Aztec Trainee Interview Questions and Answers

Its online test consists of technical topics

2 GD's

Q1. Technical questions based on your specialization
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Q1. What is transformer?
Ans. 
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Transformers are commonly used to increase or decrease voltage in electrical circuits.

• They consist of two coils of wire, known as the primary and secondary coils.

• The primary coil is connected to a power source, while the secondary coil is connected to the load.

• Examples of transformers include power ...read more
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Q2. What is the use of relay in DI
Ans. 
Relays in Dependency Injection are used to control the creation and lifecycle of objects.
• Relays help in decoupling the creation of objects from their usage.

• They can be used to provide different implementations of an interface based on certain conditions.

• Relays can also be used for lazy loading of objects to improve performance.

• They help in managing the dependencies of objects in a flexible and modular way.
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Q3. Compare profinet and ethernet
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Profinet is a real-time industrial Ethernet protocol used for automation, while Ethernet is a general networking protocol used for data communication.
• Profinet is specifically designed for industrial automation applications, providing real-time communication and deterministic behavior.

• Ethernet is a widely used networking protocol for general data communication in various industries and applications.

• Profinet offers highe...read more
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Q4. What is RS232 protocol
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RS232 protocol is a standard for serial communication between devices, commonly used in computer systems.
• RS232 uses a DB9 or DB25 connector for communication

• It uses asynchronous communication

• Data is transmitted one bit at a time

• Commonly used for connecting devices like modems, printers, and GPS receivers
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Got some aptitude question in the company side, and the candidates want to finish in the given time

Q1. Basic question about my resume
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Q2. Analytic questions and case study question to test my handling the situation skills
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Q1. Detail OOP concept with real life examples?
Ans. 
OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOP focuses on creating objects that interact with each other to solve problems

• Encapsulation: Objects can hide their internal state and require interaction through defined interfaces

• Inheritance: Objects can inherit attributes and methods from parent classes

• Polymorphism: Objects ...read more
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Q2. SQL query to find highest salary.
Ans. 
Use SQL query with MAX function to find highest salary.
• Use SELECT statement with MAX function to retrieve highest salary from salary column.

• Example: SELECT MAX(salary) FROM employees;

• Make sure to replace 'employees' with the actual table name where salary data is stored.
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Q1. Self introduction, your experience,skill
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Q1. HOW TO INTERFACE DIFFERENT PLC'S AND SCADA'S
Ans. 
PLC's and SCADA's can be interfaced using communication protocols like Modbus, Profibus, Ethernet/IP, etc.
• Use communication protocols like Modbus, Profibus, Ethernet/IP to establish communication between PLC's and SCADA systems

• Ensure compatibility between the PLC's and SCADA systems in terms of communication protocols and data formats

• Set up appropriate communication parameters such as baud rate, parity, and data bits

• Ma...read more
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Q2. Difference between HMI and Scada?
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HMI is a user interface that connects a person to a machine, while SCADA is a system for gathering and analyzing real-time data.
• HMI focuses on the interaction between humans and machines, providing a graphical interface for users to monitor and control processes.

• SCADA is a centralized system that collects data from various sensors and equipment in real-time, allowing for monitoring and control of entire systems.

• HMI is ...read more
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Q3. What is a RTU?
Ans. 
A RTU stands for Remote Terminal Unit, which is a device used to connect various sensors and equipment in a remote location to a central control system.
• RTUs are commonly used in industries such as oil and gas, water treatment plants, and power distribution.

• They collect data from sensors and equipment, and transmit it back to a central control system for monitoring and control.

• RTUs are often used in conjunction with SCA...read more
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Q1. Pneumatic cylinders and it process
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Q2. Pneumatic circuits
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