Cochin University of Science and Techology (CUST) 2005 B.Tech Electronics and Communications Engineering ELECTRONIC MEASUREMENTS

BTech Degree VI Th SEMESTER EXAMINATION, NOVEMBER 2006
ELECTRONIC MEASUREMENTS & INSTRUMENTATION

1a.explain the subsequent terms:
A. Accuracy
B. Precision
C. Linearity
D. Histeresis
1b.derive the transfer function of a 1st order system.
2a. discuss the methods of reducing noise and interference in measurement systems.
2b.what is dynamic range? discuss.
2c.list the common fault encountered during measurements.
3a.differentiate between:
A. Active and passive transducers
B. Analog and digital transducers.
3b.With the help of necessary diagrams discuss the working of LVDT. Briefly define how they can be employed to measure linear displacements.
4a.explain how low value resistance is measured.
4b.explain the different sources of errors in bridge circuits and list the precautions.
5a. discuss the working of digital storage oscilloscope with the help of a block diagram.
5b. discuss the working of X-Y recorders.
6a. discuss alpha numeric displays.
6b. discuss the working of any spectrum analyzer.
7a. discuss the principle of thermocouples. elaborate the different kinds of thermocouples?
7b. discuss the working of a radiation thermometer.
8a. discuss the flow measurement using electromagnetic flow meter.
8b. discuss any 1 method to measure low pressure.
9a. what is Data Acquisition System? discuss with the help of a simple block diagram.
9b. discuss the principle of telemetry with the help of block diagram.
10a. discuss the working of an adsorption column chromatograph.
10b. provide the basic schematic of a power plant. discuss in brief.

Earning:   Approval pending.