Measurement and Instrumentation A high frequency AC signal is applied to a PMMC instrument. The RMS value of the AC signal is 2V, the reading of the instrument is 2√2V. Zero. √2V. 2V. 2√2V. Zero. √2V. 2V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following are integrating instruments? Wattmeters Voltmeters Ammeters Ampere hour and watt hour meters Wattmeters Voltmeters Ammeters Ampere hour and watt hour meters ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit. 1 is true but 2 is false. Both 1 and 2 are true. 1 is false but 2 is true. Both 1 and 2 are false. 1 is true but 2 is false. Both 1 and 2 are true. 1 is false but 2 is true. Both 1 and 2 are false. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Ratio of readings of two wattmeter connected to measure power in a balanced 3-phase load is 5:3 and the load is inductive. The power factor at load is 0.6 lag. 0.917 lead. 0.917 lag. 0.6 lead. 0.6 lag. 0.917 lead. 0.917 lag. 0.6 lead. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Basically potential meter is a device for Measuring a current Comparing two voltages Measuring a voltage Comparing two currents Measuring a current Comparing two voltages Measuring a voltage Comparing two currents ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For handling greater currents induction watt-meters are used in conjunction with Power transformers Either of the above Potential transformers Current transformers Power transformers Either of the above Potential transformers Current transformers ANSWER DOWNLOAD EXAMIANS APP
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