ABB Interview Questions, Process, and Tips

Q1. Elevator related
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Q2. Regarding servicing of VFDs
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Q1. Identification of error
Ans. 
By conducting thorough system analysis, testing, and utilizing diagnostic tools.
• Conduct thorough system analysis to understand the system's functionality and potential issues.

• Perform testing to identify any abnormalities or malfunctions in the system or equipment.

• Utilize diagnostic tools such as multimeters, oscilloscopes, and software programs to pinpoint errors.

• Review error logs and system documentation for clues on ...read more
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Q2. Repairing
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Introduction and good futer

Bater life future goals good work safly diciplin

Q1. Asambly fitter work good work experience and tanking asambly dispetch work smart working hard work asambly fitter job
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Q2. Good working Hard asambly fitter
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Q3. Diciplin safety follow
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Q4. 5 s good planingfolloand ppe follow rules
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Q5. Asambly safty now rules folow
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Aptitude and logical questions

Q1. What is inheritance in oops?
Ans. 
Inheritance in OOP allows a class to inherit properties and behaviors from another class.
• Inheritance promotes code reusability by allowing a new class to take on the attributes and methods of an existing class.

• The class that is being inherited from is called the parent class or superclass, while the class that inherits is called the child class or subclass.

• Subclasses can add new methods or override existing methods fro...read more
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Q2. What is virtual function?
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A virtual function is a function in a base class that is declared using the keyword 'virtual' and can be overridden by a function in a derived class.
• Virtual functions allow a derived class to provide a specific implementation of a function that is already defined in a base class.

• They enable polymorphism, where a function call is resolved at runtime based on the actual type of object being referred to.

• Virtual functions ...read more
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Q3. What is difference between array and liked list?
Ans. 
Arrays store elements in contiguous memory locations, while linked lists store elements in nodes with pointers to the next node.
• Arrays have fixed size, while linked lists can dynamically grow or shrink.

• Accessing elements in arrays is faster (O(1)), while accessing elements in linked lists is slower (O(n)).

• Inserting or deleting elements in arrays can be inefficient as it may require shifting elements, while in linked li...read more
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Q4. What is stack? and to implement it?
Ans. 
A stack is a data structure that follows the Last In, First Out (LIFO) principle.
• Stack is a collection of elements with two main operations: push (adds an element to the top) and pop (removes the top element).

• Common implementations of stack include using arrays or linked lists.

• Example: Pushing elements 1, 2, and 3 onto a stack would result in 3 being at the top, followed by 2, and then 1.
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Q5. What is string function in structures?
Ans. 
String function in structures refers to operations that can be performed on string data within a data structure.
• String functions in structures can include operations like concatenation, substring extraction, searching, and comparison.

• For example, a structure may have a string member representing a person's name, and string functions can be used to manipulate or extract parts of the name.

• These functions can help in orga...read more
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Q1. Tell me about yourself
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Q2. Elaborate your professional background
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