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Which of the following instruments have large scales for easy reading?

Which of the following instruments have large scales for easy reading? Correct Answer Vacuum-tube voltmeter (VTVM) and a FET-input multimeter

Vacuum tube voltmeter (VTVM) and a FET input multi meter have large scales for easy reading.

Vacuum Tube Voltmeter:

  • The voltmeter which uses the vacuum tube for amplifying the measuring AC and DC voltage is known as the vacuum tube voltmeter (VTM).
  • The vacuum tube increases the sensitivity of the voltmeter because of which it can detect the signal of very weak strength.

 

The Vacuum Tube Voltmeter is classified into the following types:

  • Diode Type
  • Peak Reading Diode Vacuum Tube Voltmeter
  • Single Triode
  • Balanced Triode Type
  • Rectifiers  Amplifier  Type
  • Amplifier Rectifier Type

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