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Premier Energies
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I applied via Company Website and was interviewed in May 2024. There was 1 interview round.
posted on 23 Apr 2024
I applied via Campus Placement
AC motor speed can be controlled using methods like voltage control, frequency control, and pole changing.
Voltage control: Adjusting the voltage supplied to the motor to change its speed.
Frequency control: Changing the frequency of the AC power supplied to the motor to control its speed.
Pole changing: Altering the number of poles in the motor to adjust its speed.
Using variable frequency drives (VFDs) for precise speed
posted on 25 Oct 2024
posted on 12 Mar 2024
There are three main types of high circuit breakers in high line: air circuit breakers, oil circuit breakers, and SF6 circuit breakers.
Air circuit breakers use air as the arc extinguishing medium.
Oil circuit breakers use oil as the arc extinguishing medium.
SF6 circuit breakers use sulfur hexafluoride gas as the arc extinguishing medium.
To find current in three phase, use the formula: Current = Power / (sqrt(3) * Voltage * Power Factor)
Calculate the total power in the three phase system
Determine the line-to-line voltage
Find the power factor of the system
Use the formula: Current = Power / (sqrt(3) * Voltage * Power Factor)
posted on 17 Feb 2022
I applied via Walk-in
I was interviewed in Apr 2022.
I applied via Approached by Company and was interviewed before Oct 2022. There were 4 interview rounds.
Written exam with technical and non technical
posted on 25 Mar 2022
I applied via LinkedIn and was interviewed before Mar 2021. There were 2 interview rounds.
posted on 2 Nov 2020
Motor testing involves various methods to check the performance and health of an electric motor.
Check the motor windings for continuity and resistance
Measure the voltage and current to determine power consumption
Inspect the bearings and lubrication for wear and tear
Perform a load test to evaluate the motor's ability to handle its rated load
Use specialized equipment like megohmmeters and oscilloscopes for more detailed
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