LabVIEW Interview Questions

According to 6sense, LabVIEW software has the highest market share among visual programming development platforms. It is widely used in aerospace, automotive, instrumentation, R&D, and other industries.

The job opportunities for labview professionals across the globe are so high. Keeping this in mind, MindMajix offers comprehensive LabVIEW Interview Questions and answers in this article, helping aspirants crack their LabVIEW interviews effortlessly.

Let’s get in!

Table of Contents

• Skills required for LabVIEW Professionals
• Job Responsibilities of LabVIEW professionals
• LabVIEW Interview Questions

• • for Beginners
  • for Intermediate
  • for Experienced

• Scenario-based questions
• LabVIEW Interview Tips
• Frequently Asked LabVIEW Interview Questions

Top 10 LabVIEW Interview Questions

1. What is the Latest Version of LabVIEW?
2. What are the key features of LabVIEW?
3. What is a State Machine in LabVIEW?
4. What are the different loops used in LabVIEW?
5. What files can you use apart from .txt as input in LabVIEW?
6. Does LabVIEW support AI/ML models for data integration?
7. How does LabVIEW execute version control of programs?
8. How can you improve LabVIEW's performance?
9. How will you configure DAQ devices in LabVIEW?
10. Explain about the LabVIEW FPGA Module.

Skills Required for LabVIEW Professionals

Before discussing the LabVIEW interview questions, consider the crucial skills required for LabVIEW Professionals.

Primary Skills:

• Deep understanding of LabVIEW programming concepts, including VI and subVIs, loops, dataflow, structures, functions, etc.
• Sound exposure to DAQ systems, including sensors, signal conditioning, sampling, and data logging.
• Good knowledge of communication protocols, including TCP/IP, RS232, Modbus, GPIB, etc.
• Strong Understanding of modular programming, custom VIs, state machines, etc.
• Knowledge of automated testing systems, TestStand integration, measurements and instrumentation.
• Expertise in debugging and error handling of LabVIEW programs.

Secondary Skills:

• Decent knowledge of the Software Development Lifecycle (SDLC)
• Exposure to Simulink, Matlab,  and CAD software.
• Solid problem-solving and analytical skills.
• Excellent collaboration and problem-solving skills

Yes! Having these skills will be a huge plus. It will help you breeze through your LabVIEW interviews.

Job Responsibilities of LabVIEW Professionals

In this section, we list the job responsibilities of LabVIEW professionals for different expertise levels.

Entry-Level:

• Designing, developing, testing and debugging of LabVIEW applications
• Identify suitable resources for control design, DAQ systems, and software architecture for ongoing projects.
• Developing and maintaining clean, concise, and easy-to-understand documentation
• Staying updated with the latest developments in the graphical application development platform.

Middle-Level:

• Creating modular applications using LabVIEW’s built-in parallel processing features
• Integrating LabVIEW with DAQ hardware, real-time systems, FPGA, and external instruments.
• Working with networking protocols for data exchange between systems
• Create neat, well-versed reports and share details with stakeholders.
• Working with cross-functional teams and developing applications on time.

Senior-Level:

• Collaborating with stakeholders to understand their specific needs
• Reviewing codes and optimising them for building high-performing LabVIEW applications
• Designing the architecture and roadmap for the development of complex LabVIEW programs
• Planning, handling resources, monitoring and shaping crucial projects
• Working with cross-functional teams to develop release plans and product implementation.

Sure! Understanding LabVIEW professionals' job responsibilities helps polish your interview preparation and enables you to perform well in your workplace from day one.                 

LabVIEW Interview Questions

Let’s go through important LabVIEW Interview Questions and Answers at various expertise levels.

LabVIEW Interview Questions for Beginners

This section includes the fundamental LabVIEW interview Q&A, giving you a good start for your learning journey.

Let’s get started!

1. What is LabVIEW?

LabVIEW stands for Laboratory Virtual Instrument Engineering Workbench. It is a graphical programming platform for developing and testing systems for data acquisition, instrument control, and more. LabVIEW is widely used in research, education, and engineering product development domains.

