Calculating Motor Efficiency

A worked example showing how to apply our efficiency equation to a motor.

[gopipathuri]

Can we use inverter drives to increase efficiency

[thenarasuerusan]

Hi Sir,
my motor in the name plate is 5.5kw 415v 3ph, act eff= 0.89 (88.5%), rpm 2890, p.f-0.89, running load 7.6Amps.
Please use this details, this is the old motor 5 years, now want to know what is the current efficiency finding that wheter motor reduced efficiency.ple help me to find what is the frequency now and this very helpful to replace efficiency motor.Thanks if get answer from you that much appreciated.thanks

[samuelravpalli]

Hi Sir, may i know please how can we calculate in cng motor ...our motor is 160 kWh 215 hp motor it consumption of power is 35 kWh per hour

[ehabahmed]

The power of motor on nameplate
Is it a power in or power out ?

[nazmulhaquenahin]

Thanks a lot bro. your video helped me .

[blackmanops]

What about loss to vibration and sound? (I realize sound is a subset of vibration, but I would call it out since it is a separate sensory phenom). Or are you considering "heat" as a superset of vibration? If so, then why call out out friction and windage loss separately? Or is it that friction is the overall loss and everything else is just a particular form of friction? This is a serious question.

[aymanantoun]

Professor I would like to thank u so much
Fantastic video I greatly appreciate the great job
Very good explanation and easy to understand I just subscribed
At your website again thank you so much
I do have some questions could you please provide me an email address to ask you some questions if you don’t mind?
Let me know
Look forward to hearing from you
Thanks again

[senpaikaizen]

what is the efficiency if a 10HP motor draws 40A at 240V?