VVDN Technologies Interview Questions, Process, and Tips

Q1. What’s is this wave soldering
Ans. 
Wave soldering is a soldering process used in electronics manufacturing to solder through-hole components onto a printed circuit board.
• Wave soldering involves passing a PCB over a wave of molten solder to solder the components in place.

• The wave is created by a pump that circulates the molten solder in a tank.

• Components are prepped with solder paste before being placed on the PCB for wave soldering.

• Wave soldering is com...read more
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Q2. What’s is this wave soldering process
Ans. 
Wave soldering is a soldering process used in electronics manufacturing to solder through-hole components on a PCB.
• Wave soldering involves passing a PCB over a wave of molten solder to solder the components in place.

• The wave is created by a pump that circulates the molten solder in a tank.

• Components are prepped with flux to ensure proper soldering.

• Wave soldering is commonly used for through-hole components in mass prod...read more
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Q1. Wave soldering with maintenance
Ans. 
Wave soldering is a process used in electronics manufacturing to solder through-hole components on a PCB by passing it over a wave of molten solder.
• Wave soldering is a cost-effective and efficient method for soldering through-hole components on a PCB.

• Regular maintenance of the wave soldering machine is essential to ensure consistent soldering quality.

• Maintenance tasks may include cleaning the solder wave, checking temp...read more
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Aptitude questions include English test, coding test, programming related questions

Q1. What is functional pointer
Ans. 
A functional pointer is a pointer that points to a function instead of a data object.
• Functional pointers are used to call functions indirectly.

• They can be passed as arguments to other functions.

• Example: int (*ptr)(int, int) = &add; where add is a function that takes two integers and returns an integer.
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Q2. What is static keyword in c
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The static keyword in C is used to declare variables and functions with a local scope that persists throughout the program's execution.
• Static variables retain their value between function calls

• Static functions can only be called within the file they are defined in

• Static variables are initialized only once at the start of the program

• Static keyword can also be used to limit the scope of global variables to the file they
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Q1. Explain compilation process of c programming
Ans. 
Compilation process of C programming involves preprocessing, compiling, assembling, and linking.
• Preprocessing: Includes header files, macro expansion, and conditional compilation.

• Compiling: Translates source code into assembly code specific to the target platform.

• Assembling: Converts assembly code into machine code in object files.

• Linking: Combines object files and libraries to generate an executable file.
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Q2. Coding questions related to string manupul
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Q1. What are services in Angular?
Ans. 
Services in Angular are reusable pieces of code that can be injected into components or other services to provide functionality.
• Services are singleton objects in Angular, meaning they are instantiated only once during the lifetime of an application.

• They are used to encapsulate logic that is not specific to a particular component, such as data fetching, logging, or authentication.

• Services can be injected into components...read more
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Q2. Explain map and filter functions
Ans. 
Map and filter functions are used in JavaScript to manipulate arrays by transforming elements or filtering based on a condition.
• Map function applies a function to each element in an array and returns a new array with the results.

• Example: let numbers = [1, 2, 3]; let squaredNumbers = numbers.map(num => num * num); // [1, 4, 9]

• Filter function creates a new array with elements that pass a certain condition.

• Example: let nu...read more
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Usual Questionnaire was asked Multiple Choice Questions.
Don't expect anything difficult

Q1. Tell me about yourself
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Q2. Strength and Weakness
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Q3. Sales process and how to tackle issues
Ans. 
Sales process involves prospecting, qualifying, presenting, handling objections, closing, and follow-up.
• Understand the customer's needs and pain points

• Build rapport and trust with the customer

• Present solutions that address the customer's needs

• Handle objections effectively by addressing concerns

• Close the sale by asking for the business

• Follow up with customers to ensure satisfaction and build long-term relationships
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Q4. How will you build relationships
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