VLSI DESIGN (QUESTION BANK)
SESSION:
2013-14
SUBJECT:
VLSI DESIGN (EEC-703)
1.
Describe about the different design methodologies used
in VLSI Design.
2.
Discuss about the design flow of VLSI circuits in
detail.
3.
With the help of different examples explain about the
concepts of Regularity, Modularity and Locality.
4.
Draw the stick diagram of CMOS inverter.
5.
Derive the current voltage relationship of NMOS for
different bias conditions.
6.
Describe about the different scaling techniques in
detail.
7.
Explain about the small geometry effects.
8.
List and explain about the capacitances related to MOS
under different bias conditions.
9.
Explain about Y-diagram and design hierarchy.
10. With
the help of diagrams explain about the Resistive load inverters.
11. What
is the advantage of active load inverter? Discuss the advantages and
disadvantages of different active load inverters with suitable diagram.
12. What
is the cause of delay in CMOS inverter? Define the time delay parameters in
CMOS.
13. Explain
with suitable diagram the working of a CMOS inverter and also give different
voltage levels in all five regions.
14. With
the help of NMOS and PMOS characteristic curves explain the different regions
of CMOS inverter, also explain why it exhibits a large gain in region3.
15. Find
the expression for time delay in CMOS inverter by approximate or average method
and exact method.
16. Derive
the relationship between Current & Voltage for an NMOS enhancement
transistor for cutoff, Linear and saturation. Explain in detail about the power
consumption in CMOS inverter and also find the expression for it.
17. Why
threshold logic voltage of a CMOS inverter kept as 50% off supply voltage.
Under what condition it can be maintained? Find the expression for it.
18. What
will happen if the current ratio of an NMOS and PMOS kept less than 1 and
greater than 1?
19. Give
two different configurations of the BiCMOS inverter. How these configurations
can provide a larger fan out?
20. How
the width of the uncertainty region can be kept small? Why a small uncertainty
region results in a larger noise margin?
21. Realize
the CMOS full adder circuit with minimum number of transistors. What will
happen if pull-up network is implemented by NMOS and pull down network is
implemented by PMOS?
22. Explain
in detail about the transmission gate and also prove that the effective impedance is independent of the
output voltage
23. With
the help of suitable diagram explain the working of a two input depletion load
NOR gate in transient and steady state, and also derive all the relevant
equations for it.
24. With
the help of cascade inverter diagram explain the terms noise margin for logic
’’1’’ and ‘’0’’.
25. Explain the term unstability related to CMOS
inverter. Why it arrives and is there major consequence of it?
26. Explain
the structure and operation of the MOSFET under external biasing.
27. What is MOSFET scaling? Explain the
types of scaling. What are the advantages and disadvantages of scaling?
28. Explain
the process of fabrication of the NMOS transistor.
29. Explain
the differences between enhancement type and depletion type devices.
30. Why
drain current increases even the transistor is in saturation?
SATELLITE COMMUNICATION (QUESTION BANK)
PAPER FOR 2ND SESSTIONAL
EXAM
SUBJECT-
SATELLITE COMMUNICATION
CODE-EC-021
Q1. Explain FDMA
Technique
Q 2.Explain TDMA
Technique
Q 3. Explain CDMA
Technique
Q4. Explain SDMA
Technique
Q.5 What are the
factors that affect the uplink and down
link design
Q.6 Explain VSAT
Q.7 the semimajor and
minor axis of an elliptical satellite orbit are 20,000 km and 1600 km
respectively.Determine the apogee and perigee distances
Q.8 Derive general link equation. Find outexpression
for C/N and G/T ratio.
Q.9 Discuss the antenna requirements for large and
small earth statiion
Q. 10 What are
the various interferences that may affect the satellite link performances?
Explain
Q.11 Two
amplifiers are connected in cascades having a gain of 20 db each. If the noise
temperature is 200k , determine the
overall gain
Q.12 The EURP of 240W Transponder is 57 dbW. Calculate
the approximate gain of the antenna if the transponder is switched to 120W.
calculate the new EIRP,assuming that the
same antenna is used
Q.13 what is mean by look angles? Explain them with
reference to a geostationary satellite
and the earth station
Q.14 Satellite-1 In An Elliptical Orbit has The orbit semi
major axis equal to 18000km and satellite-2 an elliptical orbit has semi major axis equal
to 24000 km . Determine the Relationship between their orbital periods.
