Measurement and Instrumentation The three resistors R1, R2 and R3 have the following ratings: R1 = 25Ω ± 4%, R2 = 65 Ω ± 4%; R3 =45 Ω ± 4%. If the resistance are connected in series, then limiting error produced in equivalent resistance is 2% 1% 3% 4% 2% 1% 3% 4% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving coil ammeter has a uniform scale with 50 division and gives a full scale reading 10 A. The instrument can read up to (1/5)th of a scale division with a fair degree of certainty. What is the resolution of the instrument in mA? 25 mA. 50 mA. 40 mA. 80 mA. 25 mA. 50 mA. 40 mA. 80 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is 1 mA. 2 mA. 3 mA. 4 mA. 1 mA. 2 mA. 3 mA. 4 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following devices may be used for extending the range of instruments? All of the listed here Potential transformers Current transformers Shunt All of the listed here Potential transformers Current transformers Shunt ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Wagner earthing device is used to eliminate errors due to None of these Electromagnetic coupling Both A and B Electrostatic coupling None of these Electromagnetic coupling Both A and B Electrostatic coupling ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The core flux in the CT of above question no.6, under the given operating conditions is 1000 mWb. 450 mWb. 225 mWb. 0. 1000 mWb. 450 mWb. 225 mWb. 0. ANSWER DOWNLOAD EXAMIANS APP
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