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Working of Hartley oscillator :
When the collector supply voltage Vcc is switched on, the capictor gets charged. The capacitor discharges through the inductor, setting up oscillations of frequency: -
f = 1/ (2p*[C (L1 + L2 + 2M)] 1/2 )
Considering the fact that there exists mutual inductance between the two coils because the coils are wound on the same core, their net effective inductance is increased by mutual inductance M. so in this case effective inductance -
L = L1 + L2 + 2M.
Factors which affect the inductance of an inductor include: i) The number of turns of wire (N) - more turns the higher the inductance ii) The cross-sectional area of the
Q. A 5-MVA, 66:13.2 kV, three-phase transformer supplies a three-phase resistive load of 4500 kW at 13.2 kV. What is the load resistance in ohms as measured fromline to neutral on
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