A fast CMOS circuit requires that the gm___________. (Where gm means transconductance).
should be small 0.0%
should be high 0.0%
should be independent of gm 100.0%
should vary inversely with speed 0.0%
A signal data object in VHDL is an object with_______________.
a past history of values 0.0%
a present history of values 100.0%
a future history of values 0.0%
a history without any values 0.0%
An active current mirror means that ___________.
active devices are used as load 100.0%
active devices are used as elements 0.0%
it is always active in the circuit 0.0%
None of these 0.0%
Contacts between the metal layers are known as _____________.
contacts 0.0%
cuts 100.0%
vias 0.0%
None of the above 0.0%
Floating point data types provide an approximation of ___________.
complex numbers 0.0%
rational numbers 0.0%
even numbers 100.0%
real numbers 0.0%
For a given total bias current, the gain of a differential pair is________ more than the CS Stage.
1/2 0.0%
1/4 100.0%
1/3 0.0%
1/√2 0.0%
For an npn Bipolar Transistor, gm ___________.
is dependent on input voltage 0.0%
is dependent on IC 100.0%
is independent of the process 0.0%
All of these 0.0%
For the Orbit Process, the n-active and p-active regions have_________.
small capacitance 0.0%
large capacitance 100.0%
infinite capacitance 0.0%
negligible capacitance 0.0%
High Electron Mobility Transistors(HEMT) are formed using alternating layers of _______________.
GaAs and silicon 0.0%
GaAs and boron 0.0%
GaAs and AlGaAs 100.0%
GaAs and germanium GaAs 0.0%
How many Pass transistors can be connected in a series?
3 0.0%
4 0.0%
5 100.0%
6 0.0%
If length (L) and width (W) are both scaled down by α, the area is scaled ___________. ron
down by α resistance 0%
down by α2 0%
up by α 0%
None of these 0%
If length (L) and width (W) are both scaled down by α, the area is scaled ___________. (Power Speed Product PT)
down by α 0%
down by α2 0%
up by α 0%
None of these 0%
If length (L) and width (W) are both scaled down by α, the area is scaled down by __________.
α 0%
α2 0%
α/2 0%
None of the above 0%
In comparison with SSI ,VLSI has ____________ components per chip.
105 or more 0%
104 or more 0%
103 or more 0%
102 or more 0%
In general, VDD and VSS are always distributed upon ____________.
Polysilicon layers 0%
Metal Layers 0%
Either of the above 0%
None of these 0%
In the BiCMOS process, the basic inverter is made by __________.
using mos as switch and BJT as driver 0%
using mos as driver and BJT as switch 0%
using either of the two as driver or switch 0%
None of these 0%
In the Cascode structure, the maximum voltage gain is roughly equal to ____________.
the sum of the intrinsic gain of the transistors 0%
the product of the intrinsic gain of the transistors 0%
the square of the intrinsic gain of the transistors 0%
None of these 0%
In the Folded Cascode structure, ____________.
the current is folded up 0%
the current is folded down 0%
both of the above 0%
none of the above 0%
In VHDL, the prefix "V" stands for ___________________.
VHSIC (very high switching integrated circuit) 0%
VHSIC (very high speed integrated circuit) 0%
VHSIC (very high speed integrated configuration) 0%
VHSIC (verilog high switching integrated circuit) 0%
In VHDL,the order of the concurrent statements must be_________.
increasing(according to size) 0%
decreasing (according to size) 0%
both increasing and decreasing 0%
None of the above 0%
In which condition is the Case statement used?
When the output of design depends on the value of one signal expression 0%
When the behavior of design depends on the value of one signal expression 0%
When the output of design depends on the value of two signal expression 0%
When the behavior of design depends on the value of two signal expressions 0%
In which region should MOS be operated as an amplifier?
It should be operated in the Saturation region 0%
It should be operated in the Triode region 0%
It should be operated in the Cut off region 0%
None of these 0%
Latch up introduces_________.
a low resistance path between adjacent devices 0%
a low resistance path between the source and the drain 0%
a low resistance path between the power supply and the ground 0%
None of the above 0%
LSI and VLSI devices use_____________ technology.
