(i) Sketch the circuit and waveforms for ac voltmeter using a PMMC Instrument and half wave rectifier. Explain the function of three phase wattmeter and energy meter. Discuss why it is necessary to carry out frequency domain analysis of measurement Systems? What are the two plots obtained when the frequency response of a system is carried out? (16) EE8403 Question Bank measurements and instrumentation 4. (8) (ii) Explain the frequency measurement in Wien’s bridge (8) 3. (i) How B-H curve is determined for a ring specimen. (10) (ii) Explain the design of three phase wattmeters and give the reactive power measurement in 3 phase circuits. (i) Describe the construction and working of a permanent magnetic moving coil instruments. What is meant by creep adjustment in three phase energy meter? (2) PART – B EE8403 Question Bank measurements and instrumentationġ. (2) EE8403 Question Bank measurements and instrumentation 20. What is an energy meter? Mention some advantages and disadvantages of energy meter. Voltmeter has high resistance, why it is connected in series? (2) 19. What is the use of Multimeter? Write its advantages and disadvantages. What are the precautions taken while using a DC voltmeter and DC Ammeter? (2) EE8403 Question Bank measurements and instrumentation 17. Define the sensitivity of a moving coil meter.

Why an ammeter should have a low resistance? (2) 15. State the basic principle of moving iron instrument. What is loading effect? (2) EE8403 Question Bank measurements and instrumentation 13. How a PMMC meter can be used as voltmeter and ammeter? (2) 12. Explain the principle of analog type electrical instruments. What are the errors that take place in moving iron instrument? (2) 10. Which torque is absent in energy meter? Why? (2) EE8403 Question Bank measurements and instrumentation 9. Explain the purpose of Schmitt trigger in digital frequency meter. Write any two advantages and disadvantages of digital voltmeter. Brief the principle of digital phase meter. (2) EE8403 Question Bank measurements and instrumentation 5. Write the function of instrument transformer. List two instruments for measurement of frequency. Give the importance of iron loss measurement. State the principle of digital voltmeter. Sample EE8403 Question Bank Measurements And Instrumentation:ġ.

Measurements And Instrumentation Question Bank EE8403 pdf free download. EE8403 Question Bank Measurements And InstrumentationĮE8403 Question Bank Measurements And Instrumentation Regulation 2017 Anna University free download.

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