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Measurement and Instrumentation

Measurement and Instrumentation
Jewels are used in instruments for the purpose of

Suppressing noise
Bearing
Torque control
Damping

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Measurement and Instrumentation
Relative error is same as

 ratio of absolute error and true value.
 true error.
 absolute error.
None of these

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Measurement and Instrumentation
The limiting errors of measurement of power consumed by and the current passing through a resistance are ±1.5% and ±1% respectively. What is the limiting error ( in %) of measurement of resistance ?

 ±3.5%
 ± 1%
 ± 2.5%
 ± 1.5%

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Measurement and Instrumentation
Some wire- wound resistors have bifilar winding. This type of winding is used to

Increase the thermal stability
Reduce the tolerance
Double the power rating of the resistor
Reduce the inductance of winding

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Measurement and Instrumentation
A metal strain gauge has a gauge factor of two. Its nominal resistance is 120 ohms. If it undergoes a strain of 10-5, the value of change of resistance in response to the strain is

 120 Ohm.
 240 Ohm.
 0.0012 Ohm.
 0.0024 Ohm.

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Measurement and Instrumentation
When checked with an ohm meter an open resistor reads

  low but not zero.
  zero.
  high but within tolerance.
  infinite.

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MORE MCQ ON Measurement and Instrumentation

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