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I applied via Approached by Company and was interviewed before Feb 2023. There was 1 interview round.
I applied via Walk-in and was interviewed before May 2023. There was 1 interview round.
PM of motor & feeder refers to the preventive maintenance of both the motor and feeder systems.
Regularly inspect and clean motor components to prevent overheating and ensure proper functioning.
Check feeder connections for any loose or damaged wires that could cause electrical issues.
Schedule routine maintenance tasks such as lubricating moving parts and testing safety features.
Keep detailed records of maintenance activ...
VCB stands for Vacuum Circuit Breaker and ACB stands for Air Circuit Breaker. Both are types of circuit breakers used in electrical systems.
VCB uses vacuum as the arc quenching medium, while ACB uses air.
VCB is more reliable and requires less maintenance compared to ACB.
VCB is more suitable for medium voltage applications, while ACB is commonly used in low voltage applications.
VCB has a faster operation time compared t
Equipment used in motor feeder includes circuit breakers, contactors, overload relays, and motor starters.
Circuit breakers are used to protect the circuit from overloads and short circuits.
Contactors are used to control the flow of electricity to the motor.
Overload relays protect the motor from overheating by monitoring the current flow.
Motor starters combine the functions of a contactor and overload relay to start and...
Resistance and IR are required to limit the inrush current and prevent damage to the motor.
Resistance limits the initial current surge when starting the motor
Inrush current can be controlled by using a soft starter or a variable frequency drive
Insulation resistance (IR) is important to prevent short circuits and ensure safety
Proper sizing of resistors and monitoring IR can help in efficient motor operation
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
Transformers consist of two coils of wire, known as the primary and secondary coils.
The primary coil is connected to a power source, creating a magnetic field when current flows through it.
This magnetic field induces a voltage in the secondary coil, transferring electrical energy to the ...
I applied via Referral and was interviewed before Apr 2022. There were 3 interview rounds.
Excel Technical Services interview questions for popular designations
Mcb stands for Miniature Circuit Breaker, Rccb stands for Residual Current Circuit Breaker, and transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction.
Mcb is a type of circuit breaker that automatically switches off electrical circuits during abnormal conditions.
Rccb is a type of circuit breaker that detects and interrupts abnormal current flow...
Cable mergers are done to improve efficiency, expand service coverage, and enhance network reliability.
Cable mergers help companies streamline operations and reduce costs.
Merging cables allows for better utilization of resources and infrastructure.
By combining networks, cable companies can offer a wider range of services to customers.
Mergers also enable companies to invest in advanced technologies and infrastructure up...
There are several types of glands in the human body.
Endocrine glands secrete hormones directly into the bloodstream.
Exocrine glands secrete substances through ducts.
Examples of glands include the pituitary gland, sweat glands, and salivary glands.
Glands are used in electrical installations to provide a secure and watertight connection between cables and equipment.
Glands prevent the entry of dust, moisture, and other contaminants into electrical enclosures.
They ensure the safety of the electrical system by preventing short circuits and electrical shocks.
Glands also provide strain relief, protecting cables from damage caused by pulling or twisting.
Examples of gla...
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posted on 27 Jan 2025
Diesel Generator: A Reliable Power Source
A diesel generator is a self-contained power generating unit that combines a diesel engine with an electric generator (often an alternator). It's a versatile and widely used source of electricity, particularly in situations where a reliable power supply is crucial.
How Diesel Generators Work
* Diesel Engine: The diesel engine, fueled by diesel fuel, acts as the prime mover. It converts the chemical energy of the fuel into mechanical energy through combustion.
* Electric Generator: The mechanical energy from the engine is transferred to the generator, which converts it into electrical energy. This electrical energy can then be used to power various appliances and equipment.
Applications of Diesel Generators
* Backup Power: Diesel generators are commonly used as backup power sources for homes, businesses, hospitals, and critical infrastructure during power outages.
* Remote Locations: In areas with limited or no access to the grid, diesel generators provide a reliable source of electricity for various applications.
* Construction Sites: Diesel generators power tools and equipment on construction sites, ensuring work can continue even in remote locations.
* Off-Grid Living: Individuals living off the grid often rely on diesel generators for their electricity needs.
* Data Centers: Diesel generators provide backup power to ensure the continuous operation of critical data centers.
Advantages of Diesel Generators
* Reliability: Diesel engines are known for their durability and reliability, making them suitable for demanding applications.
* Fuel Efficiency: Modern diesel engines offer excellent fuel efficiency, reducing operating costs.
* Wide Power Range: Diesel generators are available in a wide range of sizes and power capacities, catering to various needs.
* Easy Maintenance: Diesel generators are relatively easy to maintain and service.
