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I applied via Referral and was interviewed in Mar 2024. There was 1 interview round.
Understanding IS and root cause of failure is crucial for preventing future issues in production.
IS stands for Information Systems, which are used to collect, store, process, and distribute information within an organization.
Root cause analysis is a method used to identify the underlying cause of a problem or failure.
Having a strong understanding of IS can help identify potential failures in the production process and ...
I applied via Referral and was interviewed in Feb 2024. There was 1 interview round.
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
Consists of two coils of wire, known as primary and secondary coils
Primary coil is connected to a source of alternating current
Alternating current in primary coil creates a changing magnetic field
This changing magnetic field induces a voltage in the secondary coil
Voltage in secondary coil can be hig...
Safety devices in transformers include pressure relief devices, Buchholz relay, and temperature sensors.
Pressure relief devices are used to release excess pressure in the transformer to prevent explosions.
Buchholz relay is a gas and oil operated relay that detects internal faults in the transformer.
Temperature sensors are used to monitor the temperature of the transformer and prevent overheating.
Controlling devices in transformers are used to regulate voltage, protect against overloads, and ensure efficient operation.
Controlling devices such as tap changers are used to adjust the voltage ratio of the transformer to maintain a constant output voltage.
Protective devices like relays are used to detect and isolate faults such as overloads, short circuits, and overvoltage conditions.
Monitoring devices like temperat...
Delta connection and star connection are two types of connections used in electrical circuits. Delta connection is used for three-phase systems, while star connection is used for single-phase systems.
Delta connection is used in three-phase systems where the load is balanced and the power requirement is high.
Star connection is used in single-phase systems where the load is unbalanced and the power requirement is low.
Del...
Voltamp Transformers interview questions for popular designations
I applied via Walk-in and was interviewed in Apr 2023. There were 2 interview rounds.
I applied via AmbitionBox and was interviewed in Feb 2022. There were 2 interview rounds.
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Synchronous motor runs at a constant speed while hysteresis motor has a rotor that follows the rotating magnetic field.
Synchronous motor is used in applications where constant speed is required, such as in clocks and timers.
Hysteresis motor is used in applications where precise control of speed is required, such as in record players and tape recorders.
Synchronous motor has a stator and rotor that rotate at the same spe...
PLC is a hardware device that controls industrial processes, while SCADA is a software system that monitors and controls those processes.
PLC is a programmable logic controller that controls the input/output of industrial processes.
SCADA is a supervisory control and data acquisition system that collects and analyzes data from the industrial processes.
PLC is a hardware device, while SCADA is a software system.
PLC is used...
Relays are used for low power applications while contactors are used for high power applications.
Relays are typically used in control circuits to switch low power loads such as lights and fans.
Contactors are used to switch high power loads such as motors and compressors.
Relays have a lower current rating than contactors.
Contactors have larger contacts and can handle higher currents than relays.
Relays are typically smal...
Switches are used to control the flow of current in a circuit, while relays are used to switch a circuit on or off.
Switches are manually operated, while relays are electrically operated.
Switches are used in low voltage applications, while relays are used in high voltage applications.
Switches are simple in construction, while relays are more complex.
Examples of switches include light switches and toggle switches, while ...
Switch is an electronic component used to connect or disconnect a circuit while a timer is a device used to measure time intervals.
Switch is used to turn on/off a device while timer is used to control the duration of a device's operation.
Switch is a binary device with two states (on/off) while timer can be analog or digital and can measure time in seconds, minutes, or hours.
Examples of switches include light switches, ...
Numericals related questions
Regarding alternators and generators
posted on 10 Feb 2023
I applied via Naukri.com and was interviewed in Jan 2023. There were 2 interview rounds.
I was interviewed in Feb 2022.
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