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MCQ Practice Question
Measurements & InstrumentationAnalog Instruments

A PMMC instrument is primarily suitable for direct measurement of?

  • ADC only
  • BAC only
  • CBoth AC and DC without any additional circuit
  • DMicrowave frequency only
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Correct Answer: A. DC only
Explanation: A PMMC movement responds to the average value and reverses torque with current direction, so it is inherently suited to DC. AC measurement requires rectification.
Reference: Standard measurements and instrumentation: analog instruments
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