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– Real-world sensors often produce weak, noisy, or non-linear signals. Signal conditioning (amplifiers, filters, excitation) makes them suitable for the DAQ board. 14. Which of the following is NOT a typical component of a virtual instrumentation system? A) Computer with VI software B) DAQ hardware C) Physical front-panel hard keys (like a dedicated oscilloscope knob) D) Sensors/transducers
– A While Loop repeats its subdiagram indefinitely until the stop condition is met. It is essential for continuous data acquisition or monitoring. 8. In virtual instrumentation, what does “GPIB” (IEEE-488) primarily provide? A) Power supply to instruments B) A parallel communication bus for controlling external bench-top instruments (like oscilloscopes, DMMs) from a computer C) Wireless connectivity for sensors D) Analog signal routing virtual instrumentation mcq
1. What is the core philosophy of Virtual Instrumentation (VI)? A) To replace all hardware with software B) To use a general-purpose computer and software to create user-defined measurement and control systems C) To eliminate the need for analog-to-digital converters D) To exclusively use GPIB for instrument control
– The user interface is virtual (on the computer screen). While some systems may include custom control panels, physical hard keys are not a requirement or typical core component. 15. The “Dataflow” programming model in LabVIEW implies that: A) All code runs in parallel by default B) The order of execution is determined by the physical wiring of data between nodes, not by a sequential text-based order C) Data flows only from left to right D) Errors are ignored Would you like an answer key or further
– GPIB (General Purpose Interface Bus) is used to connect and control multiple traditional programmable instruments from a single PC controller. 9. Which of the following is a major advantage of virtual instrumentation over traditional instrumentation? A) Lower initial cost for every application B) Fixed and unchangeable functionality C) User-defined signal processing, analysis, and reporting D) Requires proprietary hardware for each measurement
– VI’s key advantage is flexibility. The user can implement custom algorithms, data logging, automated test sequences, and remote monitoring – things fixed traditional instruments cannot do easily. 10. What does “DAQ” stand for in virtual instrumentation? A) Digital Analog Quantization B) Data Acquisition C) Direct Access Query D) Device Automatic Qualification It is essential for continuous data acquisition or
– The Front Panel is the interactive user interface (knobs, graphs, buttons). The Block Diagram is the graphical code that controls the program’s logic. 5. What is the primary role of a Data Acquisition (DAQ) board in a virtual instrumentation system? A) To amplify signals indefinitely B) To connect the computer to the internet C) To convert physical analog signals (e.g., voltage, temperature) into digital data for the computer, and vice versa D) To replace the need for any sensors
– In a traditional instrument, functions are fixed by the manufacturer. In a VI, the software defines the processing, analysis, and display; the hardware (DAQ) only interfaces with the real world. 3. Which software platform is most commonly associated with Virtual Instrumentation? A) MATLAB B) LabVIEW (Laboratory Virtual Instrument Engineering Workbench) C) Python with PyVISA D) C++
– Data Acquisition refers to the process of sampling real-world physical signals and converting them into digital numeric values. 11. In LabVIEW, a “Shift Register” on a loop is used to: A) Shift bits in a binary number B) Pass data from one loop iteration to the next (e.g., store previous value) C) Register a shift in the user interface D) Change the loop’s iteration count