Measurement and Instrumentation Ratio of readings of two wattmeter connected to measure power in a balanced 3-phase load is 5:3 and the load is inductive. The power factor at load is 0.6 lag. 0.6 lead. 0.917 lead. 0.917 lag. 0.6 lag. 0.6 lead. 0.917 lead. 0.917 lag. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the land? 0.73 1 0.65 0.84 0.73 1 0.65 0.84 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A pressure measurement instrument is calibrated between 10 bar and 260 bar. The scale span of the instrument is 270 bar. 250 bar. 10 bar. 260 bar. 270 bar. 250 bar. 10 bar. 260 bar. 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. 114.6 μH/radian. 12.0 μH/radian. 2.0 μH/radian. 4.8 μH/radian. 114.6 μH/radian. 12.0 μH/radian. 2.0 μH/radian. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The meter constant of an energy meter is 1500 rev/kWh, the disc makes 3000 revolution in a given time. The energy consumed is 2 kWh 1 kWh 4 kWh 3 kWh 2 kWh 1 kWh 4 kWh 3 kWh ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The terminals across the source are ______________________________ if a current source is to be neglected. short circuited replaced by a source resistance open circuited replaced by a capacitor short circuited replaced by a source resistance open circuited replaced by a capacitor ANSWER DOWNLOAD EXAMIANS APP
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