Which instrument is the cheapest disregarding the accuracy.
1). PMMC
2). Moving iron
3). Electrodynamometer
4). Rectifier
As torque/weight ratio is more in PMMC instruments, the accuracy is very high in these instruments. PMMC instruments are used in rectifier type instruments, hence these are also equally accurate.
Moving iron instruments has the least accuracy among all the given instruments.
The order of accuracy in descending order
PMMC > Electrodynamometer > Moving Iron2. The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it
3. An ideal crystal diode is one which behaves as a perfect ___________ when forward biased.
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