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Earthing is an important safety measure in electrical systems.
Earthing provides a path for fault current to flow safely to the ground.
There are different types of earthing systems such as TN, TT, and IT.
The number of earthing points depends on the type of system and the size of the installation.
For example, a small domestic installation may have one earth rod, while a large industrial installation may have multiple ear...
The five types of earthing are: plate earthing, pipe earthing, rod earthing, strip earthing, and water pipe earthing.
Plate earthing involves burying a metal plate in the ground and connecting it to the electrical system.
Pipe earthing uses a metal pipe driven into the ground and connected to the electrical system.
Rod earthing utilizes a metal rod driven into the ground and connected to the electrical system.
Strip earthi...
The current in a 3 phase system depends on the voltage and power of the system.
The current in a 3 phase system can be calculated using the formula: I = P / (sqrt(3) * V)
Where I is the current, P is the power, and V is the voltage
For example, if the power is 1000W and the voltage is 240V, the current would be approximately 4.33A
MCB stands for Miniature Circuit Breaker, a device designed to protect electrical circuits from overloads and short circuits.
MCB is a type of circuit breaker that automatically switches off electrical circuits during abnormal conditions like overload or short circuit.
It is commonly used in residential and commercial electrical installations to protect wiring and electrical equipment.
MCBs are available in different curr...
To check AC DC current, use a multimeter set to the appropriate setting and connect the probes to the circuit being tested.
Set the multimeter to the AC or DC current setting depending on what you are testing.
Ensure the multimeter probes are connected correctly to the circuit being tested.
Read the current measurement displayed on the multimeter.
For AC current, make sure the multimeter is set to the appropriate range (e....
To check cable continuity, use a multimeter to measure resistance between two points on the cable.
Use a multimeter set to the resistance or continuity mode.
Connect one probe to one end of the cable and the other probe to the other end.
A low resistance reading indicates good continuity, while a high resistance or infinite reading indicates a break in the cable.
Check for continuity in each conductor of the cable separate...
PVC stands for Polyvinyl Chloride, a type of plastic commonly used in construction and electrical applications.
PVC is a versatile material known for its durability and resistance to chemicals.
It is commonly used in electrical wiring, plumbing pipes, and vinyl flooring.
PVC is lightweight, easy to install, and cost-effective compared to other materials.
Examples of PVC products include PVC pipes, PVC electrical conduits,
The motor work in AC is based on electromagnetic induction, while in DC it is based on the Lorentz force principle.
AC motors work on the principle of electromagnetic induction, where a changing magnetic field induces a current in the rotor coils.
DC motors operate based on the Lorentz force principle, where a current-carrying conductor in a magnetic field experiences a force.
Examples of AC motors include induction motor...
I applied via Company Website and was interviewed in Jul 2022. There was 1 interview round.
I applied via Walk-in and was interviewed in Jan 2022. There was 1 interview round.
I applied via Referral and was interviewed before Mar 2020. There were 3 interview rounds.
I applied via Referral and was interviewed before Sep 2021. There were 3 interview rounds.
I applied via Approached by Company and was interviewed before Nov 2022. There was 1 interview round.
I have 5 years of statistical analysis experience in various engineering projects.
I have worked on analyzing data sets to identify trends and patterns.
I have experience with hypothesis testing and regression analysis.
I have used statistical software such as R and Python for data analysis.
I have presented statistical findings to stakeholders in a clear and concise manner.
I applied via Job Portal and was interviewed in Apr 2021. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in Jan 2024. There was 1 interview round.
I applied via Approached by Company and was interviewed in Sep 2024. There was 1 interview round.
I have 5 years of experience working as a mechanical engineer in the automotive industry.
Worked on designing and testing components for vehicles
Collaborated with cross-functional teams to improve product performance
Implemented cost-saving measures in production processes
based on 3 interviews
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