Electrical & Electronics Measurements Objective Questions
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Consider the following statements: In a measuring instrument, 1. Linearity is more important than sensitivity. 2. High precision indicates high accuracy 3. Accuracy cannot be better than resolution. Of these statements
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The ratio of change in output to the change in the input is called
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A first order instrument is characterized by
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Which of the quantity consists of unit as newtonsecond?
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Two capacitance, C_{1} = 150 ± 2.4µF and C_{2} = 120 ± 1.5 µF are connected in parallel. What is the limiting error of the resultant capacitance C (in µF) ?
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Which one of the following meters has maximum loading effect on the circuit under measurement ?
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A resistance is measured by the voltmeterammeter 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
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A 0  150 V voltmeter has a guarantees an accuracy of 1% of full scale reading. The voltage measured by this instrument is 75 V. What is the limiting error ?
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A transducer measures a range of 0 – 200 N force with a resolution of 0.15 percent of full scale. What is the smallest change which can be measured by this transducer?
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Which of the quantity consists of unit as Pascal ?
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The difference between the indicated value and the true value of a quantity is
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The limiting errors of measurement of power consumed by and the current passing through a resistance are ±1.5% and ±1% respectively. What is the limiting error ( in %) of measurement of resistance?
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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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The total current I = I_{1} + I_{2} in a circuit is measured as I_{1} = 150 ± 1A , I_{2} = 250 ± 2A, where the limits of error are as standard deviations. I is measured as
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To measure 5 volts, if one selects a 0100 volt range voltmeter which is accurate with in ± 1%, then the error in this measurement may be up to
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Which one of the following units is a fundamental unit?
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The total current I = I_{1} + I_{2} in a circuit is measured I_{1} = 150 ± 3A , I_{2} = 250 ± 4 A, where the limits of error are given as standard deviations. I is measured as
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The three resistors R_{1}, R_{2} and R_{3} have the following ratings: R_{1} = 25Ω ± 4%, R_{2} = 65 Ω ± 4%; R_{3} =45 Ω ± 4%. If the resistance are connected in series, then limiting error produced in equivalent resistance is
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Which of the quantity consists of SI unit as Candela?
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Assertion (A) : It is always desirable to take the reading of an indicating instrument very close to the full scale reading. Reason (R) : Accuracy of an indicating instrument is maximum at the full scale deflection and error increases as reading comes closer to the beginning of the scale.
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A set of independent current measurements taken by four observers was recorded as : 117.02 mA, 117.11 mA, 117.08 mA and 117.03 mA. What is the range of error ?
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A voltage of 2.70 V is being measured by an analog indicating instrument having a scale range of 0 – 5.0 V. If the instrument reads 2.65 V, then absolute error in measurement is
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To measures 5 volts, if one selects a 0100 volt range voltmeter which is accurate with in ± 1%, then the error in this measurement may be up to
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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?
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What is the name of physical quantities which are independent of each other?
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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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0150 V voltmeter has an accuracy of 1% of fullscale reading. The voltage measured by the instrument is 75 V. The limiting error is
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The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be
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A variable w is related to three other variables x, y and z as w = xy/z. The variables are measured with meters of accuracy ± 0.5% reading, ± 1% of full scale value and ± 1.5% reading. The actual readings of the three meters are 80, 20 and 50 with 100 being the full scale value for all three. The maximum uncertainty in the measurement of w will be
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Dynamic errors are caused by
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Take All Tests :
Electrical & Electronics Measurements Objective Questions – Set 1
Electrical & Electronics Measurements Objective Questions – Set 2
Electrical & Electronics Measurements Objective Questions – Set 3
Electrical & Electronics Measurements Objective Questions – Set 4
Electrical & Electronics Measurements Objective Questions – Set 5
Electrical & Electronics Measurements Objective Questions – Set 6