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Measurement and Instrumentation

Measurement and Instrumentation
A 1 mA meter is to be converted to 1 A ammeter. The meter resistance is 100 Ω. The value of shunt resistance

 0.001 Ω.
 100 Ω.
 0.1001 Ω.
 1000 Ω.

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Measurement and Instrumentation
The problem of Electrostatic coupling in a transformer is acute at

Power frequencies
High frequencies
Low frequencies
High load on the transformer

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Measurement and Instrumentation
A 0 - 200 V voltmeter has a guaranteed accuracy of 1% of full scale reading. The voltage measured by this instrument is 50 V. What is the limiting error?

 2%
 4%
 3%
 5%

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Measurement and Instrumentation
For the AC bridge circuit shown in figure at balance the value of Rd will be

 (Rc/Rb).Ra.
 (Rb/Rc).Ra.
 (Rc/Ra).Rb.
 (Ra/Rc).Rb.

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Measurement and Instrumentation
It is found that 10A current passes through a resistor of 10°hms. The resistor has 5% tolerance . The error in measurement of current can be as high as 5%. What is max error in measurement of power, calculated from measured value of I and the nominal value of resistor?

50W
200W
100W
150W

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Measurement and Instrumentation
In a CRO which of following is not a part of electron gun?

 Accelerating anode
 Grid
  X-Y plates
 Cathode

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