Hindalco Industries Electrical Technician Interview Questions and Answers

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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Q1. What is capacity your furnace
Ans. 
The capacity of a furnace refers to its heating output, typically measured in BTUs or tons.
• Furnace capacity is determined by the amount of heat it can produce.

• It is usually measured in BTUs (British Thermal Units) or tons.

• Higher capacity furnaces can produce more heat and are suitable for larger spaces.

• For example, a furnace with a capacity of 80,000 BTUs can heat a larger area compared to one with a capacity of 40,000
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Q2. What is drive components in CCM department
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Drive components in CCM department are the parts that enable the motor to function properly.
• Drive components include motors, gears, belts, and pulleys.

• They work together to transfer power from the motor to the machine.

• The components must be properly sized and aligned to ensure efficient operation.

• Examples of machines that use drive components include conveyor belts, pumps, and fans.
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Q1. Electrical control system and power control circuit
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Q1. Why do we improve power factor.
Ans. 
Improving power factor helps in reducing energy losses, increasing system efficiency, and reducing electricity costs.
• Improving power factor reduces the amount of reactive power flowing in the system, which in turn reduces energy losses.

• Higher power factor means more efficient use of electricity and less strain on the electrical system.

• Improving power factor can lead to reduced electricity costs for consumers and utilit...read more
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Q2. What is buccholz relay, how does it work?
Ans. 
Buccholz relay is a protective device used in oil-filled transformers to detect faults such as internal arcing or overheating.
• Buccholz relay is installed in the oil pipe connecting the transformer tank and conservator tank.

• It works based on the principle that gas is generated when a fault occurs in the transformer, causing oil level to drop and gas to accumulate in the relay.

• The relay consists of two float switches - o...read more
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Q3. What is DP in siemens communication?
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DP in Siemens communication stands for Distributed Peripherals.
• DP is a communication protocol used by Siemens for connecting distributed peripherals to a central control system.

• It allows for real-time data exchange between the peripherals and the control system.

• DP is commonly used in industrial automation applications.

• Examples of DP communication modules include DP/DP couplers and DP slaves.
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Q4. How do we communicate s7 PLC and abb drive using profibus.
Ans. 
To communicate S7 PLC and ABB drive using Profibus, you need to configure the Profibus network, set up the communication parameters, and establish the communication link.
• Configure the Profibus network by setting the correct baud rate, address, and other network parameters.

• Set up the communication parameters on both the S7 PLC and ABB drive to ensure they are compatible with each other.

• Establish the communication link b...read more
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Q1. What is Dc current ?
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DC current is the flow of electric charge in a constant direction.
• DC stands for Direct Current.

• It is the type of electric current that flows in a single direction.

• DC current is produced by sources such as batteries, fuel cells, and solar cells.

• It is commonly used in electronic devices and power transmission systems.

• Unlike AC (Alternating Current), DC current does not change its direction over time.
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Q2. What is Dc Current?
Ans. 
DC current is the flow of electric charge in a single direction.
• DC stands for Direct Current

• It is produced by sources such as batteries, fuel cells, and solar cells

• DC current is used in electronic devices such as computers, televisions, and radios

• DC current is measured in amperes (A)
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Reasoning and aptitude with technical

Q1. Motor and transformer related questions
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Q2. Tell me about yourself
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Q1. Transformer all details
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Q2. Working of all Motor details
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