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I applied via Company Website and was interviewed in Aug 2022. There were 4 interview rounds.
A compressor is a mechanical device that increases the pressure of a gas by reducing its volume.
Compressors are commonly used in various industries, including painting, to supply compressed air for tools and equipment.
They work by drawing in air and then compressing it to a higher pressure before releasing it.
Compressors can be powered by electricity, gasoline, or diesel engines.
They come in different types, such as re...
The blasting nozzle size depends on the type of blasting being done and the material being blasted.
The blasting nozzle size can range from 1/8 inch to 1 inch or more.
For fine blasting, a smaller nozzle size is used, while for heavy-duty blasting, a larger nozzle size is used.
The material being blasted also affects the nozzle size, as harder materials require a larger nozzle size.
The blasting pressure and distance from ...
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I applied via Walk-in and was interviewed in Jul 2022. There were 2 interview rounds.
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Gascuttung, grinding, practicaltest
I applied via Recruitment Consultant and was interviewed in Dec 2021. There was 1 interview round.
National Petroleum Construction Company interview questions for popular designations
I appeared for an interview before Nov 2020.
Types of transformers include power transformers, distribution transformers, autotransformers, isolation transformers, and instrument transformers.
Power transformers are used to step up or step down voltage in power transmission systems.
Distribution transformers are used to step down voltage for distribution to consumers.
Autotransformers have a single winding and are used for voltage regulation.
Isolation transformers p...
IR test stands for Insulation Resistance test which is used to measure the resistance of insulation material.
IR test is used to check the quality of insulation material used in electrical equipment.
It helps to detect any insulation failure or breakdown in the equipment.
The test involves applying a high voltage to the insulation material and measuring the current flowing through it.
The measured resistance value is compa...
CT stands for Current Transformer, a device used to measure electrical current.
CT is a type of transformer that steps down high current to a lower, measurable level.
It is commonly used in power systems to measure current flowing through a circuit.
CTs are also used for protection purposes, such as detecting overcurrent or short circuits.
CTs can be either solid-core or split-core, with the latter being easier to install.
...
I applied via Company Website and was interviewed before Nov 2016. There were 5 interview rounds.
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I applied via Naukri.com and was interviewed in Oct 2020. There were 3 interview rounds.
I applied via Recruitment Consultant and was interviewed before Apr 2020. There were 3 interview rounds.
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Electrical Technician
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| ₹6 L/yr - ₹14 L/yr |
Pipe Fabricator
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| ₹0.4 L/yr - ₹6.3 L/yr |
Mechanical Technician
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| ₹7.2 L/yr - ₹12.4 L/yr |
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