

• Ensure that the transformer is properly aligned on the foundation

• Perform insulation resistance tests

• Check the cooling system

• Verify that all safety devices are in place and functioning ...read more

We have used SS 316L material in piping construction.

• SS 316L is a commonly used material in piping construction due to its high corrosion resistance.

• It is also known for its high strength and durability.

• SS 316L is often used in industries such as pharmaceuticals, food and beverage, and chemical processing.

• Other SS materials that may be used in piping construction include SS 304 and SS 321.

The grade of material used in structural construction depends on the type of structure and its intended use.

• The most commonly used grades of steel in structural construction are S275 and S355.

• For high-rise buildings and bridges, higher grades of steel such as S460 are used.

• Concrete is also commonly used in structural construction, with grades ranging from C20 to C50 depending on the strength required.

• Timber is another material used in structural construction, with grades rang...read more

We have constructed a 220 kV outdoor substation.

• The substation is designed to receive power from the transmission grid and distribute it to the local distribution network.

• It includes transformers, circuit breakers, disconnect switches, and other equipment.

• The substation is located in an open area and is designed to withstand harsh weather conditions.

• We followed all safety regulations and guidelines during the construction process.

• The substation was commissioned and tested bef...read more

Yes, I am able to handle multiple tasks on a daily basis by prioritizing, delegating, and staying organized.

• Prioritize tasks based on deadlines and importance

• Delegate tasks to team members when necessary

• Stay organized with to-do lists and calendars

• Example: Juggling multiple projects simultaneously while meeting deadlines

Auguring for earth pit involves drilling a hole in the ground to create a space for the earth pit.

• Auguring is a process of drilling a hole using an auger machine.

• The size of the hole depends on the requirements of the earth pit.

• The depth of the hole is usually determined by the type of soil and the purpose of the earth pit.

• After auguring, the earth pit is usually filled with a mixture of salt and charcoal to improve conductivity.

SLD stands for Single Line Diagram. It is a simplified representation of an electrical power system.

• SLD is a graphical representation of the electrical system, showing the flow of power and the components involved.

• It uses standardized symbols to represent various electrical devices such as transformers, generators, circuit breakers, etc.

• SLD helps in understanding the overall structure and connectivity of the electrical system.

• It is commonly used by engineers, technicians, and...read more

To assemble a transformer step by step, first prepare the core, wind the coils, connect the coils, insulate the coils, and finally enclose the transformer in a casing.

• Prepare the core by stacking and aligning the laminated steel sheets.

• Wind the primary and secondary coils around the core, ensuring proper insulation between the layers.

• Connect the coils to the appropriate terminals, ensuring correct polarity.

• Insulate the coils with insulating material such as varnish or tape to...read more

I have experience working with cloud warehouses such as Amazon Redshift and Google BigQuery.

• Utilized Amazon Redshift to store and analyze large datasets for a retail company

• Implemented ETL processes in Google BigQuery to transform and load data for a marketing campaign analysis

• Optimized queries in Snowflake to improve performance for a financial services client

Partitioning is the process of dividing a large dataset into smaller, more manageable parts based on certain criteria.

• Partitioning helps in improving query performance by reducing the amount of data that needs to be processed.

• It can be done based on ranges, hash values, or specific columns in the dataset.

• For example, partitioning a sales dataset by date can help in quickly retrieving sales data for a specific time period.

True. DG (Diesel Generator) and HVAC (Heating, Ventilation, and Air Conditioning) systems have different working principles.

• DG works by converting diesel fuel into mechanical energy, which is then converted into electrical energy.

• HVAC systems control the temperature, humidity, and air quality in a building by using principles of thermodynamics and fluid mechanics.

• DG systems are commonly used as backup power sources in case of electrical grid failures.

• HVAC systems can use vari...read more

Slab casting is important for creating a strong and durable foundation for buildings.

• Provides a flat and level surface for the building structure

• Helps distribute the load evenly across the foundation

• Prevents cracks and settlement in the building

• Allows for easy installation of utilities such as plumbing and electrical systems

Sfd & Bmd diagrams show the variation of shear force and bending moment along the length of a beam.

• SFD (Shear Force Diagram) shows the variation of shear force along the length of a beam.

• BMD (Bending Moment Diagram) shows the variation of bending moment along the length of a beam.

• SFD is obtained by integrating the distributed load on the beam.

• BMD is obtained by integrating the shear force diagram.