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Measurement and Instrumentation

Measurement and Instrumentation
In a gravity controlled instrument, the deflection angle is proportional

Sine inverse of measurand
Measurand
Square of the measurand
Sine of the measurand

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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 ?

 ± 1.5%
 ±3.5%
 ± 2.5%
 ± 1%

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Measurement and Instrumentation
A dynamometer wattmeter can be used for

Any of the listed here
DC only
Both DC and AC
AC only

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Measurement and Instrumentation
For measuring an AC voltage by an AC potentiometer it is desirable that the supply for the potentiometer is taken from

 The same source as the unknown voltage.
 Any of above.
 A battery.
 A source other than the source of unknown voltage.

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Measurement and Instrumentation
Which one the following statements is correct? The application of the instrument in wrong manner in the procedure of measurement results in a/an

 random error
 instrument error
 systematic error
 gross error

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Measurement and Instrumentation
A thermo couple ammeter gives full scale deflection of 10 A, when it reads one fifth of the scale, the current will be

 2 A.
 5.78 A.
 4 A.
  4.47 A.

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