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PART-B (48 Marks)
- a) State and explain Kirchhoff’s laws. (8M)
b) A 10 Ω resistor, a 15 Ω resistor and a 20 Ω resistor are connected in parallel across a 220V source. Determine: (8M)
i) the total current delivered by the source.
ii) the current in each resistor. - a) Define the terms instantaneous value, average value and RMS value of an alternating quantity. (8M)
b) Derive the RMS value of sinusoidal alternating quantity. (8M) - a) Explain the working principle of a single phase transformer and derive the EMF equation. (8M)
b) Explain the different types of DC generators. (8M) - a) Derive the torque equation of DC motor. (8M)
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b) Explain the construction details of DC Machines. (8M) - a) Explain the working principle of Moving Iron Instruments. (8M)
b) Explain about different types of Earthing. (8M)
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