Question
Download Solution PDFDirections: It consists of two statements one labeled as statement I and the other as statements II. Examine these two statements carefully and select the correct answer using the code given below.
Statement I: A salient-pole rotor placed in a magnetic field can produce an emf. proportional to the speed of the rotating machine because of its variable reluctance characteristic.
Statement II: The above device is essentially a frequency tachometer using a suitable pulse shaping circuit and an electronic counter.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFA salient-pole rotor has variable reluctance characteristics. So, when it is placed in a magnetic field it can produce an emf. proportional to the speed of the rotating machine.
So, it can be used as a frequency tachometer using a suitable pulse shaping circuit and an electronic counter.
Therefore, both statements I and statement II are individually true and statement II is the correct explanation of statement I.Last updated on May 28, 2025
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