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 Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit. 1 is true but 2 is false. Both 1 and 2 are true. Both 1 and 2 are false. 1 is false but 2 is true. 1 is true but 2 is false. Both 1 and 2 are true. Both 1 and 2 are false. 1 is false but 2 is true. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The disc of an instrument using eddy current damping should be of Conducting and non magnetic material None of the listed here Non conducting and magnetic material Conducting and magnetic material Conducting and non magnetic material None of the listed here Non conducting and magnetic material Conducting and magnetic material ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Standard resistor ia made from Manganin Platinum Nichrome Silver Manganin Platinum Nichrome Silver ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For measuring a very high resistance we should use Kelvin's double bridge None of the listed here Wheat stone bridge Megger Kelvin's double bridge None of the listed here Wheat stone bridge Megger ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is 1.5 V. 1 V. 1.34 V. 1.7 V. 1.5 V. 1 V. 1.34 V. 1.7 V. ANSWER DOWNLOAD EXAMIANS APP
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