If you want to enrich your career and become a professional in LabVIEW, then enrol in "LabVIEW Online Training". This course will help you to achieve excellence in this domain.

2. What is the latest version of LabVIEW?

LabVIEW 2024 Q3 is the latest version of the LabVIEW software. It was released in July 2024.

3. What are the new features of the latest LabVIEW version?

Below are the new features of LabVIEW 2024 Q3.

• Supports loading and running .NET core 8.0 assemblies on Windows Operating System.
• Offers features for enhanced VI comparisons.
• This release provides a new 'save version' option, which allows VIs to be saved in previous LabVIEW versions.                        

4. What are Virtual Instruments (VI) in LabVIEW?

• Virtual Instruments are the building blocks of LabVIEW programs.
• We can create LabVIEW programs connecting functional blocks or virtual instruments. 
• A VI has a front panel and a block diagram.

5. What is SubVI?

SubVI is a part of a LabVIEW virtual instrument or MainVI. Sometimes, an entire VI can be used as a SubVI in applications.

6. What are the key advantages of SubVIs?

SubVIs provide the following advantages.

• Improves code organisation through modularity.
• Improves readability by replacing clusters of block diagram elements.
• Enhances performance through code reusability.
• Simplifies maintenance operations since the changes you make in a subVI will be reflected in all instances.

7. What are the two panels used in LabVIEW programming?

The Two panels used in the LabVIEW programming are:

• Front Panel: This is the user interface of the LabVIEW software. It has all the input and output components required for developing VIs.
• Block Diagram: This is where we will develop LabVIEW programs or Virtual instruments.

8. What are the key features of LabVIEW?

LabVIEW packs a lot of excellent features, which are listed below.

• It supports RS485, GPIB, RS232, VXI, PXI, and plug-in DAQ devices.
• It supports TCP/IP networking and ActiveX, so we can easily create executable applications and shared libraries.
• It offers easy interfacing hardware by using different drivers offered by NI.

9. What do you mean by dataflow programming in LabVIEW?

In LabVIEW, we create block diagrams that expose how data flows through all the nodes in a block diagram.

10. What are the datatypes that LabVIEW supports?

LabVIEW supports the data types below.

• Integers
• arrays
• boolean
• clusters
• character
• string

11. What are the common functions used in LabVIEW?

The common functions used in labVIEW are:

• Arithmetic operations
• Conditional structures (Case structures and Sequence structures)
• Comparisons
• Loops (‘For’ loops, ‘While’ loops)

12. What is the difference between LabVIEW's local and global variables?

Local Variable	Global Variable
A local variable is the one that can be found in a single VI	A global variable can be found in multiple VIs
We use a local variable to share data between different elements of a VI	We use a global variable to share data between various VIs.
They are used to make a connection with any control or indicator.	They pass and access data among several Virtual Instruments (VIs).
If we place a local variable in a block diagram panel, we will see a question mark symbol at the top end of it.	The global variable looks like a question mark with a globe symbol in a block diagram.
It makes debugging easier.	It makes debugging hard

 

Related article: Local and Global Variables in LabVIEW

13. What are the advantages of LabVIEW?

LabVIEW provides the following key advantages.

• Graphical User Interface (Gui)
• Rapid Prototyping and Development
• Data Acquisition and Instrument Control
• Parallel Processing and Multi-Threading
• Integration with Hardware and Software
• Cross-Platform Compatibility
• Hierarchical and Modular Design
• Enhanced Scalability and Flexibility
• Robust Visualisation Capabilities 

14. What is a State Machine in LabVIEW?

A state machine is one of the fundamental architectures used by LabVIEW developers to build applications. It has nodes for writing mathematical expressions and formulas, similar to text-based coding.

15. What is LabVIEW SignalExpress?

LabVIEW SignalExpress is the newest feature of the National Instruments LabView family. It extends LabView's acquisition, analysis, and presentation capabilities to applications that do not require programming.

16. What is the difference between the CIN and CALL libraries in LabVIEW?

CIN in LabVIEW is used to call external c-functions, whereas CALL library is used to call the DLLs.

