Preview Questions NVH Engineer | Role Specific Skill

Question 1: What is the primary challenge associated with using active noise control (ANC) in automotive applications compared to passive noise reduction methods?

Which action should you take?

Choose only one option

Increased weight and space requirements

Limited frequency range for noise cancellation

Higher implementation costs and complexity

Lower effectiveness in reducing noise levels

Question 2: In NVH testing, how does one ensure that the accelerometer is calibrated for multi-axis vibration measurement?

Which action should you take?

Choose only one option

By verifying the signal strength from each axis using a time-domain analyzer

By recalibrating the system after each test cycle

By compensating for temperature variations in the sensor's readings

By adjusting the sensor's output based on known vibration amplitudes along each axis

Question 3: What is the main purpose of using correlation techniques in NVH data analysis?

Which action should you take?

Choose only one option

To calibrate measurement equipment

To filter out unwanted frequencies

To compare vibration data from different tests or locations and identify common sources

To enhance the signal-to-noise ratio

Question 4: When using "composite materials" for noise reduction in automotive applications, what is the primary benefit?

Which action should you take?

Choose only one option

They combine the advantages of multiple materials to optimize sound absorption and structural integrity

They increase the overall strength of the vehicle body

They enhance the fuel efficiency of the vehicle

They are cheaper to produce and easier to manufacture

Question 5: How do you measure and analyze the effect of resonance on automotive components during NVH testing?

Which action should you take?

Choose only one option

By ignoring resonance and focusing solely on noise reduction

By measuring only the lowest frequency without testing resonance

By increasing the component's weight to avoid resonance

By conducting a sweep test across a range of frequencies to identify resonance peaks and adjust the design accordingly

Question 6: What is the primary purpose of using a calibrated shaker table in automotive NVH testing?

Which action should you take?

Choose only one option

To isolate the vehicle from external vibrations

To measure sound pressure levels

To record vibration data from sensors

To generate controlled vibration inputs for component testing