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. 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 …
Wattmeter Error MCQ || Error in Wattmeter Questions and Answers Read More »
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 …
Dynamometer Type Wattmeter MCQ || Dynamometer Type Wattmeter 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) …
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 …
DC Ammeter MCQ || Basic DC Ammeter Questions and Answers Read More »
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 …
Voltmeter Loading Effect MCQ || Loading Effect in Voltmeter Questions and Answers Read More »
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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