Measurement and Instrumentation To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken From a battery From a source which is not the same as the unknown voltage From the same source as the unknown voltage Any of the above From a battery From a source which is not the same as the unknown voltage From the same source as the unknown voltage Any of the above ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Standardization of potentiometer is done in order that, they become precise. accurate and precise. accurate. accurate and direct reading. precise. accurate and precise. accurate. accurate and direct reading. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A CRO can display AC signals DC signals Time invariant signals Both AC and DC signals AC signals DC signals Time invariant signals Both AC and DC signals ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Wagner earthing device is used to eliminate errors due to Electromagnetic coupling None of these Electrostatic coupling Both A and B Electromagnetic coupling None of these Electrostatic coupling Both A and B ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation If two 300V full scale voltmeters V1 and V2 having sensitivities of 100 kOhm/V and 150 kOhm/V are connected in series to measure 500V then V1 = 300V and V2 = 200V. V1 = 200V and V2 = 300V. V1 = 0V and V2 = 0V. V1 = 250V and V2 = 250V. V1 = 300V and V2 = 200V. V1 = 200V and V2 = 300V. V1 = 0V and V2 = 0V. V1 = 250V and V2 = 250V. ANSWER DOWNLOAD EXAMIANS APP
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. 400∠-90° ohm. 300∠90° ohm. 600∠-150° ohm. 150∠30° ohm. 400∠-90° ohm. 300∠90° ohm. 600∠-150° ohm. ANSWER DOWNLOAD EXAMIANS APP
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