Measurement and Instrumentation The problem of Electrostatic coupling in a transformer is acute at High load on the transformer Low frequencies High frequencies Power frequencies High load on the transformer Low frequencies High frequencies Power frequencies ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation To measure 5 volts, if one selects a 0-100 volt range voltmeter which is accurate with in ± 1%, then the error in this measurement may be up to ± 1.5% ± 2.5% ± 20% ± 7.5 % ± 1.5% ± 2.5% ± 20% ± 7.5 % ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In induction type ammeter, _____ damping is provided. Fluid friction Air friction None of the listed here Eaddy current Fluid friction Air friction None of the listed here Eaddy current ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A megger is usually Moving coil type instrument Electro-static type instrument Hot-wire type instrument Moving iron type instrument Moving coil type instrument Electro-static type instrument Hot-wire type instrument Moving iron type instrument 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 2 4 5 1 2 4 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Some wire- wound resistors have bifilar winding. This type of winding is used to Reduce the tolerance Reduce the inductance of winding Increase the thermal stability Double the power rating of the resistor Reduce the tolerance Reduce the inductance of winding Increase the thermal stability Double the power rating of the resistor ANSWER DOWNLOAD EXAMIANS APP
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