DieselShip's Online Content Library

Q5. A) Explain how the efficiency and regulation of a transformer can be assessed by open circuit and short circuit tests? (6)
b) A tuned circuit consisting of a coil having an inductance of 200 mH and a resistance of 20 Ω in parallel with a variable capacitor is connected in series with a resistor of 8000 Ω across a 60V supply having a frequency of 1 MHz Calculate:
a) The value of C to give resonance.
b) The dynamic impedance and the Q factor of the tuned circuit.
c) The current in each branch. (10)