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I was interviewed in Jan 2025.
Star delta starter is a type of reduced voltage starter used for starting high power motors.
Consists of two contactors - one for star connection and one for delta connection
Reduces starting current and torque to prevent damage to motor windings
Commonly used for motors with high starting current requirements, such as induction motors
Hysteresis loss can be calculated using the area enclosed by the hysteresis loop on a B-H curve.
Calculate the area enclosed by the hysteresis loop on a B-H curve
Use the formula: Hysteresis Loss = ∮B.dH
Consider the material's properties and operating conditions for accurate calculation
Skin effect is the tendency of alternating current to flow near the surface of a conductor, due to self-inductance.
Skin effect is more prominent at higher frequencies.
It causes the effective resistance of the conductor to increase.
Skin effect can be reduced by using hollow conductors or by using stranded conductors.
Example: Skin effect is a common phenomenon in high-frequency transmission lines.
Fluorescent effect is the emission of light by a substance that has absorbed light or other electromagnetic radiation.
Fluorescent effect occurs when a substance absorbs light at a specific wavelength and then re-emits light at a longer wavelength.
Common examples include fluorescent light bulbs, glow-in-the-dark materials, and certain minerals that glow under UV light.
Fluorescent materials can be used in various applica...
In a parallel circuit, components are connected in separate branches, allowing current to flow through multiple paths. In a series circuit, components are connected in a single path, where current flows through each component in sequence.
Parallel circuit allows current to flow through multiple paths, while series circuit has only one path for current.
In a parallel circuit, voltage across each component is the same, whi...
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posted on 6 Mar 2020
I applied via Naukri.com and was interviewed before Mar 2019. There were 4 interview rounds.
posted on 4 Feb 2025
I was interviewed before Feb 2024.
I applied via Walk-in and was interviewed before Feb 2020. There was 1 interview round.
3ph induction motor works on the principle of electromagnetic induction to convert electrical energy into mechanical energy.
Three-phase AC power is supplied to the stator winding, creating a rotating magnetic field.
This rotating magnetic field induces a current in the rotor, which in turn creates its own magnetic field.
The interaction between the stator and rotor magnetic fields causes the rotor to rotate, converting e
1 HP is equal to 746 watts.
HP stands for horsepower, a unit of power used in the automotive and manufacturing industries.
Watt is the SI unit of power.
The conversion factor between HP and watt is 746.
I applied via Recruitment Consultant and was interviewed in Jul 2020. There were 3 interview rounds.
Incremental encoder measures relative position changes while absolute encoder measures absolute position.
Incremental encoder generates a series of pulses as the shaft rotates, which are used to determine the relative position change.
Absolute encoder generates a unique digital code for each shaft position, providing absolute position information.
Incremental encoder is simpler and less expensive, while absolute encoder i...
I applied via Company Website and was interviewed in Jan 2023. There was 1 interview round.
I applied via Campus Placement
posted on 26 Dec 2021
I applied via Campus Placement
Backless is not a technical term. PLC stands for Programmable Logic Controller. Ladder is used for programming PLCs.
Backless is not a technical term used in maintenance engineering.
PLC stands for Programmable Logic Controller, a digital computer used for automation of electromechanical processes.
Ladder logic is a programming language used to program PLCs.
Ladder logic is called so because it resembles a ladder with two ...
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