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I applied via Naukri.com and was interviewed in Oct 2023. There were 2 interview rounds.
There are several types of transformers used in electrical engineering.
Power transformers
Distribution transformers
Instrument transformers
Auto transformers
Isolation transformers
Step-up transformers
Step-down transformers
The number of earthing required for commencing a transformer depends on the type and size of the transformer.
The number of earthing required for a transformer depends on its rating and the local electrical regulations.
In general, a single earthing electrode is sufficient for small transformers with ratings up to a few hundred kVA.
For larger transformers, multiple earthing electrodes may be required to ensure proper gro...
Silica gel is a desiccant commonly used to absorb moisture and prevent the growth of mold and mildew.
Silica gel is a porous form of silicon dioxide.
It is often found in small packets or sachets.
It is used in various industries such as electronics, pharmaceuticals, and food packaging.
Silica gel can absorb moisture up to 40% of its own weight.
It is non-toxic and chemically inert.
Common uses include preserving the freshne...
VCB stands for Vacuum Circuit Breaker. It is a type of electrical switchgear used for protecting electrical circuits from overloads and short circuits.
VCB uses vacuum as the arc quenching medium instead of oil or air.
It is installed in high voltage power systems, such as substations and power plants.
VCBs are commonly used in distribution networks, generator circuits, and transformer circuits.
They provide reliable and e...
The acceptable current for humans depends on various factors such as duration, frequency, and pathway.
The acceptable current for humans is typically below 1 mA for low-frequency currents.
For high-frequency currents, the acceptable current is lower, usually below 0.1 mA.
The duration of exposure also plays a significant role in determining the acceptable current.
The pathway of the current through the body, such as hand-t...
An alternator is an electrical machine that converts mechanical energy into electrical energy.
An alternator is commonly used in vehicles to charge the battery and power the electrical system.
It operates on the principle of electromagnetic induction.
Alternators produce alternating current (AC) which is then converted to direct current (DC) using rectifiers.
They consist of a rotor, stator, and diodes.
The rotor is driven ...
A CT transformer, also known as a current transformer, is an electrical device used to measure alternating current (AC) by stepping down the current to a lower value.
CT transformers are commonly used in power systems to measure high currents without directly connecting measuring instruments to the circuit.
They consist of a primary winding, which carries the current to be measured, and a secondary winding, which is conn...
Rectifier Generator protection
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posted on 18 Oct 2021
I appeared for an interview before Oct 2020.
I applied via Naukri.com and was interviewed in Jan 2021. There was 1 interview round.
I applied via Walk-in and was interviewed in Jul 2019. There was 1 interview round.
Company expenses for engineers include salaries, benefits, training, equipment, and travel costs.
Salaries are a major expense for engineers, varying based on experience and specialization.
Benefits such as healthcare, retirement plans, and bonuses add to the overall expense.
Training programs to keep engineers updated with the latest technologies can be costly.
Equipment and tools needed for engineering work can be a sign...
posted on 21 Dec 2021
I applied via Campus Placement and was interviewed before Dec 2020. There was 1 interview round.
The question covers power factor of transformer, types of DC machine, working principle of AC alternator, and DC motors.
Power factor of a transformer is the ratio of real power to apparent power.
Types of DC machines include DC motors and DC generators.
AC alternators work on the principle of electromagnetic induction to convert mechanical energy into electrical energy.
DC motors convert electrical energy into mechanical ...
I applied via Campus Placement and was interviewed before Jun 2021. There were 2 interview rounds.
posted on 11 Oct 2022
I applied via Campus Placement and was interviewed before Oct 2021. There were 2 interview rounds.
I applied via Naukri.com and was interviewed in Jan 2021. There was 1 interview round.
posted on 26 Mar 2021
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