Electrical Measurement and Measuring Instruments — Summer 2025

Explain principle and construction of Thermocouple.

Explain (i) Active and Passive transducers (ii) Transducers and Inverse transducers with suitable examples.

State and Explain Static characteristics of measuring Instruments.

State methods for measurements of low resistances. Explain any one in detail.

Explain loss of charge method of measurement of high resistance.

Explain measurement of unknown capacitance with the help of Schering bridge. Also draw phasor diagram.

Explain working of Kelvin’s double bridge for measurement of low resistance with a neat diagram.

Explain pressure sensing devices.

Describe the various types of errors in the measurement system.

Describe the working principle of Hall effect transducers. Also state its applications.

What are the criteria for selection of the transducer?

Explain instrument range extended by Instrument Transformers.

Describe constructions and operating principles of electrodynamometer type wattmeter.

What is the basic working principle of moving iron instruments?

Draw & explain construction of PMMC instruments.

Explain measurement of unknown inductance with the help of Hay’s bridge. Also draw phasor diagram.

What are the forces or torque required for the operation of the measuring Instruments?

Explain instrument used for the measurement of power factor.

Explain any one transducer used for measurement of Displacement.

State transducers used for measurement of Capacitance. Explain any one.

Explain Clamp on meter.

Explain construction and working principle of Megger.

Draw circuit diagram of Maxwell’s Inductance bridge.

Explain different types of digital display.1

Describe the principle of working and block diagram of a digital storage oscilloscope