Measurement and Instrumentation The meter constant of a single phase 240 V induction watthour meter is 400 revolutions per KWh. The speed of the meter disc for a current of 10 Amperes of 0.8 p.f lagging will be 21.1 rpm. 18.2 rpm. 16.02 rpm. 12.8 rpm. 21.1 rpm. 18.2 rpm. 16.02 rpm. 12.8 rpm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation ______ instruments are most sensitive. Permanent magnet moving coil Dynamometer Hot wire Moving iron Permanent magnet moving coil Dynamometer Hot wire Moving iron ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation It can be stated that No generalisation can be made with regard to the flux densities in CT and PT CT operates with considerably lower flux density than a PT CT operates with a higher flux density than PT CT operates at almost the same flux density as a PT No generalisation can be made with regard to the flux densities in CT and PT CT operates with considerably lower flux density than a PT CT operates with a higher flux density than PT CT operates at almost the same flux density as a PT ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A mulliammeter can be used as Ohmmeter Frequency meter Voltmeter and ammeter Wattmeter Ohmmeter Frequency meter Voltmeter and ammeter Wattmeter ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Induction type single phase energy meters measure electric energy in kWh kW Wh VAR kWh kW Wh VAR ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Why is a MISC meter not recommended for DC measurement? The meter is calibrated for AC and it’s error for DC would be high The error is high due to hysteresis effect The meter does not respond to DC signals The error is high due to eddy current effect The meter is calibrated for AC and it’s error for DC would be high The error is high due to hysteresis effect The meter does not respond to DC signals The error is high due to eddy current effect ANSWER DOWNLOAD EXAMIANS APP
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