What is doping in semiconductor material?
[3 marks]Explain p and n semiconductor formation in detail.
[4 marks]Explain Voltage Divider biasing in detail.
[7 marks]Explain tunnel diode with reference to
[3 marks]symbol, ii) V-Icharacteristics, iii) Applications.
[ marks]Compare Centre Tapped Full wave rectifier and Bridge Full Wave Rectifier.
[4 marks]Explain capacitive filter with Ripple Factor.
[7 marks]Draw and explain series and shunt positive clipper with output waveforms.
[7 marks]Label the three regions of operation on a bipolar junction transistor collector curve.
[3 marks]An a.c. voltage of peak value 20 Vis connected in series with a silicon diode and load resistance of 500 Ω. If the forward resistance of diode is Ω, find: (i) peak current through diode (ii) peak output voltage What will be these values if the diode is assumed to be ideal ?
[10 marks]Draw and explain bridge rectifier circuit with Capacitor filter. Draw necessary waveforms.
[7 marks]Draw the circuit of emitter follower and find its AC emitter resistance.
[3 marks]Drive the relation between dc alpha and dc beta for bipolar junction transistor.
[4 marks]Explain how the swamped amplifier works and list three of its advantages.
[7 marks]Compare three configuration CB, CC and CE in terms of their input and output resistance.
[3 marks]Atransistor is connected in common emitter (CE) configuration in which collector supply is 8 Vand the voltage drop across resistance Rconnected in the collector circuit is 0.5 V. The value of R = 800 Ω. If C C α = 0.96, determine: (i) collector-emitter voltage (ii) base current.
[4 marks]Draw the circuit of class Bpush – pull amplifier and explain its working. List the advantages and disadvantages.
[7 marks]Compare E MOSFET with D MOSFET.
[3 marks]Draw and explain regulated power supply system.
[4 marks]In the circuit diagram shown in Fig., if V = 12V and R = 6 kΩ, draw CC C the d.c. load line. What will be the Qpoint if zero signal base current is 20μA and β = 50 ?1
[7 marks]What is the difference between voltage amplifier and power amplifier?
[3 marks]Explain the four types of negative feedback connections.
[4 marks]Explain the working of a transformer coupled class Apower amplifier and show the efficiency of class Atransformer coupled amplifier is 50%.
[7 marks]Define positive and negative feedback. Also derive the expression of transfer gain with negative feedback with the use of block diagram.
[3 marks]Describe JFET applications as analog switch.
[4 marks]Show that the upper limit of the conversion efficiency (η) for the series fed class Aamplifier is 25%.
[7 marks]