Its appropriate when the group 2 grow to be group 1 as they know or have seen what they say.
But as such it wouldn't be often possible for an engineer to manage and an operator to engineer.
Normally in plants, the Engineers wont be the same engineers who built the plant, but would be efficient...
Each Phase are different by 120 degree. If you choose the third phase to be between any other two,nthe phase difference remains only 60 degree difference, hence reducing the RMS voltage. So you should use the delta connection to generate the third phase.
Generaly, VFDs or Variable frequency drives has an in built load.
In VFDs the power from the source is converted into high voltage DC, through switching rectifiers.
The efficiency of the No Load or standby power consumption is in the efficiency of this process.
Once you have the spec of the...
Simple answer would be a servo motor.
With this you can control direction of rotation, speed of rotation and position.
You can program this according to your requirement.
Please go through Seimens Servo motor series.
Other companies such as ABB, Philips also has these. Used especially in...
