Measurement and Instrumentation The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures Power proportional to 3 phase power if the load is balanced Active power in R phase Reactive power of R phase Active power of Y phase Power proportional to 3 phase power if the load is balanced Active power in R phase Reactive power of R phase Active power of Y phase ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation When testing a coil having a resistance of 10 ohms, resonance occurred when the oscillator frequency was 10 MHz and rotating capacitor was set at 500/2π pF. The effective value of the Q of the coil is 20. 54.2. 31.4. 25.4. 20. 54.2. 31.4. 25.4. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Consider the following statements : In a measuring instrument, 1. Linearity is more important than sensitivity. 2. High precision indicates high accuracy 3. Accuracy cannot be better than resolution. Of these statements 1, 2 and 3 are correct 2 and 3 are correct 1 and 3 are correct 1 and 2 are correct 1, 2 and 3 are correct 2 and 3 are correct 1 and 3 are correct 1 and 2 are correct ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Magnetic deflection is inversely proportional to (Voltage)-0.5. (Voltage)2. Voltage. (Voltage)1.5. (Voltage)-0.5. (Voltage)2. Voltage. (Voltage)1.5. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For measurement of high direct voltage, one would use _____ voltmeter. Moving iron PMMC Hot wire Electrostatic Moving iron PMMC Hot wire Electrostatic ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation An oscilloscope indicates DC value of voltage Peak to peak value of voltage Average value RMS value DC value of voltage Peak to peak value of voltage Average value RMS value ANSWER DOWNLOAD EXAMIANS APP