Preview Questions NVH Engineer | Role Specific Skill

Question 1: In the design of automotive windshields, what feature is primarily incorporated to reduce wind noise?

Which action should you take?

Choose only one option

Adding decorative patterns to the glass

Using laminated glass with acoustic interlayers

Tinting the glass

Increasing the thickness of the windshield

Question 2: In the context of automotive sound quality, what is "flutter echo," and how can it be mitigated?

Which action should you take?

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High-frequency noise from electronics; mitigated by shielding

Broadband cabin noise; mitigated by improving insulation

A type of engine noise; mitigated by better engine mounts

Repeating echo due to parallel surfaces; mitigated by adding sound-absorbing materials or diffusers

Question 3: In NVH testing, what does the term "coincidence frequency" refer to?

Which action should you take?

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The frequency at which structural resonances occur

The frequency at which the wavelength of sound matches the natural frequency of a structure, leading to increased vibration

The peak frequency of tire noise

The frequency of engine harmonics

Question 4: During the calibration of a microphone for cabin noise measurements, which parameter is most critical to ensure accurate frequency response?

Which action should you take?

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Impedance

Dynamic Range

Directionality

Sensitivity

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

Which action should you take?

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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: In NVH testing, what is the primary difference between "rattle" and "buzz" noises?

Which action should you take?

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There is no significant difference

Rattle is caused by loose parts, while buzz is caused by structural resonances

Rattle occurs only in suspension systems, while buzz occurs in the engine

Rattle is high-frequency, while buzz is low-frequency