STUPIDSID
1 (a)
Categorize power amplifiers by its class. Compare the each class by its operation cycle and power efficiency.
7 M
1 (b)
Explain the working of center taped full wave rectifier with waveforms.
7 M
2 (a)
Explain how a Schottky diodes work. List its advantages over common diode and applications.
7 M
Answer any one question from Q2 (b) & Q2 (c)
2 (b)
Determine v o for network given below.
7 M
2 (c)
Determine vo for network given below:
7 M
Answer any two question from Q3 (a), (b) & Q3 (c), (d)
3 (a)
Describe the relationship among the base, emitter and collector currents of a bipolar junction transistor.
7 M
3 (b)
Determine the range of values of V i that will maintain the Zener diode of figure given below in the 'ON' state.
7 M
3 (c)
Explain the application of JFET as shunt switch and series switch.
7 M
3 (d)
Determine the dc bias V CE and the current I c for the voltage-divider configuration of figure given below.
7 M
Answer any two question from Q4 (a), (b) & Q4 (c), (b)
4 (a)
Describe the structure of a silicon crystal. List the two types of carriers and name the type of impurity that causes each to be a majority carrier.
7 M
4 (b)
Define positive and negative feedback. Also derive the expression of transfer gain with negative feedback with the use of block diagram.
7 M
4 (c)
Explain how the swamped amplifier works and list three of its advantages.
7 M
4 (d)
Explain the Zener breakdown and avalanche breakdown in pn-junction.
7 M
Answer any two question from Q5(a), (b) & Q5 (c), (d)
5 (a)
Explain the importance in analyzing ac operation of transistor's with T-model and π model.
7 M
5 (b)
Draw a schematic of a typical CMOS digital switching circuit and explain its operation.
7 M
5 (c)
Draw a diagram of an emitter follower and describe its working and advantages.
7 M
5 (d)
Explain the characteristics and operation of Enhancement-mode MOSFET.
7 M
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