Measurement and Instrumentation Some wire- wound resistors have bifilar winding. This type of winding is used to Reduce the tolerance Increase the thermal stability Reduce the inductance of winding Double the power rating of the resistor Reduce the tolerance Increase the thermal stability Reduce the inductance of winding Double the power rating of the resistor ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Most sensitive galvanometer is Elastic galvanometer Spot ballastic galvanometer Duddle galvanometer Vibration galvanometer Elastic galvanometer Spot ballastic galvanometer Duddle galvanometer Vibration galvanometer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The measurment of very low and very high frequencies is invariably done using a frequency counter in which one of the following? Period measurment modes only. Frequency measurment modes only. Period and frequency measurement modes respectively. Frequency and period measurment modes, respectively. Period measurment modes only. Frequency measurment modes only. Period and frequency measurement modes respectively. Frequency and period measurment modes, respectively. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For handling greater currents induction watt-meters are used in conjunction with Potential transformers Current transformers Either of the above Power transformers Potential transformers Current transformers Either of the above Power transformers ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The inductance of a certain moving iron ammeter is expressed as L = 2+5θ-θ2 µH. The control spring torque is 2 × 10-6 Nm/radian. Find the deflection in radians for a current of 2A. 5 1 4 2 5 1 4 2 ANSWER DOWNLOAD EXAMIANS APP
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 of Y phase Reactive power of R phase Active power in R phase Power proportional to 3 phase power if the load is balanced Active power of Y phase Reactive power of R phase Active power in R phase ANSWER DOWNLOAD EXAMIANS APP
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