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A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
Transformers consist of two coils of wire, known as the primary and secondary coils.
The primary coil is connected to a power source, creating a magnetic field when current flows through it.
This magnetic field induces a voltage in the secondary coil, transferring energy from the primary t...
Three phase current can be calculated using the formula: I = P / (√3 * V * cos(θ))
Calculate the power (P) in watts
Determine the voltage (V) in volts
Find the power factor (cos(θ))
Use the formula I = P / (√3 * V * cos(θ)) to calculate the three phase current
Power Factor is a measure of how effectively electrical power is being used in a system.
Power Factor is the ratio of real power to apparent power in an electrical system.
It is a number between 0 and 1, with 1 representing perfect efficiency.
Low power factor can result in increased energy costs and inefficient use of power.
Power Factor can be improved by using power factor correction devices like capacitors.
Example: A s...
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I applied via Approached by company and was interviewed in Aug 2021. There were 2 interview rounds.
Quant focussed Case Study (be prepared for calculations)
I applied via Company Website and was interviewed before Oct 2020. There was 1 interview round.
I appeared for an interview in Mar 2017.
To make the red fishes 98%, 50 fishes have to be removed from the aquarium.
Calculate 1% of 200 fishes, which is 2 fishes.
To make the red fishes 98%, subtract 1% (2 fishes) from 99% (198 fishes).
To find the number of fishes to be removed, divide the difference by 1% (2 fishes).
Therefore, 50 fishes have to be removed to make the red fishes 98%.
I appeared for an interview in Feb 2017.
I appeared for an interview in Mar 2017.
To make the red fishes 98%, 50 fishes have to be removed from the aquarium.
Calculate 1% of 200 fishes to find the number of red fishes.
Subtract the number of red fishes from 200 to find the number of non-red fishes.
Calculate 2% of the total number of fishes to find the desired number of red fishes.
Subtract the desired number of red fishes from the current number of red fishes to find the number of fishes to be removed.
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