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SHYAM METALICS AND ENERGY
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I applied via Referral and was interviewed before Dec 2023. There was 1 interview round.
Fleming's Left Hand Rule and Right Hand Rule are used to determine the direction of force, current, or magnetic field in electromagnetism.
Fleming's Left Hand Rule is used to determine the direction of force on a current-carrying conductor in a magnetic field.
Fleming's Right Hand Rule is used to determine the direction of induced current in a conductor moving in a magnetic field.
Both rules are based on the relationship ...
Motors convert electrical energy into mechanical energy, while generators convert mechanical energy into electrical energy.
Motors work on the principle of electromagnetic induction, where a current-carrying conductor experiences a force in a magnetic field.
Generators work on the principle of Faraday's law of electromagnetic induction, where a changing magnetic field induces an electromotive force in a conductor.
Motors ...
A transformer works on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.
Transformers have two coils of wire, known as the primary and secondary coils, which are wound around a core made of ferromagnetic material.
When an alternating current flows through the primary coil, it creates a changing magnetic field around the coil.
This changing magnetic field induces a volta...
The control circuit of a star-delta starter involves two contactors and a timer for smooth transition from star to delta connection.
The control circuit includes a main contactor for connecting the motor in star during starting.
A timer is used to delay the transition from star to delta connection to prevent sudden voltage spikes.
Once the timer elapses, a delta contactor is energized to switch the motor windings from sta...
Safety devices used in conveyor belts include pull cord switches, belt sway switches, and emergency stop switches.
Pull cord switches are used to stop the conveyor belt in case of emergency by pulling the cord.
Belt sway switches are used to detect any misalignment or deviation of the belt and trigger an alarm or stop the conveyor.
Emergency stop switches are placed at regular intervals along the conveyor belt to quickly
Electrical preventive maintenance activities include inspection, testing, cleaning, and replacement of components to prevent breakdowns.
Regular inspection of electrical systems
Testing of equipment for proper functioning
Cleaning of electrical components to prevent dust buildup
Replacement of worn out or damaged parts
Tightening of connections to prevent loose connections
Checking for overheating issues
Updating software/fir...
The generator excitation system is a system that provides the necessary field current to the generator rotor to produce the desired voltage output.
The excitation system controls the magnetic field strength of the generator to regulate the output voltage.
It typically consists of an exciter, voltage regulator, and automatic voltage regulator (AVR).
The exciter produces the field current, the voltage regulator adjusts the ...
Common malfunctions and troubleshooting methods for electrical feeders
Common malfunctions include short circuits, overloads, and open circuits
Troubleshooting methods involve checking for loose connections, using a multimeter to test for continuity, and inspecting for physical damage
In case of a short circuit, isolate the fault by disconnecting sections of the feeder until the fault is located
For overloads, check the lo...
The minimum megger value required for high tension (HT) and low tension (LT) motors is typically 500V for HT motors and 250V for LT motors.
Minimum megger value for HT motors is usually 500V
Minimum megger value for LT motors is typically 250V
Megger testing is essential to ensure insulation resistance in motors
A Megger generates DC voltage to test insulation resistance in electrical systems.
A Megger generates DC voltage typically ranging from 250V to 5000V
The reason for using DC voltage is to accurately measure the insulation resistance of electrical systems
DC voltage helps in detecting any insulation faults or breakdowns in the system
The high voltage generated by a Megger helps in identifying potential issues before they ca
The Megger value of unsatisfactory insulation can be improved by drying out the insulation, repairing any damaged areas, and retesting.
Dry out the insulation using heaters or fans to remove moisture
Repair any damaged areas by replacing or patching up the insulation
Retest the insulation using the Megger to ensure the value has improved
Consider using insulation coatings or sealants to improve the insulation resistance
Maintenance practices for transformers include regular inspections, testing, cleaning, and oil analysis.
Regularly inspecting for signs of overheating, leaks, or damage
Performing routine testing such as insulation resistance and turns ratio tests
Keeping the transformer and surrounding area clean and free of debris
Conducting oil analysis to monitor the condition of the transformer oil
Ensuring proper ventilation and cooli...
Steps to be taken if a transformer trips due to Buchholz relay acting
Immediately isolate the transformer from the system to prevent further damage
Inspect the transformer and Buchholz relay for any faults or leaks
Reset the Buchholz relay and check for proper functioning
Investigate the cause of the trip such as internal faults or oil contamination
Repair or replace any faulty components before re-energizing the transforme
Protective measures for a transformer include overcurrent protection, temperature monitoring, and regular maintenance.
Overcurrent protection: Use fuses or circuit breakers to protect against excessive current flow.
Temperature monitoring: Install temperature sensors to prevent overheating.
Regular maintenance: Inspect and test the transformer regularly to ensure proper functioning.
Grounding: Properly ground the transform...
Bus changeover scheme is a system used to transfer power supply from one source to another in case of a fault or maintenance.
Bus changeover scheme involves the use of automatic transfer switches (ATS) or manual switches to transfer power sources.
It ensures uninterrupted power supply by quickly switching to an alternate power source when needed.
Common examples include dual power supply systems in data centers or hospita...
I was interviewed in Jul 2022.
I applied via Referral and was interviewed before Dec 2022. There were 3 interview rounds.
I applied via Approached by Company and was interviewed before May 2021. There were 2 interview rounds.
I applied via Naukri.com and was interviewed in May 2021. There were 3 interview rounds.
I applied via AmbitionBox and was interviewed before Dec 2021. There were 2 interview rounds.
I applied via Company Website and was interviewed in Jul 2018. There were 5 interview rounds.
Implemented a new customer feedback system resulting in increased customer satisfaction and retention rates.
Identified the need for a more efficient feedback system
Researched and implemented a new software to collect and analyze customer feedback
Analyzed the data to identify trends and areas for improvement
Implemented changes based on feedback leading to improved customer satisfaction and retention rates
I have a strong passion for leadership and a proven track record of motivating teams to achieve success.
Proven track record of successfully leading teams in previous roles
Passionate about developing and mentoring team members
Strong communication and interpersonal skills
Ability to problem-solve and make quick decisions under pressure
I applied via Tata steel and was interviewed before Sep 2021. There were 2 interview rounds.
Standard 10th level questions.
I applied via Recruitment Consultant and was interviewed in May 2019. There were 3 interview rounds.
I applied via Campus Placement and was interviewed before Jan 2021. There were 5 interview rounds.
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