Electronic Measurement & Instrumentation

What are the applications of electrodynamic instruments?

What do you mean by phantom loading in energy meter.

Write the applications of potential transformers.

Define the term burden in instrument transformers.

What do you mean by standardization and calibration of potentiometers?

What are the merits and demerits of AC potentiometers?

Classify the ranges of low, medium and high resistances.

Draw the circuit diagram of Price's Guard wire method for measurement of resistances.

Draw the phasor/vector diagram of De Sauty bridge.

Draw the circuit diagram of Hay's Bridges.

Explain the construction and working of moving coil type instruments.

Derive the expression of Blondel's theorem for n - phase.

Explain the effect of variation of power factor of instrument transformers.

Draw and explain the diagram of crompton potentiometers.

Draw and explain the circuit diagram of Kelvin's double bridge method for measurement of resistances.

What are the various difficulties are encountered in measurement of high resistances. Explain their overcome techniques.

Explain the circuit diagram and phasor/vector diagram of Heaviside's bridges.

Explain the construction and working of induction type instruments with merits and demerits.

Discuss the ratio and phase angle errors and their minimization techniques of instrument transformers.

Explain the working and applications of Slide wire potentiometers with neat diagram with merits and demerits.

Draw and explain the circuit diagram of measurement of earth resistances with applications.

Explain the circuit diagram and phasor/vector diagram of Maxwell's Bridges with merits, demerits and applications.