Download PTU B-Tech EEE 2020 Dec 3rd Sem 57094 Electrical Measurements And Instrumentation Question Paper

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Total No. of Pages : 02
Total No. of Questions : 17

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B.Tech.(EE) (2012 Onwards)/(Electrical & Electronics Engg.)
(2011 Onwards)/B.Tech. (Electronics & Electrical Engg./ Electrical
Engineering & Industrial Control) (2012 to 2017) (Sem.-3)

ELECTRICAL MEASUREMENTS AND INSTRUMENTATION
Subject Code : BTEE-303

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INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.

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3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

Answer briefly :

1. Differentiate between Analog and Digital measuring instrument.
2. Describe the Resistance, capacitance and induction with their SI units.

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3. Describe the features of instrument-transformers.
4. What is dynamometer?
5. Explain the pointers and scales for Analog measuring instruments.
6. What is the major cause of creeping error in an energy meter?
7. What is self-balancing potentiometer?

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8. What is meant by dc potentiometer and ac potentiometer and its applications?
9. Explain the energy meter and its sources of error.
10. What is meant by damping torque?

SECTION-B

11. Describe the principal of operation of induction meter also measure its voltage, current, power for ac circuits?

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12. How the AC testing of magnetic material is done and also explain the B-H curve?
13. Describe how a DC potentiometer, and its modern form works?
14. Define Bridge and also differential between the various types of bridges used.

SECTION-C

15. Define Instrument Transformer and explain the construction of both current and potential transformer.

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16. Draw the circuit diagram of AC Bridge. Derive the conditions for balancing the bridge and draw the phasor diagram during balanced condition.
17. Write short notes on :
    1. PMMC
    2. Torque
    3. Muti-meter

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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.