Measurement and Instrumentation Which of the following meter is most suitable for measuring radio frequency currents? VTVM. Thermocouple meter. Moving - coil meter. Moving - iron meter. VTVM. Thermocouple meter. Moving - coil meter. Moving - iron meter. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A resistance is measured by the voltmeter-ammeter method employing dc excitation and a voltmeter of very high resistance connected directly across the unknown resistance. If the voltmeter and ammeter reading are subject to maximum possible errors of ± 2.4 % and ± 1.0 % respectively, then the magnitude of the maximum possible percentage error in the value of resistance deduced from the measurement is nearly ± 3.4% ± 2.4% ± 1.4% ± 1% ± 3.4% ± 2.4% ± 1.4% ± 1% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The measurment of very low and very high frequencies is invariably done using a frequency counter in which one of the following? Period and frequency measurement modes respectively. Frequency measurment modes only. Frequency and period measurment modes, respectively. Period measurment modes only. Period and frequency measurement modes respectively. Frequency measurment modes only. Frequency and period measurment modes, respectively. Period measurment modes only. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving coil ammeter has a uniform scale with 50 division and gives a full scale reading 10 A. The instrument can read up to (1/5)th of a scale division with a fair degree of certainty. What is the resolution of the instrument in mA? 80 mA. 25 mA. 50 mA. 40 mA. 80 mA. 25 mA. 50 mA. 40 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The errors introduced by an instrument fall in which category ? Random errors Systematic errors Environmental errors Gross errors Random errors Systematic errors Environmental errors Gross errors ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The electrical power to a megger is provided by Permanent magnet dc generator Any of the listed here Ac generator Battery Permanent magnet dc generator Any of the listed here Ac generator Battery ANSWER DOWNLOAD EXAMIANS APP
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