1. In alternating current circuits, the instantaneous power _____ Varies Continuously Remain Stationary Varies for a Fixed amount of Time Any of the above 2. An electric iron designed for 110 V AC supply was rated at 500 W. It was put across a 220 V supply. Assuming that at 110 V it supplied …
AC Power Measurement MCQ || Measurement of AC Power MCQ Questions and Answers Read More »
1. The DC power can be measured by using ______ Ammeter Only Voltmeter Only Both Ammeter and Voltmeter None of the above 2. What is the power loss in the 10 Ω resistor in the Network shown in the figure? 15.31 W 14.9 W 12.3 W 13.2 W 3. The error Caused by …
Measurement of DC Power MCQ || DC Power measurement Questions and Answers Read More »
1. Wattmeter cannot be designed on the principle of Electrostatic instrument Thermocouple instrument Moving iron instrument Electrodynamic instrument 2. Two wattmeter method is used for measurement of power in a balanced three-phase load supplied from a balanced three-phase system. If one of the wattmeters reads half of the other (both positive), then the power factor of the …
Blondel’s Theorem MCQ || Blondel’s Theorem Questions and Answers Read More »
1. Wattmeter cannot be designed on the principle of Electrostatic instrument Thermocouple instrument Moving iron instrument Electrodynamic instrument 2. Two wattmeter method is used for the measurement of power in a balanced three-phase load supplied from a balanced three-phase system. If one of the wattmeters reads half of the other (both positive), then the power factor of …
1. Two wattmeters are used to measure the power in a 3-phase balanced system. What is the power factor of the load when one wattmeter reads twice the other? 0 0.5 0.866 1 2. Two wattmeter method is used for the measurement of power in a balanced three-phase load supplied from a balanced three-phase …
1. Two wattmeters are used to measure the power in a 3-phase balanced system. What is the power factor of the load when one wattmeter reads twice the other? 0 0.5 0.866 1 2. Two wattmeter method is used for the measurement of power in a balanced three-phase load supplied from a balanced three-phase …
Polyphase Power Measurement MCQ || Measurement of Polyphase Power Questions and Answers Read More »
1. The low power factor wattmeter is used to measure Low value of power Factor Only High Value of Power Factor Only Both low value and High Value None of the above 2. In an ordinary dynamometer, the deflecting torque is _________ Small Medium Large Very large 3. In Low Power Factor Wattmeter …
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 …
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 …
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