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I applied via Naukri.com and was interviewed in Mar 2024. There was 1 interview round.
Capability curve of a generator shows the relationship between the electrical output and mechanical input of the generator.
The capability curve is a graph that shows the maximum electrical output a generator can produce at different mechanical input levels.
It helps in determining the operating limits of the generator and ensures it is not overloaded.
The curve typically shows the maximum power output, rated power output...
All protection of a generator is essential to ensure its safe and efficient operation.
Overcurrent protection to prevent damage from excessive current flow
Overvoltage protection to safeguard against voltage spikes
Underfrequency protection to prevent damage during frequency deviations
Reverse power protection to prevent generator from acting as a motor
Earth fault protection to detect ground faults and protect equipment
Tem...
I applied via Naukri.com and was interviewed before Mar 2020. There were 4 interview rounds.
Power plants generate electricity by converting various forms of energy into electrical energy.
Fuel is burned to produce heat, which is used to create steam.
The steam drives a turbine, which powers a generator to produce electricity.
Different types of power plants include coal-fired, natural gas-fired, nuclear, hydroelectric, and renewable energy sources.
Power plants require regular maintenance and monitoring to ensure
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I applied via Approached by Company and was interviewed before Apr 2021. There were 4 interview rounds.
This has two papers one technical and one non technical
Technical has only two subjects machines and power systems 100 ques 1 hour.
Non technical exam has 50 ques 1/2hour.
Questions related to electrical engineering concepts such as star delta connection, distribution transformer, color coding of conductor, earthing vs grounding, machine efficiency and stability.
Star delta connection is a method of starting three-phase induction motors.
Distribution transformer is used to step down high voltage to low voltage for distribution purposes.
Color coding of conductor is used to identify the func...
I applied via Campus Placement and was interviewed before Nov 2021. There were 2 interview rounds.
I applied via Other and was interviewed in Mar 2021. There were 5 interview rounds.
I applied via Naukri.com and was interviewed in Aug 2021. There were 3 interview rounds.
I applied via Company Website and was interviewed in Jun 2021. There were 3 interview rounds.
I applied via Company Website and was interviewed in Dec 2021. There were 4 interview rounds.
Various ways of distribution transformer protection include overcurrent protection, differential protection, and earth fault protection.
Overcurrent protection involves the use of fuses or circuit breakers to protect the transformer from excessive current.
Differential protection compares the current entering and leaving the transformer to detect any internal faults.
Earth fault protection detects any fault between the tr...
Buckley relay is a protective relay used in power systems to detect faults and prevent damage to equipment.
It is a type of directional overcurrent relay.
It operates based on the principle of phase comparison.
It is used to protect generators, transformers, and transmission lines.
It is named after its inventor, W. H. Buckley.
It is commonly used in high voltage power systems.
The size of dog conductor depends on the current carrying capacity and the voltage rating of the electrical system.
The size of the dog conductor is determined by the electrical load it needs to carry.
The current carrying capacity of the conductor is directly proportional to its size.
The voltage rating of the electrical system also plays a role in determining the size of the conductor.
For example, a 20-ampere circuit re...
Earthing is the process of connecting the metallic parts of an electrical appliance to the earth plate.
Plate Earthing
Pipe Earthing
Rod Earthing
Strip Earthing
Earthing through Water Mains
Earthing through Earth Electrodes
Earthing through Foundation
Plate Earthing with Pipe
Chemical Earthing
Pipe earthing is done by connecting the pipe to a copper electrode buried in the ground.
Select a suitable location for the copper electrode
Dig a hole and insert the copper electrode into it
Connect the pipe to the copper electrode using a copper wire
Ensure that the connection is tight and secure
Cover the hole with soil and water it to ensure good contact between the electrode and the soil
The tests for concrete and steel include cube test for concrete and tensile test for steel. If the cube test fails, additional tests like rebound hammer test or ultrasonic pulse velocity test can be performed.
Concrete test: Cube test is performed to determine the compressive strength of concrete. A cube specimen is prepared and subjected to compressive load.
Steel test: Tensile test is conducted to measure the strength ...
In second round all questions ask about situation base and priority of safety at site.
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