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Transformer losses refer to the energy dissipated in a transformer during its operation.
Transformer losses include copper losses and iron losses.
Copper losses occur due to the resistance of the transformer windings.
Iron losses, also known as core losses, occur due to hysteresis and eddy currents in the transformer core.
Copper losses can be minimized by using larger conductor sizes and reducing the resistance of winding...
Neutral is grounded in star connected transformer for safety and to limit voltage rise.
Grounding neutral limits voltage rise in case of unbalanced loads.
It provides a path for fault current to flow, which helps in detecting and isolating faults.
It reduces the risk of electric shock to personnel and damage to equipment.
In some countries, it is a legal requirement to ground the neutral in electrical systems.
Example: In a...
Power is the rate at which energy is transferred, while energy is the ability to do work.
Power is measured in watts, while energy is measured in joules.
Power is the rate at which energy is used or transferred, while energy is the capacity to do work.
A light bulb may have a power rating of 60 watts, but the energy it consumes over time is measured in watt-hours.
Energy can exist in different forms, such as kinetic, poten...
IGBT stands for Insulated Gate Bipolar Transistor, a power semiconductor device used for switching and amplification of electrical power.
IGBT is a three-terminal device with a collector, emitter, and gate.
It combines the advantages of MOSFET and BJT transistors.
It is commonly used in high power applications such as motor drives, power supplies, and renewable energy systems.
IGBTs have low on-state voltage drop and high ...
Relay is an electrically operated switch that uses an electromagnet to mechanically open or close a circuit.
Relays are used to control high voltage or high current circuits with low voltage signals.
They are commonly used in industrial automation, automotive applications, and household appliances.
Relays can be classified into different types based on their construction and operation, such as electromagnetic relays, soli...
CT and PT are connected in circuit to measure current and voltage respectively.
CT is connected in series with the load to measure current
PT is connected in parallel with the load to measure voltage
CT and PT are used together to measure power in a circuit
The ratio of CT and PT is important for accurate measurement
Solar PV modules convert sunlight into electricity using photovoltaic effect.
Solar PV modules consist of multiple solar cells connected in series and parallel.
Each solar cell is made of semiconductor material, usually silicon.
When sunlight hits the solar cell, it excites the electrons in the semiconductor material, creating a flow of electricity.
The electricity generated by the solar cells is direct current (DC), which...
In Star connection, line voltage is equal to the square root of 3 times phase voltage.
Line voltage is the voltage between any two line conductors in a three-phase system.
Phase voltage is the voltage between any line conductor and the neutral point in a three-phase system.
In a Star connection, all three phases are connected to a common neutral point.
The relationship between line voltage and phase voltage in Star connect...
Late selection process in company may be due to various reasons such as high volume of applicants, lack of resources, or inefficient recruitment procedures.
High volume of applicants leading to delays in reviewing and selecting candidates
Lack of resources such as manpower or technology to efficiently process applications
Inefficient recruitment procedures causing delays in decision-making
Internal delays in decision-makin...
I applied via Recruitment Consulltant and was interviewed in Sep 2024. There was 1 interview round.
Pump head loss calculation parameters include friction loss, elevation change, velocity head, and fittings.
Friction loss due to pipe roughness
Elevation change between inlet and outlet
Velocity head due to fluid velocity
Losses from fittings like elbows, tees, and valves
AHU components refer to the various parts of an Air Handling Unit that work together to regulate and circulate air in a building.
Filters - to remove dust and particles from the air
Coils - for heating or cooling the air
Fans - to circulate the air
Dampers - to control the flow of air
Humidifiers/dehumidifiers - to adjust the humidity levels
Centrifugal blowers are commonly used in AHUs for their efficiency and ability to handle high volumes of air.
Centrifugal blowers are preferred for AHUs due to their ability to handle high volumes of air efficiently.
They are more energy efficient compared to other types of blowers.
Examples of centrifugal blowers commonly used in AHUs include forward curved, backward inclined, and airfoil designs.
Primary pump is the main pump responsible for the majority of the pumping work, while secondary pump is a backup pump used in case the primary pump fails.
Primary pump is the main pump in a system, while secondary pump is a backup pump.
Primary pump is responsible for the majority of the pumping work, while secondary pump is used only when needed.
Examples: In a heating system, the primary pump circulates hot water throug...
AHU valve connection refers to the connection of valves in an air handling unit for controlling the flow of air.
AHU valve connection is essential for regulating the flow of air in an air handling unit.
Valves are typically connected to the AHU ductwork to control the amount of air entering or exiting the unit.
Properly connected valves ensure efficient operation of the AHU system.
Examples of AHU valves include damper val
Chilled water pipe size requirements depend on flow rate, pressure drop, material, insulation, and system design.
