Preview Questions NVH Engineer | Role Specific Skill

Question 1: Why is calibration of the tachometer important when testing engine vibrations in automotive applications?

Which action should you take?

Choose only one option

To measure the exhaust pressure at different speeds

To calculate the torque generated by the engine

To ensure accurate measurement of engine speed and synchronize vibration data with engine RPM

To evaluate the heat dissipation of the engine

Question 2: What is the purpose of using "acoustic foam" in automotive interiors?

Which action should you take?

Choose only one option

To increase the strength and durability of the vehicle seats

To improve fuel efficiency by reducing the weight

To absorb sound and reduce unwanted reverberations in the cabin

To reflect sound waves away from the vehicle

Question 3: In NVH testing, how does the calibration of a phase microphone array differ from that of a single-point microphone?

Which action should you take?

Choose only one option

It does not require calibration if used in an array

It relies solely on amplitude calibration

It only requires frequency calibration

It requires calibration at multiple spatial locations to account for directional sensitivity

Question 4: How is the "sharpness" of an automotive sound quantified, and why is it important in sound quality analysis?

Which action should you take?

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Sharpness is unrelated to the vehicle's performance

Sharpness quantifies the perception of high-frequency content and is used to assess discomfort or irritation caused by certain sounds

Sharpness quantifies the amount of vibration in the suspension

Sharpness measures only low-frequency noise

Question 5: In NVH testing, what is the main purpose of using a shaker exciter?

Which action should you take?

Choose only one option

To amplify existing vibrations in the vehicle

To generate controlled vibrations for assessing component response

To isolate the vehicle from external vibrations

To measure the ambient noise levels

Question 6: How does the concept of "tonal balance" contribute to sound quality analysis in automotive applications?

Which action should you take?

Choose only one option

It calculates the amplitude modulation in sound frequencies

It determines the energy lost to acoustic damping

It isolates the most prominent frequencies for noise cancellation

It ensures that no frequency range overpowers others, maintaining a balanced and harmonious sound profile