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Answer Posted / himanshu singh
AC stands for alternating current.It has frequency in it.It
flows in single,dual or 3 phase as per requirement.Thus it
has phase and neutral i.e return...also it has pulses and
follows sine graph.
Where as DC stands for Direct Current.It has zero frequency
and has one positive and one negative.Infact Dc is much
powerful than AC.
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OBJECTIVE TYPE QUESTIONS OF ANALYTICAL INSTRUMENTATION
Sir,I am going to sit for IOCL written test exam. recently.Can anyone tell me the name of 'Objective type Question Book on Instrumentation Engineering ' which will help me. Pl. mail to bidyut_71@rediffmail.com / bidyut.saha2008@indiatimes.com / bidyut.saha09@yahoo.in
