Measurement and Instrumentation In figure Z1 = 200∠60° ohm. Z2 = 400∠-90° ohm, Z3 = 300∠0° ohm. Then Z4 for bridge to be balanced is 150∠30° ohm. 300∠90° ohm. 400∠-90° ohm. 600∠-150° ohm. 150∠30° ohm. 300∠90° ohm. 400∠-90° ohm. 600∠-150° ohm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The meter constant of an energy meter is 1500 rev/kWh, the disc makes 3000 revolution in a given time. The energy consumed is 1 kWh 4 kWh 2 kWh 3 kWh 1 kWh 4 kWh 2 kWh 3 kWh ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A 50 Hz bar primary CT has a secondary with 500 turns. The secondary supplies 5 A current into a purely resistive burden of 1Ω. The magnetizing ampere-turn is 200. The phase angle between the primary and secondary current is 85.4o. 4.6o. 94.6o. 175.4o. 85.4o. 4.6o. 94.6o. 175.4o. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The pointer of an indicating instrument should be Very light None of the listed here Very heavy Either light or heavy Very light None of the listed here Very heavy Either light or heavy ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A Lissajous pattern on an oscilloscope has 5 horinzontal tangencies and 2 vertical tangencies. The frequency of horizontal input is 100 Hz. The frequency of the vertical will be 500 Hz. 625 Hz. 400 Hz. 250 Hz. 500 Hz. 625 Hz. 400 Hz. 250 Hz. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation PMMC type instruments normally use Air friction damping Fluid friction damping Eddy current damping None of these Air friction damping Fluid friction damping Eddy current damping None of these ANSWER DOWNLOAD EXAMIANS APP
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