Q. 15 with the aid of
a sketch. Explain what is meant by each of angle
Inclination ,
argument of pergee, right ascension of the ascending node
Q.16 Explain briefly what is meant by sun transit outage?
Q.17 Differentiate
between TDMA and FDMA
Q.18 Explain Noise Temperature
Q.19.Define
satellite switched TDMA?
Q20. Define EIRP and Find the Julian Date for 13 hours UT
on 18 Dec 2000
Q . 21 Define Satellite Communication and Satellite
Q.22 Explain Kepler’s
L:aws
Q.23 Explain Types of Attenuation
Q .24 Explain Types
Depolarization
Q.25 Explain Absorption Effect on Propagation in
Communication link Design
Q.26 Explain steps
for design in Satellite link for
Communication
Q 27Define
a)Ascending and Descending nodes
b) mean anomaly and true anomaly
Q.28 Derive the
Expression of power of Satellite link design for reciver
Q.29. calculate time in days, hours, minutes and
seconds for epoch day 324.95616765
Q.30 A
geostationary satellite is located 900 W.
Calculate the azimuth angle for an Earth station antenna located at latitude 350 W and longitude 1000 W.
OC (QUESTION BANK)
Dronacharya
Group of Institutions, Greater Noida
Electronics
and Communication Engineering Department
Question
Bank
Subject:
OC (EEC-701) Branch: ECE 7th Semester
1. Draw a block diagram of fiber optic communication system and describe the function of each component
2. What is the structure of optical fiber? Give the advantage of optical fiber over metallic cables.
3. Differentiate between step index and Graded index fiber. How the rays do propagates in graded index fiber?
4. What is the difference between acceptance angle, critical angle and numerical aperture? A step index fiber has a core and cladding refractive index of 1.50 and 1.46 resp. what is the value of NA and acceptance angle of the fiber?
5. Differentiate between Meridional Rays and Skew Rays. Explain the nature of light.
6. What is the group velocity and phase velocity? An optical signal of wavelength λ propagates in a medium of refractive e index n1. What is the value of phase velocity and Group velocity?
7. Explain the following:
1. Normalized propagation constant
2. Mode field Theory
3. Explain what is meant by critical bending radius for an optical fiber.
4. Discuss the linear scattering losses in optical fibers w.r.t
1. Rayleigh Scattering
2. Mie Scattering
3. What do you mean by mode coupling? Explain the various irregularities in the fiber of its causes.
4. Explain Modal birefringence and beat length in single mode fibers,
5. Explain intrinsic and extrinsic absorption in optical fiber material.
6. Write a note on polarization maintaing fiber.
7. Explain the dispersion mechanism in optical fibers.
8. What is the population Inversion? Explain the mechanism of Population inversion for three level & four level energy state system.
9. What is the requirement for optical sources to feed into a fiber? Enlist the advantage & Disadvantages of LASER & LED.
10. Explain the necessity of carrier confinement in semiconductor laser.
11. Differentiate the different geometries of LASER
12. Explain the various structure of LED.
13. Derive the expression for the threshold value of gain for LASER oscillations.
14.
15. Explain the characteristics of LED.
16. Explain the principal of LASER diode. What are the pumping techniques of LASER diode? Give the structure of FP cavity LASER and how it is better than FP LASER.
17. What do you understand by the term external quantum efficiency and internal quantum efficiency?
18. What do you understand by optical detector? Discuss its various types of optical detector and parameters of photo detectors
19. Discuss the impact ionization in avalanche photodiode. Explain the multiplication factor and photo multiplication factors also.
20. Explain the various measures of efficiency in PIN photodiode & briefly explain the working principle of Schottky barrier photodiodes.
21. Explain the working of p-i-n photodiode. Also explain the factors that limit the speed of response of photodiode.
22. How is RAPD operated? How does it differ from p-i-n photodiode? What are the advantage & disadvantage of RAPD photo detector?
23. Mention the criteria for choosing the photo detectors for optical communication. How does a reverse bias p-n diode act as a detector?
QUALITY MANAGEMENT (QUESTION BANK)
DRONACHARYA GROUP OF INSTITUTION GREATER NOIDA
QUALITY MANAGEMENT (ECE-VII
SEM)
Q.1Draw and.Explain
concept of organisation structure on economy of quality value,optimizing quality
facts and
Reduction process.
