QUIZLE - Who Wants To Be An Quizmaster ?: 2009

Thursday, December 3, 2009

GATE 2010 GENERAL APTITUDE SAMPLE TEST : PART I

What's New in GATE 2010?

Q.56 to Q.60 : From General Aptitude (GA) will carry one mark each (sub-total 5 marks). 1/3 mark will be deducted for each wrong answer.
Q.61 to Q.65 : From GA will carry two marks each (sub-total 10 marks) 2/3 mark will be deducted for each wrong answer

We all know that GA section has been introduced in GATE examination from this year.I think GA section will be the deciding factor when it comes to ranking and GATE score. It carries 15 marks i.e. 5 X 1 + 5 X 2.

GATE 2010 General Aptitude Question Pattern

This is hot topic as far as GATE 2010 discussion is considered. Wherever you go - forums, edu-blogs there is vibrant discussion of "What will GA section include?".
Some possible combinations are:

5Qs QA + 5Qs DI

5Qs QA + 5Qs DS

5Qs QA + 5Qs (DI + DS)

Mixed Bag

QA : Quantitative Analysis, DI : Data Interpretation, DS : Data Sufficiency

From my opinion the most probable case is second. But nobody can assure you about this and we have to prepare for everything that we think possible!

How and What to Prepare

If everything goes as depicted above, it will be fine for most of us. Specially for those who have tons of experience from pre-final year in solving pre-recruitment tests or preparing for CAT, GMAT entrance examinations.

ONLINE GATE 2010 GENERAL APTITUDE TEST - CLICK HERE

Monday, November 16, 2009

GATE EC PRACTICE TEST : ELECTRONIC DEVICES : PART - I

First practice test in this series.

CLICK HERE ---> ONLINE TEST : GATE EC ELECTRONIC DEVICES - I

Wednesday, November 4, 2009

GATE EC PRACTICE TESTS : ANALOG CIRCUITS-PART-IV : LINEAR CIRCUITS AND POWER AMPLIFIERS

Well ! You must be waiting for this! Last test in this series, which is based on linear circuits and power amplifiers. MCQs included in the test are from previous GATE papers (1992 to 2004 - to be specific). Difficulty level is normal. No linked questions or common data questions. Few questions are figure based numerical problems and remaining are theory based questions.

POINTS YOU SHOULD ALSO KNOW :

**DIODES : Transition,diffusion capacitance,breakdown mechanisms
**DIODE CIRCUITS : Clippers, clampers, rectifiers (half,full,bridge with filter analysis)
**BJT/FET : biasing circuits, stability, small signal analysis and parameters
**AMPLIFIERS : multistage, effect of feedback with analysis,Miller's theorem, frequency response - cut-off frequencies and their dependency
**OP-AMPS : op-amp configurations, typical circuits, active filters, function generators,555 timers
**OSCILLATORS : Sinusoidal oscillators(Berk Hausen Criteria), LC(Hartley, Colpitts, Clapp),RC(Phase Shift, Wein Bridge),XTAL(Piezo)

--->>>---CLICK-HERE--->>>GATE EC PRACTICE TEST:ANALOG CIRCUITS-PART-IV : LIC/PA---<<<---

Saturday, October 31, 2009

GATE EC PRACTICE TEST : ANALOG CIRCUITS : PART III :- BJT/FET

Hola !!!
This is the third test in 'analog circuits' practice tests series. All MCQs are BJT/FET numerical based with figures and elaborate explanation. Main point covered is FET and BJT small signal analysis.Hope you like this one. Now remaining last test in this series will be based on Linear circuits and power amplifiers.As it is not possible to include each and every point in the syllabus,I have taken only important points for tests. In the last post on this topic I will highlight the points which I missed out during this test series.

--->>>---C-L-C-K-H-E-R-E--->>>---GATE EC PRACTICE TEST : ANALOG CIRCUITS : PART - III - BJT/FET --->>>--->>>

Thursday, October 29, 2009

GATE EC PRACTICE TEST : ANALOG CIRCUITS PART - II

The second in this series. I have tried to include some figure based numerical problems and common data or linked answer type questions. I'll add one more test on this topic containing linear circuits based questions. But still I think BJT and FET part is not covered completely by any of the tests so will add one more test solely belonging to these three terminal devices.

