Download GTU BE/B.Tech 2018 Winter 3rd Sem Old 130903 Electrical And Electronics Measuring Instruments Question Paper

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Subject Code: 130903

GUJARAT TECHNOLOGICAL UNIVERSITY

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Date: 10/12/2018
Subject Name: Electrical And Electronics Measuring Instruments
Time: 10:30 AM TO 01:00 PM

Instructions:

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

1. 1. Define the terms: 1. Accuracy 2. Precision 3. Sensitivity 4. Resolution [07]

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2. 1. Discuss Extension of range of instruments. [07]
3. 1. Explain construction working of D’Arsnaval galvanometer. Also derive its torque equation [07]
4. 1. Explain voltage standards. [07]

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   OR

   1. Discuss the classification of analog instruments. [07]
5. 1. With a neat diagram explain 1).construction 2).working, 3).torque equation and 4). Advantages and disadvantages of a PMMC instruments. [07]

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6. 1. Compare moving coil and moving iron instruments. [07]

   OR

   1. Explain the construction of multi range ammeter. [07]
7. 1. Explain construction and working principle of thermocouple instruments. [07]

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8. 1. Explain the construction and working principle of single phase induction type energy meter. [07]
9. 1. Explain the two watt-meter method for 3-phase power measurement for balanced load. [07]

   OR

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   1. Explain the need of measuring phase sequence and also explain types of phase sequence indicator. [07]
10. 1. Discuss applications of DC potentiometer. [07]
11. 1. Write a short note on digital tachometer [07]

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12. 1. Explain with a neat diagram working of a Synchroscope [07]

    OR

    1. Explain the circuit diagram and operation of an Electronic Voltmeter using a differential amplifier [07]

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13. 1. Explain the principle of operation of a power factor meter. [07]

Total Marks: 70

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