Impedance can be measured by using which of the following equipment?

This question was previously asked in
RRB ALP Electronics Mechanic 21 Jan 2019 Official Paper (Shift 3)
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  1. CRO
  2. LCR meter
  3. Function generator
  4. DSO

Answer (Detailed Solution Below)

Option 2 : LCR meter
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Detailed Solution

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LCR meter

  • An LCR meter is a type of electronic test equipment used to measure the inductance (L), capacitance (C), and resistance (R) of an electronic component.
  • The series combination of L, C, and R is known as the impedance.
  • It is used in radio and communication engineering and it can also be used to select a certain narrow range of frequencies from the total spectrum of ambient radio waves. 
  • The LCR meter measures current, voltage, and phase angle and calculates the corresponding LCR values which can be represented in a number of forms.

Additional Information Cathode Ray Oscilloscope (CRO)

  • CRO is a device that is used for the measurement of parameters of electrical quantities like frequency, amplitude, time period, and phase difference. 

Digital storage oscilloscope (DSO)

  • A digital storage oscilloscope (DSO) is an electronic instrument that measures and records electrical signals.
  • It converts the analog signal into a digital format and stores it in its digital memory.

Function generator

  • A function generator is a specific form of signal generator that is able to generate waveforms typically sine and square waves.

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