Red Seal Instrumentation and Control Technician Practice Exam

What is a common result of excessive noise in instrumentation systems?

1. Improved data collection

2. Detailed signal interpretation

3. Signal distortion and inaccuracies

4. Reduced maintenance costs

The correct answer is: Signal distortion and inaccuracies

Excessive noise in instrumentation systems can lead to signal distortion and inaccuracies, making it challenging to obtain reliable measurements. Noise can come from various sources, such as electrical interference, mechanical vibrations, or environmental factors. When noise is present, it can mask the actual signal, causing the equipment to misinterpret the data being collected. As a result, the output may reflect erroneous information rather than the true values being measured. This incorrect data can compromise decision-making processes that rely on accurate readings, adversely affecting system performance and safety. The other options do not align with the effects of excessive noise. For instance, improved data collection and detailed signal interpretation are outcomes that are typically seen in well-functioning systems with low noise levels. Additionally, reduced maintenance costs would generally come from increased system reliability rather than from noise, which often necessitates repairs or recalibrations due to faulty readings.