This test is based on following contents
Symbol, construction and working principle of P-N junction diode
Rectifiers: Half wave, Full wave and Bridge Rectifier, working principle, circuit diagram, performance parameters PIV, ripple factor, efficiency,Need for filters: circuit diagram and working of ‘L’, ‘C’ and ‘π’' filter.
Zener diode working principle, symbol, as voltage regulator
Symbol, construction and working principle of light emitting diode(LED)
Working principle and block diagram of regulated power supply.
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