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I applied via Referral and was interviewed in Feb 2021. There was 1 interview round.
A Megger is an electrical test instrument used to measure insulation resistance.
It is used to test the insulation resistance of electrical wires and cables.
It works by applying a high voltage to the insulation and measuring the resulting current.
It is commonly used in the maintenance and troubleshooting of electrical systems.
Megger readings can indicate the presence of insulation damage or degradation.
Meggers come in v...
Breakers are devices used to protect electrical circuits from damage caused by overload or short circuit.
Circuit Breakers
Fuse
Ground Fault Circuit Interrupter (GFCI)
Arc Fault Circuit Interrupter (AFCI)
Miniature Circuit Breaker (MCB)
Molded Case Circuit Breaker (MCCB)
Air Circuit Breaker (ACB)
Oil Circuit Breaker (OCB)
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posted on 5 Jan 2021
Transformer losses refer to the energy losses that occur during the operation of a transformer.
Transformer losses include copper losses and iron losses.
Copper losses occur due to the resistance of the transformer windings.
Iron losses, also known as core losses, occur due to hysteresis and eddy currents in the transformer core.
Copper losses can be minimized by using larger conductor sizes and reducing the resistance of ...
Efficiency of transformer is the ratio of output power to input power.
Efficiency is affected by factors such as core losses, winding resistance, and load impedance.
Efficiency can be improved by using high-quality materials, proper design, and regular maintenance.
Efficiency is expressed as a percentage and can range from 50% to 99% depending on the transformer type and application.
Non-sparking equipment and lights are used in hazardous environments to prevent explosions.
Non-sparking tools are made of materials that do not create sparks when struck or rubbed against each other.
Non-sparking lights use LED technology and are enclosed in a housing that prevents sparks from escaping.
These techniques are commonly used in industries such as oil and gas, chemical, and mining.
Examples of non-sparking too...
posted on 5 Dec 2023
I applied via Company Website and was interviewed before Dec 2022. There were 2 interview rounds.
posted on 11 Dec 2023
I applied via Campus Placement and was interviewed in Aug 2024. There was 1 interview round.
The unit of Energy is Joule (J)
The unit of Energy is Joule (J)
Energy can also be measured in kilowatt-hours (kWh)
1 Joule is equal to 1 watt-second
The unit of resistance is Ohm (Ω).
The unit of resistance is represented by the symbol Ω (Ohm).
Resistance is measured in Ohms, named after the German physicist Georg Simon Ohm.
One Ohm is equal to one volt per ampere (1 Ω = 1 V/A).
The unit of current is Ampere (A)
The unit of current is Ampere (A)
Current is the flow of electric charge in a circuit
1 Ampere is equivalent to 1 Coulomb per second
Current is measured using an ammeter
The unit of capacitance is Farad (F)
The unit of capacitance is named after Michael Faraday
1 Farad is equal to 1 Coulomb per Volt
Common multiples of Farad include microfarad (uF) and picofarad (pF)
The unit of power is the watt (W)
The unit of power is the watt (W)
Power is the rate at which work is done or energy is transferred
1 watt is equal to 1 joule per second
Common examples of power units include kilowatts (kW) and horsepower (hp)
The unit of power is the watt (W).
The unit of power is the watt (W)
Power is the rate at which work is done or energy is transferred
1 watt is equal to 1 joule per second
Common examples of power units include kilowatts (kW) and horsepower (hp)
The unit of current is Ampere (A), which measures the rate of flow of electric charge.
The unit of current is Ampere (A)
Current is the rate of flow of electric charge
Commonly represented by the symbol 'I'
1 Ampere is equivalent to 1 Coulomb per second
posted on 26 Dec 2022
I applied via Recruitment Consulltant and was interviewed before Dec 2021. There were 2 interview rounds.
Star-Delta starter is used to start 3-phase motors. It reduces the starting current and torque.
Star-Delta starter connects the motor in star configuration during starting to reduce the starting current and torque.
After a few seconds, the starter switches the motor to delta configuration for normal operation.
This method is used for motors with high starting current and torque requirements.
It is commonly used in industri...
DOL starter is a direct-on-line starter used to start 3-phase motors by connecting them directly to the power supply.
DOL starter provides full voltage to the motor at the start
It consists of a contactor, overload relay, and start/stop push buttons
The contactor connects the motor to the power supply
The overload relay protects the motor from overloading
The start/stop push buttons control the on/off function of the motor
posted on 20 Jul 2024
I applied via Campus Placement and was interviewed before Nov 2020. There were 4 interview rounds.
posted on 4 May 2019
I applied via Approached by Company and was interviewed in Oct 2018. There were 5 interview rounds.
I applied via Walk-in and was interviewed before Dec 2020. There was 1 interview round.
I applied via Walk-in and was interviewed before Nov 2020. There was 1 interview round.
A circuit breaker is an electrical switch that automatically interrupts the flow of current when it exceeds a certain limit.
It is used to protect electrical circuits from damage caused by overloading or short circuits.
It works by detecting the excess current and tripping the switch to break the circuit.
It can be reset manually or automatically depending on the type of circuit breaker.
Examples include thermal circuit br...
A contactor is an electrical switch used for switching an electrical circuit on or off.
It is used to control electric motors, lighting, heating, and other electrical loads.
It consists of a coil, contacts, and an enclosure.
The coil generates a magnetic field that pulls the contacts together to close the circuit.
Examples include HVAC systems, elevators, and industrial machinery.
Contactor ratings are based on the amount o...
MCB stands for Miniature Circuit Breaker. It is an electrical switch that automatically shuts off the electrical circuit during an overload or short circuit.
MCB is a type of circuit breaker that is commonly used in residential and commercial buildings.
It is designed to protect electrical circuits from damage caused by overloading or short circuits.
MCBs are available in different current ratings and can be easily replac...
A motor is a device that converts electrical energy into mechanical energy to produce motion.
Motors are used in various applications such as electric vehicles, industrial machinery, and household appliances.
There are different types of motors such as DC motors, AC motors, stepper motors, and servo motors.
The basic principle of a motor is the interaction between a magnetic field and an electric current.
Examples of motor...
A current transformer is a device that measures the current flowing in a circuit by producing a proportional current in its secondary winding.
Consists of a primary winding and a secondary winding
Primary winding is connected in series with the circuit carrying the current to be measured
Secondary winding is connected to a measuring instrument or protective relay
Produces a current in the secondary winding that is proporti...
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