TTL 0%
ECL 0%
MOS 0%
CMOS 0%
MOS current sources are used to generate __________.
current Mirrors 0%
current Steering Circuits 0%
current Sink 0%
All of these 0%
MOS in the Common Gate Configuration provides___________.
Inverted gain 0%
Non inverted gain 0%
Gain less than one 0%
Unity gain 0%
Photolithography in IC Fabrication is___________.
the deposition of oxide in selective areas 0%
the selective removal of oxide in the desired areas 0%
a process for ion implantation 0%
a process for annealing 0%
QHDL(Hardware Description Language) is used for _____________.
software design of circuits 0%
hardware design of circuits 0%
operating system design of circuits 0%
real time operating system design of circuits 0%
Stick diagrams are used to __________.
convey the presence of Metal 0%
convey the presence of Gate 0%
convey the presence of Contact 0%
convey the layer information 0%
The Cascode structure ___________.
has low output impedance 0%
has high output impedance 0%
is the product of output impedance of the two stages used 0%
None of the above 0%
The CMRR (common-mode rejection ratio) of a differential amplifier must be ___________.
as low as possible 0%
as high as possible 0%
neither too high nor too low 0%
none of the above 0%
The Double Metal MOS process is used to ____________.
increase the metal area 0%
increase the VDD area 0%
increase the VSS area 0%
None of the above 0%
The gain of the CG configuration is __________ the CS configuration.
more than 0%
less than 0%
equal to 0%
The most commonly used model for scaling is ___________ .
constant electric field scaling model 0%
constant voltage scaling model 0%
Both of these 0%
None of these 0%
The separation between the Thinox Regions is of __________ .
The two metal layers are laid in a way that ______________.
the conductors are always parallel 0%
the conductors are always orthogonal 0%
the conductors are always touching 0%
None of the above 0%
Under what condition does the Frenkel defect take place?
A vacancy in the lattice created due to a missing atom 0%
A silicon atom in an interstitial lattice site with an associated vacancy 0%
A non silicon atom in an interstitial lattice site with an associated vacancy 0%
A vacancy in the lattice created due to a missing molecule 0%
Wafers with a____________ are needed for the fabrication of VLSI.
large diameter 0%
small diameter 0%
large length 0%
small length 0%
We need only __________ to make a 2:1 MUX with a pass transistor logic.
14 transistors 0%
7 transistors 0%
6 transistors 0%
5 transistors 0%
What does Fick's law deal with?
Photolithography of wafers 0%
Production of electronic grade silicon(EGS) 0%
Wafer polishing 0%
The diffusion rate of impurities in a semi-conductor 0%
What does the Programmable Logic Array(PLA) consist of?
A programmable AND array and a programmable OR array 0%
A programmable AND array and a fixed OR array 0%
A fixed AND array and a programmable OR array 0%
Fixed AND and OR arrays 0%
What exactly is Behavioral Modeling in VHDL?
A set of concurrent statements 0%
A set of interconnected components 0%
A set of sequential program statements 0%
A set of cumulative statements 0%
What function does the scalar data type perform in VHDL?
It provides element values 0%
It does not provide element values 0%
It provides access to objects of a given type 0%
It provides access to objects that contain a sequence of values 0%
What is Generic Array Logic(GAL) based on?
PROMs 0%
EAROMs 0%
EEPROMs 0%
Flash Memory 0%
What is Metallization in IC Fabrication?
It is a process in which a layer of metal is deposited on a silicon wafer 0%
It is a process in which a wafer is sliced by a metal 0%
It is a process by which the components of an IC are inter connected by an aluminum conductor 0%
It is a process in which a metal base is formed below the surface of a wafer 0%
What is the body effect on the input impedance of the Common Gate Configuration?
It decreases the input impedance 0%
It increases the input impedance 0%
The input impedance is independent of the body effect 0%
None of these 0%
What is the function of the Alias statement?
It declares an alternate name for an existing named entity 0%
It declares the same name again for an existing named entity 0%
It declares a different name for a different entity 0%
It declares the already used name for a different entity 0%
When do Sequential statements appear in a program?
