Electro Mechanical Measurement and Instruments — Summer 2022

What are the different methods of measurement and explain each briefly.

List the different standards of measurement and describe each briefly.

Explain in detail the “Generalized Measurement System” with all its functional blocks with suitable example.

Explain static calibration process with suitable example.

Explain Input-Output configuration for measuring instrument.

Explain first order system responses for step, ramp and sinusoidal inputs.

Classify the various types of errors in measurement and explain each in detail with suitable example.

Define: (1) Precision (2) Resolution and (3) Fidelity

With schematic diagram explain optical torsion meter.

What are the force measuring devices? Explain any one in detail with neat sketch.

Compare between current transformers (CT) and potential transformers.

Derive the expression of gauge factor for electrical resistance strain gauge in terms of Poisson’s Ratio.

What are the different principle of operations of capacitive transducers and prove that differential arrangement of capacitive displacement transducer gives linear response.

Explain that why and when, lead wire resistance compensation is needed in RTD.

Derive the differential output voltage equation of quarter bridge circuit for electrical resistance strain gauge.

Prove that Piezo-Electric transducer is not suitable to measure static quantities.

Explain briefly the working principle of Stroboscope with suitable sketch.

Using neat sketch explain the hand speed mechanical tachometer.

List the torque measurement methods. Explain in detail any one with neat sketch.1

State the factors affecting the precision measurement of resistance with Wheatstone bridge.

Write the various applications of DC potentiometer and explain any one briefly using suitable diagram.

List the various telemetry systems and explain any one in detail with suitable diagram.

Briefly explain the principle of operation of LVDT with its schematic diagram.

With neat sketch explain torque measurement using Eddy Current Dynamometer.

How acceleration can be measured? Discuss any one approach in detail.