Important Measuring Instruments Multiple Choice Questions and Answers

6. ....... is the commonly used material for thermocouples

   A.Platinum-rhodium

   B.Chromel-alumel

   C.Chromel-copal

   D.Any of the above

7. In measuring instruments a mirror is provided behind the pointer with a purpose that

   A.With the help of the mirror it may be seen whether the pointer is bent or not

   B.The scale is illuminated through the mirror

   C.Reading errors due to inclined observation are eliminated by removing parallax between the pointer and its image in the mirror

   D.Any of the above

8. The sensitivity inaccuracy of an instrument does not depend on

   A.Frequency response

   B.Hysteresis

   C.Amplitude distortion

   D.All of the above

9. The error, when reading at half-scale in an instrument, is

   A.Equal to half of full-scale error

   B.Equal to full-scale error

   C.Less than full-scale error

   D.Greater than full-scale error

10. An instrument's reliability means

   A.The extent to which the characteristics remain linear

   B.The life of the instrument

   C.The degree to which the repeatability continues to remain within specific limits

   D.All of the above

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