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Measurement and Instrumentation

Measurement and Instrumentation
Null type recorders are

 bridge recorders.
 any one of the above.
 LVDT recorders.
 potentiometric recorders.

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Measurement and Instrumentation
Which of the following devices may be used for extending the range of instruments?

Current transformers
Shunt
All of the listed here
Potential transformers

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Measurement and Instrumentation
Purely mechanical instrument cannot be used for dynamic measurements because they have

 higher response time.
 high inertia.
All of these
 large time constant.

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Measurement and Instrumentation
Schering bridge is used to measure which of the following?

 Inductance.
 Resistance.
  Capacitance.
 Frequency.

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Measurement and Instrumentation
The maximum percentage error in the sum of two voltage measurements when V1 = 100V ± 1% and V2 = 80V ± 5% is

 ± 2.8%
 ± 3%
 ± 6%
 ± 4%

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Measurement and Instrumentation
Systematic errors are

All of these
 environmental errors.
 instrument errors.
 observational errors.

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