UNIT-1 EMI ONE SHOT ELECTRICAL III-SEM I AKTU GATEWAY CLASSES

AKTU EE III-SEM
ONE SHOT UNIT I
ELECTRICAL MEASUREMENTS & INTRODUCTION TO MEASURING INSTRUMENTS: Measurement system,
Characteristics of instruments, Methods of measurement, Errors in Measurement & Measurement
standards, Classification of Instrument - deflecting, controlling and damping torques - Ammeters and
Voltmeters - PMMC, moving iron, Electrostatic, induction type instruments - expression for the deflecting
torque and control torque - Errors and compensations, extension of range of instruments.