17. What are the error handling methods used in LabVIEW?

The following are the different error-handling methods:

• Automatic Error Handling
• Using Error Clusters
• Conditional Error Handling
• Using Error Handling VIs
• Using User-Defined Error Codes
• Automatic Error Propagation
• Using the Try-Catch Mechanism

18. What are the different loops used in LabVIEW?

‘For’ loop and ‘while’ loop are used extensively in LabVIEW. Let's take a brief look at them now.

• For Loop – It supports executing a set of codes several times. For every iteration, the count is evaluated for the next run.
• While Loop – It supports executing a set of codes repeatedly until a specific condition is met. For every iteration, the condition is evaluated for the next run.

19. What is a State Chart in LabVIEW?

A state chart in LabVIEW graphically displays the states and transitions of a state machine. It has three components: states, transitions, and actions.

• States:  It represents the behaviour of a system, such as processing, idle, etc.
• Actions: These are actions related to a state. They include initialising variables, reading inputs, and delivering outputs.
• Transitions: They show the changes in a system from one state to another using arrows.

Good! You have completed learning the basic-level LabVIEW interview Q&A. This foundational knowledge will help you explore the critical aspects of LabVIEW in the following sections.

LabVIEW Interview Questions for Intermediate

This section contains the crucial LabVIEW interview Q&A, which will significantly enhance your knowledge of LabVIEW.

Let’s go over them!

20. What is the difference between a control and an indicator in LabVIEW?

Control	Indicator
Control is an input component. We use a LabVIEW control to enter inputs in a VI.	An indicator is an output component. It displays the results generated by a VI.
Controls have data terminals on the right side of the block diagram	Indicators have data terminals on the left side.
Control is a user-interactive LabVIEW component.	It is non-interactive; we can only view the results in indicators.
Knob, sliders, buttons, dial, and toggle switches are some of the examples of controls.	Graph and LED are a few examples of indicators.

21. How are shift registers used in LabVIEW?

Shift Registers in LabVIEW transfer data from previous iterations to the next iteration.

22. How will you perform static code analysis on LabVIEW VIs?

We can perform static code analysis on VIs in the following ways.

• Using built-in labVIEW tools like VI analyser and Profiler
• Using third-party tools like VeriStand, G Code analyser, and labVIEW style checker.
• Using labview tools network (VIPM)
• Automated testing with labview unit test framework
• Leveraging best practices in design and code structure

23. How do you implement state machines using state charts?

• Create a new state chart using the state chart module of LabVIEW.
• Add states in the statechart editor,
• Add transitions between the states,
• Define actions for every state, like entering a state and exiting a state,
• Define every event that triggers transitions between states
• State machines to examine transitions between states and events.

24. Does LabVIEW integrate with any third-party packages? If yes, what are they?

Yes, LabVIEW integrates with many third-party packages. Jotted down are some of them.

• Matlab
• MS Excel
• MS word
• Solidworks
• Adobe PDF
• Simulink
• Keil
• ORCAD PSpice

25. Is it possible to interface LabVIEW with JAVA GUI?

Yes, we can interface LabVIEW with JAVA GUI. However, we must follow the below steps.

• Firstly, TCP/IP enables communication between Java and LabVIEW.
• Then, build DLL from your LabVIEW code and call it using JNI.
• Implement a web service using LabVIEW and call it using Java.

26. What files can you use apart from .txt as input in LabVIEW?

LabVIEW can read data from different file types, including:

• CSV
• Binary
• xls/xlsx
• LVM
• TDMS
• XML

27. How can you use cloud services such as AWS and Azure to exchange data in LabVIEW?

We can connect AWS and Azure with LabVIEW using:

1. MQTT protocol to connect AWS IOT core and Azure IOT Hub with LabVIEW
2. AWS and Azure RESTful APIs
3. LabVIEW’s cloud toolkit
4. Cloud SDKs such as AWS SDK and Azure SDK

28. How can you modulate (AM) any sound or voice files on LabVIEW?

LabVIEW can read sound files directly from your sound card to your computer and open audio files. To achieve this, we need to use the ‘MT modulate AM’ function available in the modulation toolkit of LabVIEW.

