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 114.6 μH/radian. 4.8 μH/radian. 12.0 μH/radian. 2.0 μH/radian. 114.6 μH/radian. 4.8 μH/radian. 12.0 μH/radian. 2.0 μH/radian. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be 250 V. 248 V. 260 V. 252 V. 250 V. 248 V. 260 V. 252 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The material of the shunt should have _______ temperature co-efficient of resistance. Negative Negligible None of the listed here Positive Negative Negligible None of the listed here Positive ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A ______ device prevents the oscillation of the moving statem and enables the latter to reach its final position quickly Deflecting None of the listed here Damping Controlling Deflecting None of the listed here Damping Controlling ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving iron ammeter may be compensated for frequency errors by Shunt capacitance Series resistance A shunt resistance A series inductance Shunt capacitance Series resistance A shunt resistance A series inductance ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A first order instrument is characterized by Time constant only Static sensitivity and damping coefficient Static sensitivity, damping coefficient and natural frequency of oscillations Static sensitivity and time constant Time constant only Static sensitivity and damping coefficient Static sensitivity, damping coefficient and natural frequency of oscillations Static sensitivity and time constant ANSWER DOWNLOAD EXAMIANS APP
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