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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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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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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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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