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4 votes

Radar's radiation inside air traffic control tower

Details would be in the type or installation approval for your specific radar, but: negligible. Point is that it's both legally necessary to not expose humans to strong electromagnetic radiation, as ...
sina bala's user avatar
  • 492
1 vote

Phase shifting 2 waveforms to create a rotating magnetic field

Yes you are going to need additional equipment. You function generator has only a single output - you need at least 2 independent outputs on the function generator hence why there are no phase shift/...
MOSFET's user avatar
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5 votes

Would reducing the air gap between the rotor and stator to micrometer/nanometer scale distance proportionately increase a motor's power?

At some point the gap will no longer dominate the total reluctance of the magnetic circuit you you'll get diminishing returns. Otherwise you'd be approaching infinite torque with zero gap, which is ...
Spehro Pefhany's user avatar
9 votes
Accepted

Would reducing the air gap between the rotor and stator to micrometer/nanometer scale distance proportionately increase a motor's power?

For a constant field in the gap, the motor armature and running characteristics are independent of the size of the gap. However, to get that constant field, a wound motor needs excitation current more ...
Neil_UK's user avatar
  • 165k
6 votes

Would reducing the air gap between the rotor and stator to micrometer/nanometer scale distance proportionately increase a motor's power?

Reducing the air gap in a motor can only be taken up to a certain point. If the air-gap is too small there is a possibility that the rotor will hit the stator and, of course, this is to be avoided. ...
Andy aka's user avatar
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