You are a plant engineer and your task is to perform vibration analysis and identify the problem in the electrical machinery at your plant.

The vibration curves are taken periodically for a Squirrel cage Induction Motor from one of the machines with rating of $3$ phase, $5$ HP$,415$ V$,50$ Hz$,1440$ rpm$,28$ bar rotor, $36$ stator slots. The following vibration curves are recorded.

$1)$ Healthy motor FFT taken in first month for no load, half load and full load conditions.

$2)$ FFT taken After $5$ months during one rotor bar failure for no load, half load and full load conditions.

FFT taken After $10$ months during two rotor bar failure for no load, half load and full load conditionsAll the test curves are labeled below as A$,$ B$,$ C etc. Your task is to analyse and identify all the FFT spectrum below $(1$ to $9)$ and assign the correct label $($A$,$B$,$C etc$)$ to them.$$

$$ i$.$ Identify the healthy motor no load FFT spectrum

$$ ii$.$ Identify the healthy motor half load FFT spectrum

$$ iii.$$ Identify the healthy motor full load FFT spectrum

$$ iv$.$ Identify FFT spectrum of the motor one broken rotor bars running under no load condition

$$ v$.$ Identify FFT spectrum of the motor one broken rotor bars running under half load condition

$$ vi$.$ Identify FFT spectrum of the motor one broken rotor bars running under full load condition

$$ vii.$$ Identify FFT spectrum of the motor two broken rotor bars running under no load condition

$$viii$.$ Identify FFT spectrum of the motor two broken rotor bars running under half load condition

$$ ix$.$ Identify FFT spectrum of the motor two broken rotor bars running under full load condition