A resistance is measured by the voltmeter-ammeter method employing dc excitation and a voltmeter of very high resistance connected directly across the unknown resistance. If the voltmeter and ammeter reading are subject to maximum possible errors of ± 2.4 % and ± 1.0 % respectively, then the magnitude of the maximum possible percentage error in the value of resistance deduced from the measurement is nearly

Measurement and Instrumentation
A resistance is measured by the voltmeter-ammeter method employing dc excitation and a voltmeter of very high resistance connected directly across the unknown resistance. If the voltmeter and ammeter reading are subject to maximum possible errors of ± 2.4 % and ± 1.0 % respectively, then the magnitude of the maximum possible percentage error in the value of resistance deduced from the measurement is nearly

± 1.4%

± 3.4%

± 2.4%

± 1%

± 1.4%

± 3.4%

± 2.4%

± 1%

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Measurement and Instrumentation
The expected value of the voltage across a resistor is 80 V, and the measured value is 79 V. What is the percentage error and relative accuracy of the measurement ?

1.5% & 98.75%

1.25% & 98.75%

1.25% & 98.25%

1.5% & 99%

1.5% & 98.75%

1.25% & 98.75%

1.25% & 98.25%

1.5% & 99%

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Measurement and Instrumentation
A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is postioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

1 Nm.

200 Nm.

2 Nm.

100 Nm.

1 Nm.

200 Nm.

2 Nm.

100 Nm.

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Measurement and Instrumentation
The use of __________________ instruments is merely confined within laboratories as standardizing instrument.

recording.

absolute.

integrating.

indicating.

recording.

absolute.

integrating.

indicating.

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Measurement and Instrumentation
Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit.

Both 1 and 2 are true.

1 is true but 2 is false.

1 is false but 2 is true.

Both 1 and 2 are false.

Both 1 and 2 are true.

1 is true but 2 is false.

1 is false but 2 is true.

Both 1 and 2 are false.

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Measurement and Instrumentation
An analog ammeter is

a recording instrument.

an indicating instrument.

a controlling instrument.

an absolute instrument.

a recording instrument.

an indicating instrument.

a controlling instrument.

an absolute instrument.

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Measurement and Instrumentation

Measurement and Instrumentation The expected value of the voltage across a resistor is 80 V, and the measured value is 79 V. What is the percentage error and relative accuracy of the measurement ?

Measurement and Instrumentation A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is postioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

Measurement and Instrumentation The use of __________________ instruments is merely confined within laboratories as standardizing instrument.

Measurement and Instrumentation An analog ammeter is

Measurement and Instrumentation
The expected value of the voltage across a resistor is 80 V, and the measured value is 79 V. What is the percentage error and relative accuracy of the measurement ?

Measurement and Instrumentation
A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is postioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

Measurement and Instrumentation
The use of __________________ instruments is merely confined within laboratories as standardizing instrument.

Measurement and Instrumentation
An analog ammeter is