STUPIDSID
1(a)
With appropriate circuit diagram explain the
DC load line analysis of semi conductor diode.
5 M
1(b)
In a full wave rectifier, the input is from 30-0-30
V transformer. The load and diode forward resistances are 100? and 10? respectively. Calculate the average voltage, dc output power, ac input power, rectification efficiency and percentage regulation.
5 M
1(c)
Explain the working of positive clamping circuit.
5 M
1(d)
In a Common Emitter transistor circuit if
?= 100 and IB= 50?A,compute the values of ?, IEand Ic.
5 M
2(a)
With a neat circuit diagram and waveforms explain t
he working of full wave bridge rectifier and show that its ripple factor is 0.48.
8 M
2(b)
Draw the common emitter circuit and sketch the
input and output characteristics. Also explain active region, cutoff region and saturation region by indicating them on the characteristic curve.
7 M
2(c)
Design Zener voltage regulator for the following sp
ecifications:Input Voltage=10V±20%, Output Voltage=5V,IL=20mA,Izmin=5mA and Izmax=80mA.
5 M
3(a)
With a neat circuit diagram explain the Voltage Divider Bias circuit by giving its exact analysis.
8 M
3(b)
Explain the characteristics of an Ideal Op-Amp. Mention some of the applications of Op-Amp.
6 M
3(c)
Determine the operating point for a silicon transisto
r biased by base bias method with ?= 100, RB= 500K?RC= 2.5K? and VCC= 20V. Also draw the DC load line.
6 M
4(a)
Explain how Op-Amp can be used as
i)Integrator ii) Inverting Summer and iii) Voltage Follower
i)Integrator ii) Inverting Summer and iii) Voltage Follower
10 M
4(b)
Find the output of the following Op-Amp Circuits.
i)
ii)
10 M
5(a)
State and prove DeMorgan's Theorems for three variables.
4 M
5(b)
Realize two input Ex-OR gate using only NAND gates.
5 M
5(c)
Design Full Adder and Implement it using two half adders.
6 M
5(d)
With the help of switching circuit, Input/output waveforms and truth table explain the operation of a NOT Gate.
5 M
6(a)
Design a logic circuit using basic gates with three inputs A,B, C and output Y that goes low only when A is high and B and C are different
5 M
6(b)
Convert i) (1AD.E0)16 =(?)10=(?)8ii)(356.15)8=(?)2==(?)10
5 M
6(c)
(i)Subtract (1111.101) 2from (1001.101)2
using 1's compliment method.
ii)Subtract (11101.111)2from (11111.101)2using 2's compliment method.
ii)Subtract (11101.111)2from (11111.101)2using 2's compliment method.
5 M
6(d)
Simplify Y=AB+ AC+ABC(AB+ C)
5 M
7(a)
Define Flip Flop. Give the difference between Latch and Flip Flop.
4 M
7(b)
Explain the working of LVDT.
6 M
7(c)
With the help of logic diagram and truth table explain the working of clocked RS Flip Flop.
5 M
7(d)
List the differences between Microprocessor and Microcontroller.
5 M
8(a)
With a neat block diagram explain the architecture of 8085 Microprocessor
9 M
8(b)
What is a Transducer? Distinguish between active and passive transducers.
5 M
8(c)
Explain i) Hall Effect ii) Seebeck Effect iii) Peltier Effect
6 M
9(a)
What are the commonly used frequency ranges in communication systems? Mention the applications of each range.
4 M
9(b)
Define AM. Draw the AM signal and its Spectrum. Derive an expression for total power in an AM signal.
6 M
9(c)
Calculate the percentage power saving when one side band and carrier is suppressed in an AM signal with modulation index equal to 1.
5 M
9(d)
With a network diagram explain the working of typical switched telephone system.
5 M
10(a)
With a block diagram explain typical cellular mobile radio unit.
5 M
10(b)
What is ISDN? Explain the services of ISDN.
5 M
10(c)
Give the comparison between AM and FM.
4 M
10(d)
With a neat block diagram explain optical fibre communication system.
6 M
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