29. Does LabVIEW support AI/ML models for data integration?

Yes, LabVIEW supports AI/ML models for data integration. It offers an add-on called the 'LabVIEW analytics and machine learning toolkit'. This toolkit allows us to train AI/ML models within the LabVIEW environment and seamlessly perform advanced data analysis and pattern recognition. 

30. What security best practices must you adopt to secure VI files?

The best practices are:

• Run the VI files coming from trusted sources.
• Examine the VI files downloaded from the internet and received through emails.
• Leverage LabVIEW’s source control tool to share VI files securely with multiple users. 

Run VI files from a safe location, which can be the following:

• Protected Windows directory
• Directory where access permissions are controlled

If we want to examine a VI, we can follow the below procedure.

• First, create a blank project
• Add the VI file that we want to test as a subVI
• Examine the SubVI’s code line by line.

31. How does LabVIEW execute version control of programs?

• First, we need to choose the version control software such as Git or SVN
• Install a version control software so on your machine
• Integrate the version control software with LabVIEW
• Create a new repository and add files to it
• After that, we can commit and track changes, perform branching and merging, and so on.

32. Can you use the Biomedical and Spectral Measurement Toolkit for LabVIEW?

Yes, we can easily use the Biomedical and Spectral Measurement Toolkit for LabVIEW. The only requirement is that the toolkit's version be compatible with the LabVIEW platform.

33. How can you make a waveform chart in LabVIEW?

To build a waveform chart in LabView, we must include the arrays in a cluster and then use an XY Graph.

34. What LabVIEW platforms/versions support web services?

The National Instruments introduced support for web services in its LabVIEW Real-Time Targets and LabVIEW 8.6 for Windows platforms.

• The web services runtime engine in 2009 and 8.6 is loaded and run using LabVIEW’s built-in web server.
• The web server is also available on Linux and Macintosh versions of LabVIEW but does not have web support.

35. How can you add MySQL functionality in LabVIEW?

We can easily use the Database Connectivity Toolkit to add MySQL functionality to LabVIEW.

36. How can you remotely invoke a web service from G-based applications?

We can easily invoke web services in LabVIEW by using the LabVIEW HTTP Client API.

37. How to get a column selected by default for a multicolumn list box in a LabVIEW VI?

We can wire a numeric constant to the multicolumn Listbox.

38. Can you build a 32-bit version executable from the LabVIEW 64-bit application builder?

Currently, the LabView 64-bit application builder does not provide a facility for creating a 32-bit version of an executable.

39. Can LabVIEW read Excel data continuously from ETAP Software?

Yes, labVIEW can read Excel data from ETAP continuously. We must follow the below methods to achieve that.

• Exporting ETAP data to Excel
• Using ActiveX automation
• Using the report generation toolkit for MS Office
• Using DataSocket for real-time data communication
• Applying polling method to read Excel data.

40. How can you improve LabVIEW's performance?

We can follow the strategies below to improve LabVIEW's performance.

• Minimise the loops and unnecessary iterations in programs to increase the execution speed.
• Use shift registers effectively to prevent unnecessary data operations
• Reducing the use of dynamic data types and increasing the use of arrays, clusters and strings
• Avoiding unnecessary controls and indicators
• Minimising memory allocation and applying parallel processing methods
• Use SubVIs extensively and simplify code flow.
• Reducing the frequency of I/O operations and using DMA for large data transfers
• Employ the performance profiler and utilise the execution trace toolkit

Well! You have completed learning the critical LabVIEW interview Q&A with sharp answers. It will help you face tough questions in interviews and impress your interviewers.

LabVIEW Interview Questions for Experienced

This section covers the challenging interview questions with elaborate answers. Learning these questions will elevate your LabVIEW knowledge to new heights.

Let’s move forward!

41. Can you perform real-time image and video compression using the LabVIEW-FPGA module in LabVIEW?

Using the LabVIEW-FPGA module, we can perform real-time image and video compression. We must write the VHDL code, compile it, and load it into the FPGA.

42. How do you generate two digital output channels from one PWM signal in LabVIEW, one for the heater and the other for the cooler?

The relay’s NO and NC contacts can easily be used for the cooler and heater. However, if we don’t want either warming or cooling, we must prepare a code for it.