Go Here To Give Online Test :

-->>>-C-L-I-C-K->>>-H-E-R-E->>> GATE EC PRACTICE TEST : ANALOG CIRCUITS - PART - II

Tuesday, October 27, 2009

GATE EC PRACTICE TEST : ANALOG CIRCUITS - PART - I

Analog Circuits is the most important topic as far as GATE scoring is considered. It is the core of electronics engineering field . Most of the numerical questions and linked answer questions in GATE EC paper come from this subject and the questions on frequency responses of amplifiers, cut-off frequencies, FET parameters, transistor biasing are most common. I am starting series of tests on this topic. First test consists only simple theoretical concepts and few direct formula based numericals.

Please do comment here if you like/dislike. Your feedback is appreciated and is valuable. I will try my best to post tests on daily basis,so check blog frequently if you haven't subscribed.

GATE EC PRACTICE TEST : ANALOG CIRCUITS - I

Sunday, October 25, 2009

GATE EC PRACTICE TEST : COMMUNICATIONS

New practice test added on 'communications' topic in examzone section of iQuizzle. this will surely examine your preparation in communications topic. This is very important and interesting part as far as GATE examination is considered.Figure below, analyzes topic wise weightage in previous GATE papers. You will find how important communications is from GATE point of view.
Click on image to zoom.

CLICK HERE--> ONLINE PRACTICE TEST : GATE EC : COMMUNICATIONS

Wednesday, October 21, 2009

GATE STUDY MATERIAL : LECTURES BY IIT PROFESSORS :- CIRCUIT THEORY & DIFFERENTIATION(Maths) : DIRECT DOWNLOAD LINKS

Here ,I am posting direct download links of all the lectures by IIT professors on CIRCUIT THEORY and Differentiation(Mathematics) topic. Please visit this page to see them

GATE EC Study Material IIT LECTURES : CIRCUIT THEORY & Diffrentiation(Mathematics)

Wednesday, October 14, 2009

GATE MATHEMATICS : CALCULUS

ONLINE TEST : GATE MATHS :- CALCULUS

Chain Rule :

Let w = f(x,y,z) be continuous and have continuous first partial derivative in a domain D in xyz-space. Let x = x(u,v), y = y(u,v), z = z(u,v) be functions that are continuous and have first partial derivatives in a domain B in the uv-plane, where B is such that for every point (u,v) in B, the corresponding point [x(u,v), y(u,v), z(u,v)] lies in D. Then the function

w = f(x(u,v), y(u,v), z(u,v))

is defined in B, has partial derivatives w.r.t. u and v in B,

$\bg_white \frac{\partial w}{\partial u} = \frac{\partial w}{\partial x}\frac{\partial x}{\partial u} + \frac{\partial w}{\partial y}\frac{\partial y}{\partial u} + \frac{\partial w}{\partial z}\frac{\partial z}{\partial u}$

$\bg_white \frac{\partial w}{\partial v} = \frac{\partial w}{\partial x}\frac{\partial x}{\partial v} + \frac{\partial w}{\partial y}\frac{\partial y}{\partial v} + \frac{\partial w}{\partial z}\frac{\partial z}{\partial v}$

Mean Value Theorem :

Let f(x,y,z) be continuous and have continuous first partial derivative in a domain D in xyz space. Let P₀ :(x₀,y₀,z₀) and P : (x₀ + h,y₀ + k,z₀ + l) be points in D such that the straight line segment P₀P joining these points lies entirely in D. Then

$\bg_white f(x_0 + h, y_0 + k, z_0 + l) - f(x_0,y_0,z_0) = h\frac{\partial f}{\partial x} + l\frac{\partial f}{\partial y} + l\frac{\partial f}{\partial z}$

Indefinite Integrals :

If f(x) and F(x) are two functions of x such that
d/dx{f(x)} = F(x), then integral of F(x) is

$\bg_white \int F(x) dx = f(x) + c$
where c is any constant. Due to the addition of 'c' it is an indefinite integral.

