1) Describe the principle, construction and working of Permanent Magnet Moving Coil Instrument with a neat and suitable sketch.
2) Write down errors in Permanent Magnet Moving Iron Instruments. Describe them in detail.
3) Explain with suitable diagram of the construction and working of the Induction Type Instrument. Describe errors in Induction instruments.
4) Describe in detail the Dynamometer type wattmeter with essential diagram.
5) Describe how power can be measured in the three phase circuit with the aid of two wattmeters. Describe with a suitable phasor diagram for balanced star connecter load.
6) Describe with suitable diagram, the working principle and construction of Single phase Energy meter in detail.
7) Describe the working of Synchroscope in detail.