43. Describe timing and synchronisation in LabVIEW.

LabVIEW’s timing and synchronisation features greatly help developers to control the execution of programs.

Timing in LabVIEW

• LabVIEW provides the wait (ms) and wait until the next ms multiple functions to pause program execution for a specified time.
• It provides Tick Count (ms) and Get Date/Time in seconds to measure the time between events.

Synchronisation in LabVIEW

• When multiple tasks or hardware devices are involved, synchronisation ensures all tasks begin simultaneously. For example, synchronisation allows data to be acquired from multiple sensors simultaneously.
• LabVIEW uses hardware triggers to enable synchronisation in devices such as function generators, oscilloscopes, etc.
• LabVIEW's timed loops are used to schedule tasks precisely on real-time systems.

44. How will you configure DAQ devices in LabVIEW?

We can use MAX and DAQ Assistant to configure DAQ devices and instruments.

We can use MAX to configure the following items:

• VI-DAQ virtual channels
• VISA resource names
• IVI logical names
• Field point I/O points

We can use DAQ assistant to configure the following items.

• Tasks
• Scales
• Global channels

45. What is the role of RTOS in LabVIEW?

RTOS, or Real-Time Operating System, is a special OS used in LabVIEW's real-time module. It supports the creation of highly reliable and precise applications.

RTOS in LabVIEW provides the following advantages:

• RTOS supports developers to prioritise tasks, especially running the time-sensitive tasks first
• It helps develop data acquisition, industrial automation, and motion control systems.
• It enables precise program execution by managing resources efficiently

46. Explain about the LabVIEW FPGA Module.

The LabVIEW FPGA module helps design complex systems. It provides a robust IDE, a high-fidelity simulator, IP libraries, and debugging features.

Moreover, this module has many built-in signal-processing routines and supports integrating with HDL codes and third-party IPs.

Using the FPGA module, we can create embedded FPGA VI to define custom hardware for the following applications.

• Digital protocol communication
• Rapid control prototyping
• Hardware in the loop simulation

47. How to debug a complex VI in LabVIEW?

We can debug a complex VI in the following ways.

• Breaking down the complex VI into manageable subVIs
• Using the probes tool to inspect variable values in a block diagram
• Setting breakpoints at problematic areas in a block diagram
• Adopting ‘single-step’ functionality in the debugger to enable line-by-line code execution
• Leveraging a logging tool to track the flow of execution
• Setting up the 'watch expressions' feature to monitor specific variables and expressions throughout the execution.

48. What are the advantages of using case structures in LabVIEW over a series of if statements?

• By changing the data type of the selection terminal, we can create if-else and switch statements.
• Case structures support different data types, including integers and strings.
• They allow developers to control the flow of their programs.   

49. How can you resolve file space issues when working with the LabView Test System using the CompactDAQ Controller?

This issue arises because of processing a large volume of test data or logging data for a long time.

We can resolve this issue using the following strategies. 

• Reducing data logging frequency 
• Using compressed file formats
• Implementing circular buffers to overwrite old data
• Automating data storage to network or external storage
• Cleaning files and deleting temporary data regularly 
• Adopting file naming and versioning
• Optimising cDAQ storage by removing unused files
• Applying edge processing and event-triggering.

50. What is the Code Width of an input signal, and how can you calculate it in LabVIEW?

The device range and resolution of a measurement device showcase the smallest detectable change, which is the code width of the input signal.

A smaller code width will result in precise measurements, and the formula makes it easy to measure it.

51. What types of VIs in LabVIEW dont have block diagrams?

The following Virtual Instruments in the LabVIEW don’t have block diagrams. 

• Primitive VIs
• Compiled subVIs
• Control and indicator VIs
• Built-in VIs and VI Server
• Express VIs

52. Which LabVIEW Add-Ons, Drivers, and Toolkits are available for the LabView 64-bit version?

• The LabView 64-bit doesn’t support all the toolkits supported by the LabView 32-bit.
• The support also varies according to the operating system:
• We need to verify all the details related to the LabView Add-Ons, Drivers, and Toolkits for each operating system.

