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Measurements and Instrumentation - Engineering

Q1:

Consider the following galvanometers
  1. D'Arsonval
  2. Ballistic
  3. Vibration
Which of these are permanent magnet moving coil instruments?

A 1 and 2 only

B 1, 2 and 3

C 2 and 3 only

D 1 and 3 only

ANS:B - 1, 2 and 3

Small current through coil deflects pointer of galvanometer.