Preview Questions NVH Engineer | Role Specific Skill

Question 1: During a road noise test, which parameter is most critical for evaluating the impact of tire noise on overall vehicle NVH performance?

Which action should you take?

Choose only one option

Sound Pressure Level (SPL)

Reverberation Time

Decibel Level

Frequency Weighting

Question 2: How does vibration isolation in the vehicle's cabin impact NVH testing results?

Which action should you take?

Choose only one option

It makes testing results unreliable

It amplifies the vibrations inside the cabin

It reduces the transmission of vibrations, allowing for a clearer measurement of noise and vibrations from external sources

It has no impact on NVH results

Question 3: How do you perform a cross-check of sensor data in NVH testing to ensure data accuracy?

Which action should you take?

Choose only one option

By ignoring sensor calibration and relying on visual checks

By relying on only one sensor to avoid confusion

By testing the sensors without comparing them to any reference data

By comparing data from multiple sensors measuring the same physical phenomenon and analyzing discrepancies

Question 4: How do you assess the subjective response to vehicle noise using a "just noticeable difference" (JND) method?

Which action should you take?

Choose only one option

By measuring the vehicle's speed and power output

By conducting a vibration analysis

By calculating the total sound energy emitted by the vehicle

By measuring the smallest change in sound pressure that a listener can perceive and correlating it with subjective comfort

Question 5: In vibration analysis, what is the purpose of a fast Fourier transform (FFT)?

Which action should you take?

Choose only one option

To convert time-domain data into frequency-domain data for identifying vibration modes

To measure the total vibration energy of a system

To determine the damping ratio of a vibrating component

To isolate specific vibration frequencies in the system

Question 6: What is the purpose of conducting a baseline NVH test before modifying any vehicle components?

Which action should you take?

Choose only one option

To assess only engine noise levels

To measure only the maximum sound pressure levels

To determine the weight of the vehicle's components

To establish reference data that allows for accurate comparison after modifications