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 16.02 rpm. 18.2 rpm. 12.8 rpm. 21.1 rpm. 16.02 rpm. 18.2 rpm. 12.8 rpm. 21.1 rpm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving iron ammeter produces a full scale torque of 240 μNm with a deflection of 120° at a current of 10 A. The rate of change of self induction (μH/radian) of the instrument at full scale is 4.8 μH/radian. 2.0 μH/radian. 114.6 μH/radian. 12.0 μH/radian. 4.8 μH/radian. 2.0 μH/radian. 114.6 μH/radian. 12.0 μH/radian. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation When the pointer of an indicating instrument comes to rest in the final deflected position, ______ Only controlling torque acts None of the listed here Only deflecting torque acts Both deflecting and controlling torques act Only controlling torque acts None of the listed here Only deflecting torque acts Both deflecting and controlling torques act ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation What is the expression for acceleration? Mass x velocity Force x displacement Mass x acceleration Change in velocity / time Mass x velocity Force x displacement Mass x acceleration Change in velocity / time ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In a gravity controlled instrument, the deflection angle is proportional Sine inverse of measurand Square of the measurand Sine of the measurand Measurand Sine inverse of measurand Square of the measurand Sine of the measurand Measurand ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The thermocouple instruments do not have Absence of frequency error High degree of measuring accuracy Independence of ambient temperature High sensitivity Absence of frequency error High degree of measuring accuracy Independence of ambient temperature High sensitivity ANSWER DOWNLOAD EXAMIANS APP
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