Preview Questions NVH Engineer | Role Specific Skill

Question 1: How do you differentiate between sound pressure level (SPL) and sound quality in automotive NVH testing?

Which action should you take?

Choose only one option

SPL only refers to low-frequency noise, and sound quality refers to high-frequency noise

SPL and sound quality are the same

SPL quantifies the overall loudness, while sound quality considers characteristics like tone, texture, and pitch

SPL measures the amplitude, and sound quality measures engine vibrations

Question 2: How do you evaluate the impact of engine mount design on vehicle NVH behavior?

Which action should you take?

Choose only one option

By visually inspecting the mounts

By measuring exhaust noise and ignoring the engine mounts

By using only acoustic measurements without considering vibration

By measuring vibration transmission through the mounts under different operational conditions and assessing their effect on cabin noise

Question 3: How do you perform a sound intensity mapping test on a vehicle to identify noise hotspots?

Which action should you take?

Choose only one option

By measuring the overall decibel level inside the vehicle

By evaluating road conditions and speed

By using a frequency analyzer to detect low-frequency sounds

By using a sound intensity probe to measure the directional sound power at various locations on the vehicle's surface

Question 4: In automotive NVH testing, why is it important to regularly recalibrate measurement equipment such as accelerometers and microphones?

Which action should you take?

Choose only one option

To maintain measurement accuracy and reliability over time

To adjust for wear and tear of the equipment

To update the equipment firmware

To comply with legal regulations only

Question 5: What is the most common tool used for measuring the road noise level inside the cabin of a vehicle during NVH testing?

Which action should you take?

Choose only one option

A sound level meter

A vibration accelerometer

A displacement sensor

A strain gauge

Question 6: What is the purpose of a Fourier transform in NVH data analysis, and how is it used?

Which action should you take?

Choose only one option

It converts data into a time-only format for easier analysis

It converts time-domain data into frequency-domain data, allowing for the identification of specific noise and vibration frequencies

It amplifies the data to make it easier to measure

It filters out high-frequency noise for clearer analysis