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The range can be increased by using which of the following instrument?

The range can be increased by using which of the following instrument? Correct Answer Current transformers

Instrument transformers:

Transformers used in conjunction with measuring instruments for measurement purposes are called instrument transformers. The actual measurements are done by the measuring instruments only.

Current transformer:

  • It is a device that is used for the transformation of current from a higher level to a low level and used for measurement of high alternating current in transmission line safely.
  • The current transformer increases the range of AC ammeter

 

​Potential transformer:

  • The Potential transformer is an instrument transformer used to step down the higher voltage to a lower safe voltage for the measurement of voltage.
  •  Potential transformer increases the range of AC voltmeter.

 

Important Points

  • A potential transformer needs to step down the high voltages i.e. the primary voltage is very high. So, the number of primary turns is always greater than the number of secondary turns.
  • A current transformer needs to step down the high currents i.e. the primary current is very high. So, the number of primary turns is always less than the number of secondary turns.

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