Anna University Regulation 2017 ECE EI6301EM 2marks & 16marks for all 5 units are provided below. EI6301EM Short answers, Question Bank for ELECTRICAL MEASUREMENTS Engineering are listed down for students to make perfect utilization and score maximum marks with our study materials.
A PMMC instrument has a 0.12T magnetic flux density in its air gaps. The coil dimensions are D = 1.5 cm and l =2.25 cm. Determine the number of coil turns required to give a torque of 4.5 μN-m when the coil current is 100μA. Td = NBldI N = Td / BldI = 4.5 x 10-6 / (0.12 x 2.25 x 10-2 x 1.5 x 10-2 x 100 x 10-6) N = 1111
What is the use of swamping resistor? Swamping resistor is connected in series with meter resistance to reduce the error caused by temperature rise (i.e. temperature error). Swamping resistance to meter resistance ratio should be high
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