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I applied via Naukri.com and was interviewed in Apr 2024. There was 1 interview round.
I applied via Naukri.com and was interviewed in Aug 2022. There were 3 interview rounds.
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Composite error and ratio error are two types of errors in current transformers.
Composite error is the combination of ratio error and phase angle error in a current transformer.
Ratio error is the difference between the actual turns ratio and the specified turns ratio of a current transformer.
Phase angle error is the angular difference between the primary and secondary currents of a current transformer.
Composite error a...
An AC drive circuit diagram controls the speed of an AC motor by varying the frequency and voltage of the power supplied to it.
An AC drive consists of a rectifier, DC link, inverter, and control circuitry.
The rectifier converts AC power to DC power, which is stored in the DC link.
The inverter converts the DC power back to AC power with variable frequency and voltage.
The control circuitry adjusts the frequency and volta...
A single line diagram of a distribution system is required with proper specifications.
The diagram should show the flow of power from the source to the load
It should include all components such as transformers, switchgear, and cables
The specifications should include voltage levels, power ratings, and protection devices
The diagram should follow standard symbols and conventions
Example: A 11 kV distribution system with a 5
Dewpoint test is done in transformer to check the moisture content in the insulation oil.
Moisture in insulation oil can cause breakdown of transformer insulation
Dewpoint test helps to determine the moisture content in the oil
It is a preventive maintenance measure to avoid transformer failure
The test involves cooling a mirror until dew forms on it, and measuring the temperature at which dew forms
Power transformers are used in transmission systems to step up or down voltage, while distribution transformers are used in distribution systems to step down voltage.
Power transformers are used in high voltage transmission systems to step up or down voltage for long distance transmission.
Distribution transformers are used in low voltage distribution systems to step down voltage for local distribution.
Power transformers...
Buchholz relay is used to protect transformers from faults by detecting gas and oil flow abnormalities.
Buchholz relay is installed in the pipe connecting the transformer tank and conservator tank.
It operates based on the principle that faults in the transformer generate gases and cause oil flow disturbances.
When gas or oil flow abnormalities occur, the relay trips and sends a signal to the control panel to isolate the ...
posted on 14 Sep 2022
I applied via Approached by Company and was interviewed before Sep 2021. There was 1 interview round.
posted on 29 Nov 2022
I applied via Walk-in and was interviewed in May 2022. There was 1 interview round.
The capacity of a furnace refers to its heating output, typically measured in BTUs or tons.
Furnace capacity is determined by the amount of heat it can produce.
It is usually measured in BTUs (British Thermal Units) or tons.
Higher capacity furnaces can produce more heat and are suitable for larger spaces.
For example, a furnace with a capacity of 80,000 BTUs can heat a larger area compared to one with a capacity of 40,000
Drive components in CCM department are the parts that enable the motor to function properly.
Drive components include motors, gears, belts, and pulleys.
They work together to transfer power from the motor to the machine.
The components must be properly sized and aligned to ensure efficient operation.
Examples of machines that use drive components include conveyor belts, pumps, and fans.
posted on 21 Apr 2024
posted on 10 May 2022
I applied via Campus Placement and was interviewed in Apr 2022. There were 4 interview rounds.
posted on 27 Jan 2025
Current is the flow of electric charge in a circuit.
Current is measured in Amperes (A)
It is the rate of flow of electric charge
Current flows from high potential to low potential
In a series circuit, the current remains the same throughout
Residence refers to a person's primary place of living.
Residence is where a person lives on a permanent or long-term basis.
It can refer to a house, apartment, or any other type of dwelling.
Residence can also refer to a legal status, such as residency in a particular country.
It is important for determining things like tax obligations and voting rights.
posted on 16 Jul 2024
I applied via Shine and was interviewed in Jan 2024. There were 3 interview rounds.
Daily maintenance procedures for electrical engineers ensure optimal performance and safety of electrical systems.
Inspecting and testing electrical equipment for any signs of wear or damage
Cleaning and lubricating moving parts to prevent friction and overheating
Checking and replacing faulty components such as fuses or circuit breakers
Calibrating sensors and meters to ensure accurate readings
Updating software and firmwa...
posted on 13 Jun 2024
I applied via Recruitment Consulltant and was interviewed in Dec 2023. There was 1 interview round.
Improving power factor helps in reducing energy losses, increasing system efficiency, and reducing electricity costs.
Improving power factor reduces the amount of reactive power flowing in the system, which in turn reduces energy losses.
Higher power factor means more efficient use of electricity and less strain on the electrical system.
Improving power factor can lead to reduced electricity costs for consumers and utilit...
Buccholz relay is a protective device used in oil-filled transformers to detect faults such as internal arcing or overheating.
Buccholz relay is installed in the oil pipe connecting the transformer tank and conservator tank.
It works based on the principle that gas is generated when a fault occurs in the transformer, causing oil level to drop and gas to accumulate in the relay.
The relay consists of two float switches - o...
DP in Siemens communication stands for Distributed Peripherals.
DP is a communication protocol used by Siemens for connecting distributed peripherals to a central control system.
It allows for real-time data exchange between the peripherals and the control system.
DP is commonly used in industrial automation applications.
Examples of DP communication modules include DP/DP couplers and DP slaves.
To communicate S7 PLC and ABB drive using Profibus, you need to configure the Profibus network, set up the communication parameters, and establish the communication link.
Configure the Profibus network by setting the correct baud rate, address, and other network parameters.
Set up the communication parameters on both the S7 PLC and ABB drive to ensure they are compatible with each other.
Establish the communication link b...
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