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How does a phasor measurement unit (PMU) work?
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Explain the working principle of a phasor measurement unit (PMU).

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How does a charge-sensitive detector work in radiation measurement?

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What is the purpose of a phasor data concentrator (PDC) in synchrophasor systems?

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Draw the phasor diagram for leading load of a transformer.

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Draw the phasor diagram for lagging load of a transformer.

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Draw the phasor diagram for resistive load of a transformer.

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Draw the phasor diagram of a practical transformer without load.

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Draw the circuit diagram and phasor diagram of nominal T method of medium transmission line.

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What is taken as reference for drawing the phasor diagram in parallel connection?

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What is taken as reference for drawing the phasor diagram in series connection?

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Define Phasor and Phase angle.
Answer : ### Phasor: A **phasor** is a complex number that represents the magnitude and phase of a sinusoidal waveform (usually a voltage or current). Instead of dealing with the waveform in time ... (advanced). So, the phase angle helps describe the timing difference between different sinusoidal signals....

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Derive the torque equation of 3 φ I.M. under running condition.k) Explain production of R.M.F. in 3-phase I.M. when 3 φ supply is fed to it. Draw its phasor diagram.

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Describe how the following measurements can be made with the use of CRO: (i) Voltage measurement (ii) Time period measurement

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What is the purpose of a frequency counter in signal measurement?

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What is the purpose of a loss of excitation protection scheme using impedance measurement?

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Explain the advantage of using a Hall effect sensor for current measurement.

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What is the purpose of a strain gauge in force measurement?

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What is the purpose of a Rogowski coil in current measurement?

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Describe the method for the measurement of high voltage in an a.c circuit using a potential transformer.

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Explain with neat labeled diagram measurement of flow using a venturimeter.

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What is the role of a shunt resistor in current measurement?

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What is the purpose of a current transformer in power measurement?

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What is the purpose of a current shunt in measurement circuits?

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What is the unit of power work and energy respectively?

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