Hi friends,
On this thread i am uploading high quality notes for the subject Electrical measurements and instrumentation (EMI). These notes can be downloaded easily and will definitely help you prepare well for this subject and it's semester exam. All the best!
Topics covered in Electrical Measurements & Instrumentation (EMI) notes, eBook:
On this thread i am uploading high quality notes for the subject Electrical measurements and instrumentation (EMI). These notes can be downloaded easily and will definitely help you prepare well for this subject and it's semester exam. All the best!
Topics covered in Electrical Measurements & Instrumentation (EMI) notes, eBook:
- Measuring Instruments: Classification, Absolute and secondary instruments, indicating instruments, control, balancing and damping, constructional details, characteristics, errors in measurement, Ammeters, voltmeters: (DC/AC) PMMC, MI, Electrodynamometer type
- Instrument Transformers: Potential and current transformers, ratio and phase angle errors, phasor diagram, methods of minimizing errors; testing and applications.
- Galvanometers: General principle and performance equations of D' Arsonval Galvanometers, Vibration Galvanometer and Ballistic Galvanometer.
- DC/AC Bridges: General equations for bridge balance, measurement of self inductance by Maxwell's bridge (with variable inductance & variable capacitance), Hay's bridge, Owen's bridge, measurement of capacitance by Schearing bridge, errors, Wagner's earthing device, Kelvin's double bridge.
- CRO: Block diagram, Sweep generation, vertical amplifiers, use of CRG in measurement of frequency, phase, Amplitude and rise time of a pulse.
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