Electrical Measurement and Measuring Instruments — Summer 2024

Define 1) Sensitivity 2) Drift 3) Precision.

Explain advantages of electrical transducer.

Draw a functional block diagram of the measurement system. Also explain the function of each block in brief.

Enlist pressure sensitive primary devices. Explain any one in brief.

Explain working principle of strain gauge.

Describe the working principle, construction and operation of R.T.D. Draw it’s characteristics.

Define transducer & give classification of transducers on different basis.

List out drawback of Shunt and Multiplier.

Describe the constructional detail of a PMMC instrument with the help of diagram.

State and explain the methods of extension of range of Voltmeter.

Explain construction and working of Instrument transformers.

Describe the constructional detail of a moving iron instrument with the help of diagram.

Explain construction and working of Induction type single phase energy meter. Derive it’s torque equation. .

Enlist different methods of measurement for low, medium and high resistances.

Explain the loss of charge method for measurements of insulation resistance.

How the effect of contact resistance and resistance of the connecting leads are eliminated using kelvin’s double bridge? Explain with neat diagram. OR1

Enlist different bridges used for the measurement of inductance.

Draw neat diagram of Schering Bridge, derive the equations of balance.

Explain Maxwell’s inductance-capacitance bridge for measurement of inductance. Derive bridge balance equation. Also draw phasor diagram.

What is clamp on meter? Write its applications.

Explain measurement of capacitance with the help of De Sauty’s Bridge.

Explain block diagram of Digital Storage Oscilloscope .Enlist its applications.

Give comparison of Analog and Digital multimeter.

Explain measurement of resistance with the help of Wheatstone Bridge.

Describe the construction, working and application of megger with suitable diagram.