Answers

2016-02-20T17:53:41+05:30
We cant measure because ac is in the form of sin and cos values where as dc can be measured in an ordinary ammeter
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2016-02-22T01:17:51+05:30
Generally ordinary ammeter consists of PMMC (Permanent magnet moving coil ) instruments which can measure dc values only. For ac values we use digital instruments. Hope my answer clear your doubt...
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