Hindalco Industries ITI Electrician, Electrical Maintenance Interview Questions and Answers

Physics chemistry maths

Q1. What is ohm's law
Ans. 
Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance of the conductor.
• Ohm's law is represented by the formula V = I * R, where V is voltage, I is current, and R is resistance.

• It helps in calculating the relationship between voltage, current, and resistance in an electrical circuit.

• For example, if a circuit has a vol...read more
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Q2. What is galvanometer
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A galvanometer is a device used to detect and measure small electric currents.
• Galvanometers typically consist of a coil of wire in a magnetic field, which deflects in response to the current flowing through it.

• They are often used as components in more complex instruments like ammeters and voltmeters.

• Galvanometers can be analog or digital, with analog versions displaying readings on a scale and digital versions showing ...read more
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Q3. What is power factor ?
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Power factor is the ratio of real power to apparent power in an electrical system.
• Power factor is a measure of how effectively electrical power is being used in a system.

• It is calculated by dividing the real power (in watts) by the apparent power (in volt-amperes).

• A power factor of 1 indicates all the power is being used effectively, while a power factor less than 1 indicates inefficiency.

• Improving power factor can red...read more
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Q4. What is galvenisation?
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Galvanization is the process of applying a protective zinc coating to steel or iron to prevent rusting.
• Galvanization involves immersing the metal in a bath of molten zinc or using an electroplating process.

• The zinc coating acts as a sacrificial anode, protecting the underlying metal from corrosion.

• Common examples of galvanized items include galvanized steel pipes, fences, and roofing materials.
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Aptitude test b.e electronics level

Q1. Dol and star delta wiring scheme
Ans. 
DOL (Direct-On-Line) and star delta are two different wiring schemes used in electrical engineering for starting induction motors.
• DOL wiring directly connects the motor to the power supply for starting, while star delta wiring initially starts the motor in star configuration and then switches to delta configuration for running.

• DOL wiring is simpler and cheaper but causes high starting current, while star delta wiring r...read more
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Q1. Wiring MCB bord switch
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Q2. Yes wiring board switchMCB
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Q1. What is different parameters in Siemens controller
Ans. 
Siemens controllers have different parameters for various applications.
• Siemens controllers have different parameters for motion control, temperature control, and process control.

• Parameters for motion control include acceleration, deceleration, and maximum velocity.

• Parameters for temperature control include setpoint, proportional band, and integral time.

• Parameters for process control include setpoint, deadband, and gain...read more
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Q2. What is different parameter in fanuk
Ans. 
Fanuc has different parameters for various functions such as motion control, spindle control, and tool management.
• Fanuc parameters are used to control various functions such as motion control, spindle control, and tool management.

• Parameters can be set to adjust the speed, acceleration, and deceleration of the machine.

• Fanuc parameters can also be used to set up alarms and diagnostic messages.

• Examples of Fanuc parameters...read more
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Q3. What types of controller in our company
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Q4. Which type of use plc
Ans. 
PLCs are used in various industries for automation and control purposes.
• PLCs are commonly used in manufacturing industries for controlling assembly lines and machines.

• They are also used in the automotive industry for controlling robotic arms and conveyor belts.

• PLCs are used in the food and beverage industry for controlling mixing and packaging machines.

• They are used in the energy sector for controlling power plants and...read more
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Q5. Which type of use vfd
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VFDs are used to control the speed of AC motors in various applications.
• VFDs are commonly used in HVAC systems to control the speed of fans and pumps.

• They are also used in industrial applications to control conveyor belts and other machinery.

• VFDs can improve energy efficiency and reduce wear and tear on equipment.

• They are often used in renewable energy systems to control the speed of wind turbines and solar panels.

• VFDs...read more
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Q6. Which type of machine
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Q1. I am working from Grid sub station . Transformer... CT PT CVT EARTHING PTW
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Q2. All about 132 kv Gss
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