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Measurements and Instrumentation

Q1:

If the secondary winding of CT is opened when primary coil is carrying current

A transformer will burn immediately

B there will be weak flux density in core

C there will be very high induced voltage in secondary

D there will be high current in secondary

ANS:C - there will be very high induced voltage in secondary

Since the primary of CT always remains excited, a high voltage is induced in secondary if the secondary is opened.



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