How to check if my Ubuntu system is doing ok

I am a beginner in Ubuntu and using 18.04 with Nvidia GTx 1080Ti GPU… I am concerned because recently the fan inside my Dell Precision 7920 is being turned on frequently. Even when I am running one or two tabs in Google chrome or running some simple apps. Though I am not running any models in GPU but nvidia-smi gives me only 2~3% of GPU usage… and there is nothing significant I can find in system monitors… I have attached the image in the link. see the system monitor info here

I want to know if anything is wrong, please let me know how to proceed.
N.B.: my system has dual boot with windows 10, which I rarely use…