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Measurement and Instrumentation

Measurement and Instrumentation
The measured value of a resistance is 10.25 ohm, whereas its value of 10.22 ohm. What is absolute error of the measurement?

  0.03 ohm.
 10.26 ohm.
 15.36 ohm.
 0.01 ohm.

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Measurement and Instrumentation
The internal resistance of a milli-ammeter must be very low for

 minimum effect on the current in the circuit.
 high accuracy.
 high sensitivity.
 high precision.

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Measurement and Instrumentation
Standard resistor ia made from

Silver
Platinum
Nichrome
Manganin

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Measurement and Instrumentation
The internal resistance of Weston standard cell is of order of

 100 ohm.
 10 ohm.
 1000 ohm.
 1 ohm.

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Measurement and Instrumentation
Alternating current is measured by

Moving iron repulsion type voltmeter
Permanent magnet type ammeter
Electrostatic ammeter
Induction ammeter

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Measurement and Instrumentation
To measure high frequency currents, we mostly use ______ ammeter.

Thermocouple
Dynamometer
Moving iron
Hot wire

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