53. Can you run a VI written with LabVIEW 32-bit on LabView 64-bit and vice-versa?

Yes, we can quickly run your VI written for our LabView 32-bit development system in our LabView 64-bit system and vice versa. That's because the code is not compiled until we run the VI.

54. Can you create PWM signals in LabVIEW to control the speed of an induction motor?

Yes, we can create PWM signals in labview to control induction motors. The step-by-step procedure below will help you for the same.

• Set up the hardware and install drivers like DAQmx.
• Generate a PWM signal using the ‘DAQmx create channel.’
• Control the motor speed by adjusting the PWM duty cycle

55. How can you programmatically build and deploy any web service?

We can quickly build and deploy web services by using:

• The project tree
• a VI offered by LabVIEW

LabVIEW offers Google APIs for opening projects and their members. The invoke node allows us to open a project programmatically. Moreover, the property node will enable us to access the targets defined in a project.

LabVIEW offers VIs capable of creating a build specification defined on every target. The invoke node provides many methods for deploying the build specifications. Furthermore, libraries included in a project can also be deployed through an invoke node using the 'Deploy Library' function defined in the application class.

Related article: LabVIEW Programming

56. How can you transfer data from Python to LabVIEW?

We can use a Command-Line Interface (CLI) to send the desired information from an existing Python script into LabVIEW code. Alternatively, we can use LabVIEW to execute a Python script and receive feedback using a command-line interface tool.

57. How will you change a default recording device using LabVIEW?

The following methods will help you with the same.

• Integrating labview with Windows OS through system exec functions or Windows API calls.
• Automating the control of the Windows sound settings using labview scripting.
• Using third-party libraries such as labview audio API
• Using labview sound and vibration toolkit.

58. How do you implement the N-dimensional nested loop in LabVIEW?

A recursive VI makes implementing the N-dimensional nested loop in LabVIEW easy. It pulls out the array's 0 indexes and loops over the min/max/delta of element 0.

59. Can you run LabVIEW on IOS or Android operating systems?

No, we cannot run LabVIEW on mobile devices. The software doesn’t support iOS and Android operating systems, so we cannot develop or deploy LabVIEW applications on mobile devices.

However, we can use mobile devices as an interface to visualise LabVIEW data. We can also use webVIs to control the applications running on host machines. To create webVIs, we must use the G web development software.

60. Explain the Microservices architecture patterns in LabVIEW.

• API-based Microservices: LabVIEW supports MQTT (message queuing telemetry protocol), which enables real-time data exchange between LabVIEW services.
• Edge-driven microservices: we can use LabVIEW’s event structure to subscribe and manage events within an application
• Containerised LabVIEW microservices: we can package a LabVIEW application into a container using the Docker tool.
• Microservices with data streaming: LabVIEW supports real-time data streaming, which allows sensor data to be streamed to various Microservices for analysis.

Cheers! You have completed learning the high-level LabVIEW interview questions. No matter how hard the LabVIEW interviews are, this knowledge will help you crack them effortlessly. 

Scenario-Based Questions

This section provides some scenario-based questions. It includes challenges that you may face while working on your LabVIEW projects and how to resolve them efficiently.

Let’s face the challenges!

1. Change the control value in mainvi in real-time to update the control value in subVI.

Consider the scenario where your program has a subVI. You have used a numeric control in the subVI to send inputs. The subVI exists inside an event structure that is triggered when a button is pressed. You have a control in the main VI, which is wired with the subVI control. So, subVI gets input value through the mainVI.

The problem is that you can't update the control values in the main VI when the program is running. However, the program responds when you change the control values in the subVI.

How do inputs pass through the main VI while the program is running?

Solution:

There are two ways to resolve this issue.

1. Instead of using control values, we can pass a reference to the subVI and update the values using the value property node.
2. LabVIEW’s value (signalling) property can generate a value change event in the main VI.         

2. Writing waveform data into CSV file in LabVIEW

Consider the following scenario: You have a LabVIEW program with voltage, current, and power data in the same waveform. You need to extract all these data and form an array. You have extracted only the voltage waveform and converted the data into a CSV file.