They appear only inside of a process block and subprogram 0%
They appear anywhere in the architecture after begin 0%
They only appear just before the Return statement 0%
They only appear just before the Null statement 0%
When is the Boundary Scan Test (BST) used?
It is used to test the MOS function 0%
It is used to test the fan-out of TTL family 0%
It is used to test the output impedance of MOS 0%
It is used to resolve problems associated with the testing of boards carrying VLSI circuits 0%
Which among the following conditions qualifies for a Latch-up in CMOS circuit condition?
When a high resistance path is established between the drain and the source 0%
When a high resistance path is established between the drain and the gate 0%
When a low resistance path is established between the drain and the source 0%
When a low resistance path is established between the drain and the gate 0%
Which diode is present in the GaAs MESFET circuit?
A Schottky diode at the gate region of GaAs MESFETs 0%
A P-N junction diode at the gate region of GaAs MESFETs 0%
A Zener diode at the gate of GaAs MESFETs 0%
A Photodiode at the gate of GaAs MESFETs 0%
Which execution platform is used for a behaviour-level VHDL?
Simulator 0%
Operating system 0%
Debugger 0%
Real time operating system 0%
Which IEEE standard is used by VHDL 93 ?
IEEE 1164 0%
IEEE 1165 0%
IEEE 1166 0%
IEEE 1167 0%
Which kind of problem is eliminated by the NMOS superbuffers?
Symmetry of the conventional inverter 0%
Low output problem of the conventional inverter 0%
Asymmetry of the conventional inverter 0%
High output problem of the conventional inverter 0%
Which kind of signal is converted into in the common source arrangement of the transistor?
Voltage signal 0%
Current signal 0%
Power signal 0%
No idea 0%
Which of the following can act as a dopant for the formation of N-type gallium arsenide material?
Boron 0%
Silicon 0%
Germanium 0%
Phosphorous 0%
Which of the following is the fastest technology in terms of propagation delay?
CMOS 0%
ECL 0%
BiCMOS 0%
GaAs 0%
Which of the following parameters is advantageous in the case of BiCMOS technology?
Power dissipation 0%
High o/p drive current 0%
High noise margin 0%
Low output drive current 0%
Which of the following statements does not perform any action?
The Wait statement 0%
The Return statement 0%
The Null statement 0%
The Report statement 0%
Which one of the following has the lowest power dissipation?
MOS 0%
bipolar 0%
GaAs 0%
CMOS 0%
Which one of the following is a concurrent statement?
The main statement 0%
The end statement 0%
The process statement 0%
The signal statement 0%
Which one of the following is not a CMOS fabrication technique?
mask-tub 0%
twin-tub 0%
n-well 0%
p-well 0%
Which one of the following is not a mode for ports in VHDL?
IN 0%
OUT 0%
Buffer 0%
Tri-state 0%
Which one of the following is not a sequential statement in VHDL?
The Next statement 0%
The Exit statement 0%
The If statement 0%
The Block statement 0%
Which one of the following is not true about packages in VHDL?
A package is a collection of declarations that more than one design can use 0%
A package cannot be shared by several designs 0%
A package can contain constant data types and subprograms etc 0%
A package has two parts: the declaration and the body 0%
Which one of the following is true about the fabrication of capacitors in the ICs?
For large capacitance, a larger area is required 0%
For large capacitance, a smaller area is required 0%
Large capacitors cannot be fabricated on ICs 0%
The value of capacitance does not depend upon area 0%
Which one of the following stages is used in the Cascode configuration?
CS and CS stage 0%
CG and CG Stage 0%
CS and CG Stage 0%
CG and CS stage 0%
Which one of the following statements is not correct about an entity in VHDL?
An entity is a description of the interface between a design and an external environment 0%
An entity defines the input and output ports of a design 0%
One entity has only one architecture 0%
A design can contain more than one entity 0%
Why is the fabrication of inductors in ICs not practical?
The lateral dimensions are very small as compared to the depth dimensions 0%
The depth dimensions are very small as compared to the lateral dimensions 0%
The width dimensions are very small as compared to the lateral dimensions 0%
The lateral dimensions are very small as compared to the width dimensions 0%