EXAMIANS
In DC potentiometer measurments, a second reading is often taken after reversing the polarities of the DC supply and the unknown voltage and the average of the two reading is taken. This is with a view of eliminate the effects of
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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 ?
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A voltmeter has 100 scale divisions and can measure up to 100 V. Each division can be read to ½ division. The resolution of the voltmeter is
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Which of following voltmeters would you use for measuring voltage across 20KΩ resistance
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Which one the following statements is correct? The application of the instrument in wrong manner in the procedure of measurement results in a/an
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In a portable instrument , the controlling torque is provided by
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The power factor of a single phase load can be calculated if the instruments available are
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No eddy current and hysteresis losses occur in
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Most sensitive galvanometer is
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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.
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