1. Pressure coil of a wattmeter has ________ Capacitance and inductance Inductance and resistance Resistance and capacitance Only inductance 2. Find the self-inductance (in mH) of the pressure coil if a dynamometer wattmeter measures power in 50 Hz, single-phase circuit without error, at all power factors the resistance of voltage coil and its series …
1. A dynamometer wattmeter is almost universally used for the measurement of _______ AC Power Only DC Power Only Both AC and DC Power Frequency 2. In A.C. circuits, power consumed is ________ Product of voltage and current It depends on the p.f. of the circuit in addition to voltage and current It depends …
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1. A wattmeter is used to measure _____ Active Power Reactive Power Apparent Power Any of the above 2. An induction wattmeter can be used for Both DC and AC DC only AC only None of these 3. For balanced lagging power factor, according to two wattmeter method, W1 = VL IL cos (30 – ϕ) …
Measurement of Power MCQ || Measurement of Power Questions and Answers Read More »
1. A wattmeter is used to measure _____ Active Power Reactive Power Apparent Power Any of the above 2. An induction wattmeter can be used for Both DC and AC DC only AC only None of these 3. For balanced lagging power factor, according to two wattmeter method, W1 = VL IL cos (30 – ϕ) …
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1. The Potentiometer is generally used to measure _______ Velocity Speed Displacement Power 2. What should be the size of the slide wire of the potentiometer to make it achieve high accuracy? As long as possible As short as possible 1 meter Neither too thin nor too thick 3. Standardization of potentiometer is …
1. An ammeter is connected in ________ with the circuit. Parallel Series Both parallel and series None of the above 2. A moving coil instrument has full-scale deflection at 50 mV and 10 mA. The value of shunt resistance required to be connected to convert it into a (0-5A) ammeter is: 0.005 Ω 0.01 …
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1. The basic d’Arsonval movement can be converted into a DC voltmeter with the addition of _____ Parallel Resistance Series Resistance Series Parallel Resistance Series Capacitance 2. A 2-milliampere meter movement with a coil resistance of 1000 ohms. When 2 milliamperes are flowing through the meter coil and are causing FSD, what will be …
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1. Loading effect is caused due to ______ of the voltmeter. Low Capacitance High Inductance Low Sensitivity High Sensitivity 2. To minimize the loading effect of the circuit under test, the input impedance of the device must: Be very high Be capacitive Be very low Match with the input impedance of the circuit …
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1. Low voltage signals in Electronic Voltmeter can be measured by ______ Amplifiers Transformers Transducers Voltmeters 2. What will be the reading of the voltmeter in the given figure? 100 V 150 V 0 V 50 V 3. Input impedance of an electronic voltmeter is ________ Low High Medium Zero 4. A …
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Measurement and Instrumentation Error MCQ 1. Which of the following is caused by careless handling? Systematic error Gross error Random error None of the mentioned 2. A meter reads 125 V and the true value of the voltage is 125.5 V. Find the static error of the instrument. 125/0.5 V 125 V 0.5 …
