Can a moving coil galvanometer can be used to detect an A.C. in a circuit? Give reason.
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2 answers · Engineering
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The average value for AC is zero because that's how it's produced in an alternator because the machine is symmetrical with the rotor rotating in a magnetic field. I'm not even sure if it would be possible to make a non-zero average just with a misaligned alternator.
You could make AC with a DC offset easily enough with an electronic inverter, but the DC component would just heat up transformers without doing anything useful like transferring power to the secondary, so it would be pointless.
the pointer on the galvanometer would just vibrate at 60Hz or something, but too small a movement to read accurately. Unless it had a rectifier in front, which is what an analog multimeter has.
Best Answer
The average value for AC is zero because that's how it's produced in an alternator because the machine is symmetrical with the rotor rotating in a magnetic field. I'm not even sure if it would be possible to make a non-zero average just with a misaligned alternator.
You could make AC with a DC offset easily enough with an electronic inverter, but the DC component would just heat up transformers without doing anything useful like transferring power to the secondary, so it would be pointless.
the pointer on the galvanometer would just vibrate at 60Hz or something, but too small a movement to read accurately. Unless it had a rectifier in front, which is what an analog multimeter has.
Aisha1604:
Nice answer yaar
yaa...
hm
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