Control springs of PMMC instrument can be used as Ballistic galvanometer

Q.  If the control springs of PMMC instrument is made up of large moment of inertia, then it can be used as
- Published on 14 Sep 15

a. Ammeter
b. Fluxmeter
c. Ballistic galvanometer
d. Wattmeter

ANSWER: Ballistic galvanometer

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