Download GTU BE/B.Tech 2019 Summer 3rd Sem New 2130903 Electrical Measurement And Measuring Instruments Question Paper

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Subject Code: 2130903

GUJARAT TECHNOLOGICAL UNIVERSITY

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Instructions:

1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

1. Q.1
   1. State the difference between systematic and random Errors. [03]

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   2. Differentiate between analog and digital Instruments. [04]
   3. With a neat diagram explain the construction, working and torque equation of dynamometer type instruments. [07]
2. Q.2
   1. What are the errors due to connections of wattmeter in a circuit? [03]
   2. Write advantages and disadvantages of Electrostatic type instruments? [04]

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   3. Explain method of three phase power measurement using two wattmeter method for balanced 3-phase load. [07]
   OR
   1. Explain working of kelvin’s double bridge for measurement of low resistance with neat diagram. [07]
3. Q.3
   1. Discuss the applications and limitations of whetstones bridge. [03]
   2. Explain the working of multi range electronic multimeter for measurement of D.C and A.C voltage measurement. [04]

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   3. Explain working of Hay’s bridge with suitable phasor diagram. [07]
   OR
   1. Explain the working principle of Q-meter. [03]
   2. Draw and explain basic block diagram of Digital frequency meter. [04]
   3. Discuss with neat sketch working-and application of Schering bridge. [07]

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4. Q.4
   1. Explain working principle of D.C Techometer. [03]
   2. Explain working of Resistive Hygrometer. [04]
   3. Explain the construction and working of RTD. Also state its applications. [07]
   OR
   1. How bourdon tube can be used for pressure measurement? [03]
   2. Explain various-applications of LVDT and RVDT. [04]

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   3. State various thermoelectric laws. Also list out various materials used for construction of thermocouples. [07]
5. Q.5
   1. Write application of X-Y recorders. [03]
   2. How strain gauge can be used for torque measurement? [04]
   3. Define telemetry? With the help of block schematic explain basic telemetry system. [07]

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   OR
   1. Discuss various applications of Digital storage oscilloscopes. [03]
   2. Write applications of hall effect transducers. [04]
   3. With the help of block schematic, explain principle of operation and various methods of data recording in strip chart recorder. [07]

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