Important Measuring Instruments Multiple Choice Questions and Answers


1. ....... type instrument has identical calibration for A.C. as well as D.C. values


   A.Hot wire

   B.Moving coil

   C.Induction

   D.Moving iron


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A.Hot wire

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2. ...... type instrument can have full scale deflection of 300 degrees


   A.Induction

   B.Rectifier

   C.Hot wire

   D.None of the above


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A.Induction

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3. Hot wire instruments read


   A.Average value

   B.r.m.s. value

   C.Peak value

   D.None of the above


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B.r.m.s. value

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4. Which of the following instruments can be used for measuring 132 kV A.C. voltage


   A.Electrostatic voltmeter

   B.Hot wire voltmeter

   C.Moving coil voltmeter

   D.Moving iron voltmeter


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A.Electrostatic voltmeter

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5. In ....... instruments the deflecting torque depends on the frequency


   A.Induction type

   B.Hot wire

   C.Moving coil

   D.Moving iron


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A.Induction type

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