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A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by excess current.
A circuit breaker automatically interrupts the flow of electricity when it detects an overload or short circuit.
It can be reset manually after tripping to restore power to the circuit.
Common types include thermal-magnetic, magnetic, and thermal circuit breakers.
Examples include miniature circuit brea...
A star delta starter is a type of reduced voltage starter used to reduce the starting current of induction motors.
Consists of a star contactor and a delta contactor
Initially starts the motor in star configuration to reduce current
Switches to delta configuration once motor reaches a certain speed
Used for large induction motors to prevent high starting currents
Commonly used in industries like manufacturing and mining
A vacuum circuit breaker is an electrical switch that uses a vacuum to extinguish the arc when the circuit is broken.
Uses a vacuum to extinguish the arc
Commonly used in medium voltage applications
Compact and reliable design
Does not require any maintenance
Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction.
Transformers consist of two coils of wire, known as the primary and secondary coils.
They work on the principle of electromagnetic induction, where a changing current in the primary coil induces a voltage in the secondary coil.
Transformers are used to step up or step down voltage levels in e...
Diesel generators are backup power sources that use diesel fuel to generate electricity during power outages.
Diesel generators are commonly used in industrial settings, hospitals, data centers, and residential homes.
They are reliable and efficient sources of backup power.
Diesel generators require regular maintenance and fuel supply to ensure proper functioning.
Examples of diesel generator brands include Caterpillar, Cu
Untreatable power supply refers to a power source that cannot be fixed or repaired.
Untreatable power supply may be caused by irreparable damage to the power source components.
It may also refer to a power source that is obsolete and no longer supported by manufacturers.
In some cases, the cost of repairing the power supply may be higher than replacing it with a new one.
posted on 2 Dec 2024
I applied via Referral and was interviewed in Apr 2021. There were 4 interview rounds.
STP is a wastewater treatment plant that uses physical, chemical, and biological processes to remove pollutants from sewage.
STP receives sewage from households and industries through a network of underground pipes.
The sewage is screened to remove large objects and then sent to a grit chamber to remove sand and grit.
The sewage is then sent to a primary clarifier where solids settle to the bottom and are removed as sludg...
Transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
Transformers work on the principle of electromagnetic induction.
They consist of two or more coils of wire called windings.
The primary winding is connected to the input voltage source, while the secondary winding is connected to the load.
When an alternating current flows through the primary...
DG sets safety and operation are crucial for uninterrupted power supply.
DG sets should be installed in a well-ventilated area to avoid carbon monoxide poisoning.
Regular maintenance and testing of DG sets are necessary to ensure their safe operation.
Proper grounding and earthing of DG sets are essential to prevent electrical hazards.
Emergency stop buttons and alarms should be installed to shut down the DG sets in case o...
I applied via Referral and was interviewed before Jan 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed before Aug 2023. There was 1 interview round.
A shunt relay in an ACB is used to provide protection against overcurrents by diverting excess current away from the main circuit.
Shunt relay is connected in parallel with the main circuit of the ACB.
It detects overcurrents and activates to divert the excess current through a shunt path.
This helps in protecting the main circuit from damage due to overcurrents.
Shunt relays are commonly used in Air Circuit Breakers (ACBs...
CoC in HVAC stands for Certificate of Conformance, which is a document certifying that a product meets specified requirements.
CoC in HVAC is a Certificate of Conformance that ensures a product meets specific requirements.
It is often required in HVAC projects to ensure quality and compliance.
CoC may include details such as product specifications, testing results, and manufacturer information.
Biological oxygen demand (BOD) and Chemical oxygen demand (COD) are important parameters in wastewater treatment plants.
Biological oxygen demand (BOD) is a measure of the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in water.
Carbonaceous oxygen demand (COD) is a measure of the amount of oxygen required to oxidize all the organic and inorganic matter in water.
BOD is a ...
A voltage monitoring relay is a device that monitors voltage levels and triggers an alarm or protective action if the voltage exceeds or falls below a set threshold.
Monitors voltage levels in electrical systems
Triggers alarm or protective action if voltage exceeds or falls below set threshold
Used to protect equipment from damage due to voltage fluctuations
WTP plant works on the principle of physical and chemical processes to remove impurities from water.
Water enters the plant and goes through processes like coagulation, flocculation, sedimentation, filtration, and disinfection.
Coagulation involves adding chemicals to water to make impurities clump together.
Flocculation helps in forming larger particles called floc for easier removal.
Sedimentation allows the floc to sett...
I provide daily and monthly reports on project progress, issues, and key metrics to track performance.
Daily reports include updates on tasks completed, challenges faced, and plans for the next day.
Monthly reports summarize overall progress, budget status, and any potential risks or delays.
Reports may also include key performance indicators (KPIs) such as project milestones achieved, budget variance, and resource utiliz...
I applied via Referral
based on 1 interview
Interview experience
based on 3 reviews
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