Q.2 Define
the term Quality and enumerates the five dimensions
Q,3Give the
objective of quality control
Q.4 What is
quality control give two way how the quality control is exercised
Q.5 Explain
the term statical quality control how is the procress control achieved with the
help of control chart
what are the fundamentalsunderlying the
constructive of a quality control chart.
Q.6 Discuss
the featurs of ISO-9000 versions
standards.
Q.7 Define
six sigma management methods in context of Taghuchi methods.
Q.8.Enumerates
classification of National standarisation Bodies.
Q.9 Discuss the family of standards for quality
management administered for accredation.
Q.10
Establish correlation between Taghuchi method and Just –in-Time methods.
Q.11. Define
defect diagnosis and preventation study and corrective measures.
Q.12.Write
a procedure for document control,
development of sources and control on purchase product.
Q.13.Explain
the steps involving for implementation of ISO-9000 in quality management.
Q.14.Discuss
the benefits and drawbacks of ISO-9000 serios in respect of development and
Registration.
Q15.Write a
note on concept of TQM in management.
Q.17.Distingush
manufacturing quality and service quality
phenomena.
Q.18 Write
the three tenates of just –in –time .
Q.19 What
are the dimentions of quality principles in total quality contro l mechanism.
Q.20.How the
effective skill requred for quality development.
Q.21`Explain
with the help of diagram various types
of control chart used in production process.
Q.22.Enumerates
linkage between TQM and ISO-9000 for
standarisations..
Q.23
What is the significance of MTTF.
Q.24
Distingush reliability control and maintainability control.
Q.25
Importance of human factors and attitude of top management in organization
learning.objectives.
Q.26.Explain
concept of design,review design evolution of prototype in control process.
Q.27Discuss
the factors affecting on reliabilty calculation for building reliabe product.
Q.28 Define
following (a) Co-opration of groups (b) Oprator attitude (c) Responsibilty
Q.29 What do
you mean by the term inventory what are the functions and the reasons for
carrying inventory.
Q.30 What is
meant by pattern of demand and term
order cycle.
DCN (QUESTION BANK)
DRONACHARYA GROUP OF INSTITUTIONS, G.NOIDA
QUESTION BANK
DCN (EEC 702)
2.
Why
do we use layered protocols? Compare OSI and TCP reference models.
3.
What
are the different transmission media? Discuss one in detail.
4.
What
is the use of byte and bit stuffing in data? Explain .
5.
What
do you mean by pipelining? Explain it with examples.
6.
Explain
the relationship between data rate and bandwidth .A noiseless 4 kHz channel is
samples every 1msec.what is the maximum data rate.
7.
What
should be the window size in Go-Back-N ARQ protocol and why?
8.
We
have a baseband channel with a I-MHz bandwidth. What is the data rate for0011001
if we use one of the following line
coding schemes?
a.
NRZ-L
b.
Manchester
c.
Differential Manchester
9.
Explain
selective repeat ARQ in detail.
10.
Explain
bridges, routers, gateways and different level switches.
11.
What
is the difference between datagram subnet and virtual circuit subnet? Explain routing
within a virtual circuit subnet?
12.
Describe
the concept of tunneling in internetworking.
13.
Explain
internet protocols (TCP) in detail.
14.
Explain
real time transport protocol.
15.
Write
short notes on:
a. Remote
procedure call.
b. UDP.
c.
ATM transport layer protocol.
16.
Describe
window management in TCP.
17.
What
are the different transmission media? Discuss one in detail.
18.
What
is the use of byte and bit stuffing in data? Explain .
19.
What
should be the window size in Go-Back-N ARQ protocol and why?
20.
Describe
the concept of tunneling in internetworking.
21.
Explain
internet protocols (UDP) in detail.
22.
Write
short notes on any two
(a)
Remote
procedure call.
(b)
Real
Time Transport Protocol.
(c)
ATM
transport layer protocol.
(d)
Window
Management in TCP.
23.
What
is relation between the S-frame and I frame in HDLC configuration?
24.
Why
do we perfect CSMA over Aloha?
25.
Explain
Reservation Protocol? Where do we use them?
26.
What
are the different elements of Transport protocol? And also explain how we
establish a connection.
27.
Explain
Point To Point protocol in detail.
28.
Describe OSI Layers and various protocols
associated with them?
29.
Describe selective reject protocol.
30.
What is relation between the S-frame and I
frame in HDLC configuration?
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