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I applied via Walk-in and was interviewed before Jan 2023. There were 2 interview rounds.
Protection scheme in transmission and distribution substations ensures safety and reliability of the electrical system.
Protection scheme is a set of devices and systems designed to detect and isolate faults in the electrical system.
It includes various protective relays, circuit breakers, fuses, and other equipment.
The scheme operates based on principles of fault detection, fault isolation, and fault clearance.
Different...
Single line diagram shows electrical distribution system in simplified form. Circuit breaker schemes depict arrangement of circuit breakers in system.
Single line diagram is a simplified representation of electrical distribution system showing how various components are connected.
It includes power sources, loads, transformers, circuit breakers, etc. with lines indicating connections.
Circuit breaker schemes show arrangem...
CT, PT, and CVT are electrical equipment used in power systems for measurement and protection purposes.
CT stands for Current Transformer, which is used to measure and step down high currents to a safe level for measurement or protection devices.
PT stands for Potential Transformer, which is used to measure and step down high voltages to a safe level for measurement or protection devices.
CVT stands for Capacitive Voltage...
Different types of transformers used in substations include power transformers, distribution transformers, and instrument transformers.
Power transformers are used to step up or step down voltage for transmission and distribution purposes.
Distribution transformers are used to supply lower voltage to end users.
Instrument transformers include current transformers and voltage transformers used for metering and protection p...
Various tests are performed on transformers, CTs, and breakers to ensure their proper functioning and safety.
Insulation resistance test to check for any insulation breakdown
Turns ratio test to verify the turns ratio of the transformer
Polarity test to confirm correct polarity
CT ratio test to ensure the current ratio is accurate
Contact resistance test on breakers to check for any loose connections
Timing test on breakers
In case of an emergency in a substation, I would follow established safety protocols and procedures to ensure the safety of personnel and equipment.
Immediately notify the appropriate authorities and emergency services
Evacuate personnel from the affected area to a safe location
Isolate the affected equipment to prevent further damage
Implement contingency plans to maintain power supply if possible
Coordinate with relevant
I applied via Recruitment Consultant and was interviewed in Aug 2019. There were 4 interview rounds.
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posted on 7 Jan 2025
Pneumatic systems use compressed air to transmit power for various applications.
Compressed air is stored in a tank and released through valves to actuate cylinders or motors.
Pneumatic systems are commonly used in industries for automation, such as in manufacturing processes.
Examples include pneumatic drills, robotic arms, and air brakes in vehicles.
Sensors are devices that detect and respond to physical input from the environment.
Temperature sensors - detect changes in temperature
Pressure sensors - measure pressure changes
Motion sensors - detect movement
Proximity sensors - detect nearby objects
Light sensors - measure light intensity
MTTR stands for Mean Time To Repair, the average time taken to repair a failed component. MTBF stands for Mean Time Between Failures, the average time between failures of a component.
MTTR is the average time taken to repair a failed component.
MTBF is the average time between failures of a component.
MTTR = Total downtime / Number of failures
MTBF = Total uptime / Number of failures
Power factor is a measure of how effectively electrical power is being used in a circuit.
Power factor is the ratio of real power to apparent power in an electrical system.
It is important for efficient power transmission and distribution.
Power factor is maintained by using power factor correction devices like capacitors.
A power factor of 1 indicates all power is being used effectively, while a lower power factor means s...
posted on 12 Nov 2024
I applied via Approached by Company and was interviewed in Oct 2024. There was 1 interview round.
I am a recent graduate with a degree in engineering, eager to learn and grow in a professional setting.
Recent graduate with a degree in engineering
Eager to learn and grow in a professional setting
Strong problem-solving skills
Experience with relevant software/tools (mention specific ones if applicable)
Team player with good communication skills
based on 351 reviews
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