Measurement and Instrumentation The effect of stray magnetic fields on the actuating torque of a portable instrument is maximum when the operating field of the instrument and stray fields are inclined at 60o. parallel. perpendicular. inclined at 30o. inclined at 60o. parallel. perpendicular. inclined at 30o. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be 0.67 A. 0.25 A. 0.50 A. 0.70 A. 0.67 A. 0.25 A. 0.50 A. 0.70 A. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation 0-150 V voltmeter has an accuracy of 1% of full-scale reading. The voltage measured by the instrument is 75 V. The limiting error is 4% 3% 2% 1% 4% 3% 2% 1% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In a dynamometer wattmeter, the moving coil is the Potential coil Current coil and potential coil Current coil None of the listed here Potential coil Current coil and potential coil Current coil None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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 2V. 2√2V. √2V. Zero. 2V. 2√2V. √2V. Zero. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Wagner earthing device is used to eliminate errors due to Both A and B Electromagnetic coupling None of these Electrostatic coupling Both A and B Electromagnetic coupling None of these Electrostatic coupling ANSWER DOWNLOAD EXAMIANS APP
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