Important Measuring Instruments Multiple Choice Questions and Answers

26. Which of the following can be measured with the help of piezo-electric crystal

   A.Acceleration

   B.Temperature

   C.Velocity

   D.Flow

   E.None of the above

27. Which of the following can be measured by a hot wire anemometer

   A.Gass velocities

   B.Liquid discharges

   C.Very low pressures

   D.Pressure of gases

   E.None of the above

28. Relative permitlivity can be measured by ....... bridge

   A.Wheaststone

   B.Hay's

   C.Schering

   D.De santy

29. A Hall's effect pick up can be used for the measurement of

   A.Pressure

   B.Temperature change

   C.Relative humidity

   D.Magnetic flux

   E.None of the above

30. In optical pyrometer temperature is measured by

   A.Photocell principle

   B.Thermocouple effect

   C.Comparing the brightness of the source with the brightness of a standrad source

   D.None of the above

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