Measurement and Instrumentation Commonly used instruments in power system measurement are Moving coil or iron Rectifier Induction Electrostatic Moving coil or iron Rectifier Induction Electrostatic ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In flux meter, the controlling torque is produced by weight attached to the moving coil. spring. not provided at all. crossed coil mechanism. weight attached to the moving coil. spring. not provided at all. crossed coil mechanism. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Two capacitance, C1 = 150 ± 2.4µF and C2 = 120 ± 1.5 µF are connected in parallel. What is the limiting error of the resultant capacitance C (in µF) ? 3.9µF 0.9µF 2.4µF 1.5µF 3.9µF 0.9µF 2.4µF 1.5µF ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In a wheatstone bridge, a change of 6 Ω in the unknown arm of bridge is required to produce a change in deflection of 2.4 mm of the galvanometer. The sensitivity is 2.5 mm/Ω 5.0 mm/Ω 0.8 mm/Ω 0.4 mm/Ω 2.5 mm/Ω 5.0 mm/Ω 0.8 mm/Ω 0.4 mm/Ω ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Kelvin’s double bridge is used to measure low resistance because resistance variation due to temperature. it has high sensitivity. there is no thermo electric emf. effect of contact and lead resistance is eliminated. resistance variation due to temperature. it has high sensitivity. there is no thermo electric emf. effect of contact and lead resistance is eliminated. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Instrument transformers are Power transformers Both current and potential transformers Pottential transformers Current transformers Power transformers Both current and potential transformers Pottential transformers Current transformers ANSWER DOWNLOAD EXAMIANS APP
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