Flow rate: Determine the required flow rate of chilled water in the system.
Pressure drop: Calculate the pressure drop to ensure efficient operation.
Material: Select appropriate pipe material based on temperature and pressure requirements.
Insulation: Insulate the pipes to prevent heat gain or loss.
System desi...
The chiller connection refers to the method by which a chiller unit is connected to a building's HVAC system.
Chiller connection typically involves piping to transport chilled water from the chiller to the building's air handling units.
The connection may also include electrical wiring for power supply and control signals.
Proper chiller connection is crucial for efficient cooling and proper functioning of the HVAC system
I applied via Campus Placement and was interviewed in Oct 2024. There was 1 interview round.
Sterling & Wilson interview questions for popular designations
Get interview-ready with Top Sterling & Wilson Interview Questions
I applied via Company Website and was interviewed in Jul 2024. There were 3 interview rounds.
Is their has 30 min to solve 30 question
and topic has the check English , English Grammar
Check the code of Python and Data Science program
It also has 30 min and 30 Question
List is mutable, Tuple is immutable in Python.
List can be modified after creation, Tuple cannot be modified.
List is defined using square brackets [], Tuple is defined using parentheses ().
List is used for collections of items that may change, Tuple is used for fixed collections.
Example: list_example = [1, 2, 3], tuple_example = (4, 5, 6)
Yes, logistic regression can be used for multi class classification by using techniques like one-vs-rest or softmax.
Logistic regression is typically used for binary classification, but it can be extended to handle multiple classes.
One common approach is to use one-vs-rest (OvR) strategy, where a separate binary logistic regression model is trained for each class.
Another approach is to use softmax regression, which is a...
Built-in data refers to pre-existing datasets or information that is already included in a software or system.
Built-in data is typically provided by the software or system for analysis or processing.
Examples include sample datasets in statistical software like R or Python libraries like scikit-learn.
Built-in data can also refer to default datasets in databases or data warehouses.
It can save time and effort by providing
Decorators in Python are functions that modify the behavior of other functions.
Decorators are denoted by the @ symbol followed by the decorator name.
They are commonly used for logging, timing, authentication, etc.
Decorators can be used to add functionality to existing functions without modifying their code.
A lambda function is a small anonymous function defined without a name.
Lambda functions are used for creating small, one-time use functions.
They can take any number of arguments, but can only have one expression.
Lambda functions are often used in conjunction with higher-order functions like map, filter, and reduce.
Example: lambda x: x*2 defines a lambda function that doubles the input x.
I applied via Campus Placement and was interviewed in May 2024. There were 2 interview rounds.
Total enf for a certain conditions refers to the total energy consumption for specific circumstances.
Calculate the total energy consumption by summing up the individual energy consumption values for each condition.
Consider factors such as duration, power rating, and efficiency when calculating total energy consumption.
Example: Total energy consumption for a week of running a 100W light bulb for 8 hours a day.
I applied via Approached by Company and was interviewed in Jun 2024. There was 1 interview round.
Slump cone top diameter is the diameter of the top opening of a slump cone used to measure the consistency of concrete.
Slump cone top diameter is typically around 4 inches.
It is an important factor in determining the workability of concrete.
The slump cone test involves filling the cone with concrete, then lifting the cone to see how much the concrete slumps.
A larger top diameter of the slump cone indicates a higher wor
The M30 concrete compressive strength is typically around 30 MPa.
M30 concrete is a mix design with a characteristic compressive strength of 30 MPa.
It is commonly used in construction for various structural elements.
The strength of M30 concrete can vary based on factors like water-cement ratio, curing conditions, and quality of materials.
I applied via Company Website and was interviewed in Dec 2024. There was 1 interview round.
How to find the alteration in genes or a particular metabolic pathway of a cucumber plant upon treatment with a bio fertiliser
I applied via Recruitment Consulltant and was interviewed in Feb 2024. There was 1 interview round.
CAD is 2D design software while BIM is 3D modeling software with added information for building components.
CAD (Computer-Aided Design) is primarily used for 2D drafting and design.
BIM (Building Information Modeling) is used for 3D modeling with added information about building components such as materials, dimensions, and costs.
CAD focuses on individual drawings or components, while BIM allows for a more holistic view ...
Prepare an rvt family by creating a new family template, setting up parameters, adding necessary components, and testing for functionality.
Create a new family template in Revit
Set up parameters for the family
Add necessary components such as geometry, dimensions, and materials
Test the family for functionality within a project
Supporting BIM files on the construction site involves ensuring access, coordination, and utilization of the digital models for efficient project management.
Provide training to on-site staff on how to access and use BIM files
Ensure all stakeholders have access to the most updated BIM files
Coordinate with subcontractors to integrate their models into the overall BIM model
Use BIM for clash detection and coordination meet...
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