Electrical Measurement MCQ

1. _______  used as standard wattmeter for the purpose of calibration in various testing laboratories. Suspended coil torsion head wattmeters Pivoted coil direct indicating wattmeters Ferrodynamic wattmeters Low power factor wattmeters   2. To reduce the eddy current errors in suspended coil torsion head wattmeters _______ is used. Stranded Conductors Non-metallic parts Both 1 and …

Types of Wattmeter MCQ || Types of Wattmeter Questions and Answers Read More »

1. Induction-type wattmeter instruments are used for _______ AC Measurement DC Measurement AC and DC Measurement None of the above   2. The two laminated iron-core electromagnets are _____ Shunt Magnets Series Magnets Shunt and Series Magnets Bar Magnets   3. The disc of the Induction type wattmeter is made up of _____ Copper Aluminum …

Induction Wattmeter MCQ || Induction Type Wattmeter Questions and Answers Read More »

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 …

Wattmeter Reactive Power Measurement MCQ || Measurement of 3 Phase Reactive Power Using Wattmeter Questions and Answers Read More »

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 …

Power Measurement using Two Wattmeter MCQ || Measurement of 3 Phase Power Using two Wattmeter Questions and Answers Read More »

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 …

Low Power Factor Wattmeter MCQ [Free PDF] – Objective Question Answer for Low Power Factor Wattmeter Quiz 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 …

Method of Connection Errors MCQ || Errors Due To Method of Connection in Measurement and Instrumentation MCQ Read More »