Vibration Analyst Interview Questions and Answers

To approach misalignment problems, a combination of field observations and software analysis is used.

• In the field, visually inspect the equipment for signs of misalignment such as excessive vibration, unusual noise, or wear patterns.

• Measure and record the alignment parameters using precision tools like dial indicators or laser alignment systems.

• Analyze the collected data using vibration analysis software to identify the severity and type of misalignment.

• Utilize software featu...read more

To approach looseness and unbalance in the same machine, first identify the symptoms, then perform vibration analysis and inspection.

• Identify symptoms of both looseness and unbalance, such as excessive vibration, noise, or irregular operation.

• Perform vibration analysis to determine the severity and frequency of the vibrations.

• Inspect the machine for any visible signs of looseness, such as loose bolts or fittings.

• Check for unbalance by measuring the weight distribution of rota...read more

Bearing fault frequencies can be both synchronous and non-synchronous.

• Synchronous fault frequencies are directly related to the rotational speed of the bearing or its components.

• Non-synchronous fault frequencies are caused by other factors such as misalignment, imbalance, or resonance.

• Examples of synchronous fault frequencies include the outer race fault frequency (BPFO) and the inner race fault frequency (BPFI).

• Examples of non-synchronous fault frequencies include the cage f...read more

The maximum weight and length of the fan I balanced varied depending on the specific project requirements.

• The maximum weight of the fan I balanced was 500 pounds.

• The maximum length of the fan I balanced was 6 feet.

• The weight and length of the fan can vary based on the specific application and industry.

• I have experience balancing fans ranging from small industrial fans to large HVAC fans.

Amplitude modulation is a technique used to vary the amplitude of a carrier signal in accordance with the amplitude of a modulating signal.

• Amplitude modulation involves combining a high-frequency carrier signal with a lower-frequency modulating signal.

• The amplitude of the carrier signal is varied in proportion to the amplitude of the modulating signal.

• This modulation technique is commonly used in radio and television broadcasting.

• Amplitude modulation allows for the transmissi...read more