Measurement and Instrumentation To measure the flux, devices used are based on Voltaic effect Photo-voltaic effect Hall effect Piezo-electric effect Voltaic effect Photo-voltaic effect Hall effect Piezo-electric effect ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is 2 mA. 3 mA. 1 mA. 4 mA. 2 mA. 3 mA. 1 mA. 4 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A wheatstone bridge cannot be used for precision measurements because errors are introduced into on account of Contact resistance. Resistance of connecting leads. All of above. Thermoelectric emfs. Contact resistance. Resistance of connecting leads. All of above. Thermoelectric emfs. ANSWER DOWNLOAD EXAMIANS APP
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 18.2 rpm. 12.8 rpm. 16.02 rpm. 21.1 rpm. 18.2 rpm. 12.8 rpm. 16.02 rpm. 21.1 rpm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A set of independent current measurements taken by four observers was recorded as : 117.02 mA, 117.11 mA, 117.08 mA and 117.03 mA. What is the range of error ? ± 0.065 ± 0.045 ± 0.054 ± 0.056 ± 0.065 ± 0.045 ± 0.054 ± 0.056 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The chemical effect of current is used in None of these C. energy meter C. ammeter hour meter C. ammeter None of these C. energy meter C. ammeter hour meter C. ammeter ANSWER DOWNLOAD EXAMIANS APP
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