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I applied via Campus Placement and was interviewed before Oct 2021. There were 3 interview rounds.
Math, reasoning, English and domain
A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.
Transformers work on the principle of electromagnetic induction
They have two coils, primary and secondary, wound around a common magnetic core
When an alternating current flows through the primary coil, it creates a magnetic field which induces a voltage in the secondary coil
The voltage in...
Motor working principles involve the interaction between magnetic fields and electric currents to produce rotational motion.
Electric current is passed through a coil of wire, creating a magnetic field that interacts with the magnetic field of a permanent magnet to produce rotational force.
The direction of the current determines the direction of the rotation.
Motor testing involves measuring the motor's performance chara...
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DOL (Direct-On-Line) and star delta are two different wiring schemes used in electrical engineering for starting induction motors.
DOL wiring directly connects the motor to the power supply for starting, while star delta wiring initially starts the motor in star configuration and then switches to delta configuration for running.
DOL wiring is simpler and cheaper but causes high starting current, while star delta wiring r...
I applied via Approached by Company and was interviewed in Jul 2022. There were 2 interview rounds.
I applied via Naukri.com and was interviewed in Dec 2021. There were 3 interview rounds.
posted on 1 Aug 2021
I applied via Newspaper Ad and was interviewed before Apr 2021. There were 3 interview rounds.
Hard work versus smart work.
The power plug earth wire is bigger in size to ensure safety and prevent electrical shocks.
The earth wire provides a path for the current to flow in case of a fault or short circuit.
A larger wire size reduces resistance and allows for the safe dissipation of excess current.
It helps to protect individuals and equipment from electric shock hazards.
The earth wire is connected to the ground, which acts as a reference point...
Copper (Cu) conductor will take larger current than Aluminum (Al) conductor of the same size.
Copper has a higher electrical conductivity than Aluminum.
Copper has a lower resistivity than Aluminum.
Copper has better thermal conductivity than Aluminum.
Copper is more commonly used in high-current applications.
Aluminum is often used in overhead power transmission lines due to its lighter weight.
Pulse width modulation (PWM) is a technique used in VFD to control the speed of the motor by adjusting the width of the pulses of voltage supplied to the motor.
PWM is a method of controlling the amount of power delivered to a load without changing the voltage level.
In VFD, PWM is used to control the speed of the motor by varying the width of the pulses of voltage supplied to the motor.
The width of the pulses is control...
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