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Measurement and Instrumentation

Measurement and Instrumentation
Relative error is same as

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

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Measurement and Instrumentation
The three resistors R1, R2 and R3 have the following ratings: R1 = 25Ω ± 4%, R2 = 65 Ω ± 4%; R3 =45 Ω ± 4%. If the resistance are connected in series, then limiting error produced in equivalent resistance is

 3%
 1%
 4%
 2%

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Measurement and Instrumentation
The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. If this meter is to have full deflection at 5A, what is the value of the shunt resistance to be used?

1 Ohm
1/49.99 ohms
2 Ohms
49.99 Ohms

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Measurement and Instrumentation
Consider the following statements : In a measuring instrument, 1. Linearity is more important than sensitivity. 2. High precision indicates high accuracy 3. Accuracy cannot be better than resolution. Of these statements

 2 and 3 are correct
 1 and 2 are correct
 1, 2 and 3 are correct
 1 and 3 are correct

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Measurement and Instrumentation
A megger is usually

Electro-static type instrument
Hot-wire type instrument
Moving coil type instrument
Moving iron type instrument

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Measurement and Instrumentation
The main advantage of Anderson bridge over Maxwell bridge is that

 balance equation independent of frequency.
  reduction of the cost.
 measures high Q inductors.
 attaining balance condition is easier.

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