The problem is that the time stamp and the ‘y’ value exist in the same cell of the CSV file. It demands post-processing in the Excel sheet to get the tab-delimited format. However, the requirement is that you get the delimited format without post-processing.

How will you overcome this issue?

Solution:

Suppose our VI uses the tab as the default delimiter. However, Excel only processes comma-delimited CSV files. We can resolve this problem by using the comma as the delimiter.

3. LabVIEW to .csv: data in the header line.

Consider the scenario where you have a pre-built VI and need to make some adjustments to complete a set of tasks. The image below shows the pre-built VI.

The VI has a write-to-text file function inside the loop with the % format and the delimiter. When you open the .csv file, the headings and the first data line appear in the same row.

Assume you used the /r and /r/n new line delimiters and double commas to resolve this problem, but they didnt help. How can you move the first line of data to the next row without changing the setup blocks?

Solution:

Generally, the write-to-text file function writes a string or array of strings as lines to a file. If we use an array of strings as input, the function writes each string as a separate line in the file. The end-of-line characters are used to separate the lines.

If we give an input with a single string, there can’t be any end-of-line character. We can resolve this issue in the following three ways.

• We need to build your string into a single-element string array. Then, the write-to-text file function will add the end-of-line characters.
• We can press ‘return’ at the end of the text using our string constant.
• We can use the ‘concatenate strings’ function to add an end-of-line constant to our string.

We hope these scenario-based questions have significantly increased your proficiency in LabVIEW software.

LabVIEW Interview Tips

Let's go through some interview tips that will help clear your LabVIEW interviews.

• Gain sound technical expertise in LabVIEW by learning various blogs, tutorials, and guides.
• Practice a variety of sample LabVIEW projects, gaining strong hands-on skills.
• Keep yourself updated with the latest trends in LabVIEW programming and application development.
• Prepare a robust portfolio including all your skills, project samples, experience, etc.
• Communicate clearly with interviewers, and don't miss the chance to demonstrate your hard and soft skills.
• At the end of the interview, ask valuable and meaningful questions to the interviewers.

Frequently Asked LabVIEW Interview Questions

1. What are the different LabVIEW job roles?

• LabVIEW Engineer
• LabVIEW Developer
• LabVIEW test engineer
• LabVIEW Application Engineer
• LabVIEW Architect

2. What is the salary for LabVIEW developers in India?

According to AmbitionBox's report, entry-level LabVIEW developers in India can earn between 4 LPA and 10 LPA. Talent.com says that in the USA, LabVIEW developers can earn a salary of 95k USD to 156k USD.

3. What are the companies recruiting LabVIEW professionals?

According to AmbitionBox, companies like HCLTech, Bosch, infinity automation, etc., recruit LabVIEW professionals for high salaries.

4. Is LabVIEW suitable for real-time applications?

Yes, LabVIEW supports real-time applications. Its real-time module performs operations in time-sensitive applications. LabVIEW’s real-time capabilities are used in robotics, embedded systems, industrial automation, and many other domains.

5. Can I use LabVIEW to control hardware?

Yes, you can use LabVIEW to control hardware devices. LabVIEW supports communication protocols such as USB, GPIB, PCI, and Ethernet to connect with measurement devices, sensors and actuators.

6. Can LabVIEW be used to program a PLC?

No, you cannot program a PLC by using LabVIEW. However, you can read and write your PLC code using a LabVIEW application.

7. What are the various LabVIEW certification exams?

Following are the certification exams offered by LabVIEW.

• Certified LabVIEW Associate Developer – CLAD
• Certified LabVIEW Embedded Systems Developer - CLED
• Certified LabVIEW Developer – CLD
• Certified LabVIEW Architect – CLA
• Certified TestStand Architect – CTA
• Certified TestStand Developer – CTD 

Conclusion

Well! We hope these LabVIEW interview questions and answers have provided you with a comprehensive knowledge of LabVIEW concepts and programming. We are sure that this blog has enhanced your confidence in facing your LabVIEW interviews.

If you want to sharpen your skills further in LabVIEW, you can join the LabVIEW training in MindMajix. Upon completing the training, you will become an expert in LabVIEW tools and get interview-ready.

All the best!