Measurement and Instrumentation
Consider the following statements : In a measuring instrument, 1. Linearity is more important than sensitivity. 2. High precision indicates high accuracy 3. Accuracy cannot be better than resolution. Of these statements

 1 and 2 are correct
 2 and 3 are correct
 1, 2 and 3 are correct
 1 and 3 are correct

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Measurement and Instrumentation
Potentiometer method of DC voltage measurement is more accurate than direct measurement using a voltmeter because

 It uses centre zero galvanometer instead of voltmeter.
 It loads the circuit moderately.
  It does not load the circuit at all.
 It loads the circuit to maximum extent.

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