Important Measuring Instruments Multiple Choice Questions and Answers


16. Dead time of the instrument is


   A.The time required by an instrument to begin to respond to a change in the measurand

   B.The time required by an instrument for initial warming up

   C.The largest change of input quantity for which there is no output of the instrument

   D.None of the above


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B.The time required by an instrument for initial warming up

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17. In electrical measuring instruments electrical energy is converted to


   A.Mechanical energy

   B.Heat energy

   C.Chemical energy

   D.Light energy


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A.Mechanical energy

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18. Torque weight ratio will be least in ....... instruments


   A.Dymamometer

   B.Moving iron

   C.Moving coil

   D.All above


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A.Dymamometer

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19. Vibrating reeds are used in which of the following instruments


   A.Power factor meter

   B.Frequency factor meter

   C.Wattmeter

   D.Synchronoscope


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B.Frequency factor meter

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20. Scale of an instrument will be uniform if


   A.Deflecting torque varies directly as the deflection angle

   B.Control torque varies directly as the deflection angle

   C.Both (a) and (b)

   D.Damping torque varies directly as the deflection angle


✔ View Answer


C.Both (a) and (b)

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