Disadvantages of Diesel Generators
* Noise: Diesel generators can be noisy, which may be a concern in certain settings.
posted on 25 Jan 2025
I was interviewed in Dec 2024.
posted on 24 Jan 2025
posted on 5 Dec 2024
I applied via campus placement at BRACT's Vishwakarma Institute of Information Technology, Pune and was interviewed in Nov 2024. There were 3 interview rounds.
Basic Aptitude Questions Reasoning & Verbal Ability
How is culture at IT Industries
Tensile forces are forces that stretch or pull materials apart.
Tensile forces act in the opposite direction of compressive forces
Examples of tensile forces include stretching a rubber band or pulling on a rope
Tensile strength is a measure of a material's ability to withstand tensile forces
Formulas in Fluid Mechanics
Bernoulli's equation: P + 0.5ρv^2 + ρgh = constant
Continuity equation: A1v1 = A2v2
Navier-Stokes equation: ρ(∂v/∂t + v∇v) = -∇P + μ∇^2v + ρg
Ideal gas law: PV = nRT
Poiseuille's Law: Q = πr^4(ΔP)/(8ηL)
The fundamental laws of thermodynamics govern the behavior of energy in systems.
First Law of Thermodynamics: Energy cannot be created or destroyed, only transferred or converted.
Second Law of Thermodynamics: The entropy of an isolated system will always increase over time.
Third Law of Thermodynamics: As temperature approaches absolute zero, the entropy of a system approaches a minimum value.
Examples: A car engine conve...
Fourier's Law describes the flow of heat through a material.
Fourier's Law states that the rate of heat transfer through a material is directly proportional to the negative gradient of temperature and the area perpendicular to the direction of heat flow.
The equation for Fourier's Law is q = -k * A * (dT/dx), where q is the heat transfer rate, k is the thermal conductivity of the material, A is the cross-sectional area, ...
The Iron-Carbon phase diagram illustrates the phases and microstructures of iron-carbon alloys as a function of temperature and composition.
Shows the phases of iron and carbon at different temperatures and compositions
Includes regions for austenite, ferrite, cementite, and pearlite
Critical points such as eutectic point and eutectoid point are marked
Used to predict the microstructure of steel based on composition and he
The stress-strain curve shows the relationship between stress (force applied) and strain (resulting deformation) in a material.
The curve typically consists of three main regions: elastic deformation, plastic deformation, and fracture.
In the elastic region, the material deforms elastically and returns to its original shape when the stress is removed.
The plastic region is where permanent deformation occurs, but the mater...
SFD and BMD are calculated using equations of equilibrium and relationships between load, shear force, and bending moment.
Calculate reactions at supports using equations of equilibrium
Determine the shear force at different points along the beam by considering the applied loads and reactions
Calculate the bending moment at different points by integrating the shear force diagram
Plot the SFD and BMD based on the calculated...
Velocity of fluid flowing through a pipe can be calculated using the formula Q = A * V, where Q is the flow rate, A is the cross-sectional area of the pipe, and V is the velocity of the fluid.
Calculate the cross-sectional area of the pipe using the formula A = π * r^2, where r is the radius of the pipe.
Determine the flow rate (Q) of the fluid, which is typically measured in cubic meters per second (m^3/s) or liters per...
Entropy is a measure of disorder or randomness in a system, while enthalpy is a measure of the heat energy in a system.
Entropy is a thermodynamic property that measures the amount of energy in a system that is not available to do work.
Enthalpy is a thermodynamic property that measures the total heat content of a system.
Entropy increases in irreversible processes, while enthalpy remains constant.
Entropy is denoted by S,...
The Refrigeration Cycle graph shows the process of cooling a space by transferring heat from inside to outside.
The cycle starts with the refrigerant entering the compressor as a low-pressure gas.
The refrigerant is compressed, raising its temperature and pressure, before entering the condenser where it releases heat to the surroundings.
After losing heat, the refrigerant becomes a high-pressure liquid and flows into the ...
The vapor absorption cycle graph shows the relationship between pressure, temperature, and enthalpy during the process.
The graph typically shows pressure on the y-axis and temperature on the x-axis.
It includes lines representing the various stages of the cycle such as evaporation, absorption, and desorption.
The enthalpy values at different points in the cycle can also be plotted on the graph.
Example: The graph will sho...
The Rankine, Otto, and Diesel cycle graphs are commonly used in thermodynamics to analyze different types of heat engines.
The Rankine cycle is used in steam power plants and consists of four processes: heat addition, isentropic expansion, heat rejection, and isentropic compression.
The Otto cycle is used in spark-ignition engines and consists of four processes: isentropic compression, constant volume heat addition, isen...
posted on 21 Dec 2024
I managed inventory of various items in the store, including working side areas.
Managed inventory of products and supplies
Organized and maintained stock levels
Handled incoming and outgoing shipments
Ensured proper storage and labeling of items
Performed regular inventory checks and audits
Interview experience
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