Definite Integrals

If f(x) is a continuous functions of x in [a,b] and ψ(x) is another function of x such that

$\bg_white \frac{d}{dx}{[\psi (x)]} = f(x)$
then
$\bg_white \int_{a}^{b}f(x)dx = \psi (b) - \psi (a)$

Theorem of Integral Calculus :

$\bg_white \int_{a}^{b}f(x)dx = \lim_{h\rightarrow 0} h[f(a) + f(a + h) + f(a + 2h) + . . . + f(a + (n - 1)h]\\\\ where n = \infty, h = 0, nh = b - a$

Gamma Function :

$\bg_white \Gamma{n} = \int_{0}^{\infty} e^{-x} x^{n-1}dx,\\\\ where\\ n\ is\ a\ positive\ integer.$

Beta Function :

$\bg_white \Gamma{n} = \int_{0}^{\infty} e^{-x} x^{n-1}dx,\\\\ where\\ n\ is\ a\ positive\ integer.$

Euler's Theorem on Homogeneous Function:

If z is homogeneous function of x, y of order n, then

Taylor's Series of Two Variables :

If f(x, y) and all its partial derivatives up to nth order are finite and continuous for all points (s, y),
where a ≤ x ≤ a + h, a ≤ y ≤ a + k
Then

$\bg_white f(a+h, b+k ) = f(a,b) + (h\frac{\partial}{\partial x} + k\frac{\partial}{\partial y})f\\ + \frac{1}{2!}(h\frac{\partial}{\partial x} + k\frac{\partial}{\partial y})^{2}f + \frac{1}{3!}(h\frac{\partial}{\partial x} + k\frac{\partial}{\partial y})^{3}f = ...$

Maximum Value Theorem:

A function of x,y will be the maximum at x = a, y = b.

if f(a, b) > f(a+h, b+k)
or
if f(a+h, b+k) - f(a,b) < 0, then f(a,b) is maximum.

Minimum Value Theorem

A function of x,y will be the minimum at x = a, y = b.

if f(a, b) < f(a+h, b+k) or if f(a+h, b+k) - f(a,b) > 0, then f(a,b) is minimum.

Line Integral :

If $\bg_white \overrightarrow F (x, y, z)$ is a vector function.
Then Line Integral of $\bg_white \overrightarrow F$ along any given curve DC will be
$\bg_white \int_{c}\left [F . \frac{d\overrightarrow r}{ds} \right ]ds$

where $\bg_white \int_{c}^{}\left [F . \frac{d\overrightarrow r}{ds} \right ]ds$ is a unit vector along tangent of curve PQ

$\bg_white \int_{c} \left [F . \frac{d\overrightarrow r}{ds} \right ]ds$

Surface Integral :

Surface integral of $\bg_white \overrightarrow F$ over S is given surface

$\iint_{s} \left (\overrightarrow F . \hat n \right) ds$
where
$\bg_white \hat {n} = \frac{grad\ f}{|grad\ f|}.dS = \frac{dx . dy}{\left((\hat n . k)\right)}$

Volume Integral :

Volume integral of over the volume V enclosed by a closed surface.

$\bg_white \ =\ \int \iint_{V} \overrightarrow F . dV$

Green's Theorem :

$\bg_white \oint _{C} (\phi dx + \psi dy) = \iint_{R}\left (\frac{\partial \psi}{\partial x} - \frac{\partial \phi}{\partial y}\right )dxdy$
where
$\bg_white \phi (x,y), \psi (x,y), \frac{\partial \phi}{\partial y},\frac{\partial \psi}{\partial x}$
are continuous function over a region R bounded by simple closed curve C in x-y plane.

Stroke's Theorem :

$\bg_white \oint \overrightarrow F . d\overrightarrow r = \iint_{S}\left (\bigtriangledown X \overrightarrow F\right ).\overrightarrow n dS \\\\ =\iint_{S}\left (\bigtriangledown X \overrightarrow F\right ).dS \\\\\\ where\\ \hat n = cos \alpha\ \hat i + cos \beta\ \hat j + + cos \gamma\ \hat k\\$

is unit external normal to any surface dS.

Gauss's Theorem of Divergence :

The surface integral of the normal component of a vector function $\bg_white \overrightarrow F$ taken around a closed surface S is equal to the integral of the divergence of $\bg_white \overrightarrow F$ taken over the volume V enclosed by the surface S.
$\bg_white \iint_{S}\overrightarrow F.\hat n .dS = \int \iint_{V} div \overrightarroe F dV$

Monday, October 5, 2009

GATE Mathematics : Linear Algebra

ONLINE TEST : GATE MATHS :- LINEAR ALGEBRA

Important Types Of Matrices :

1) Null/ Zero matrix : all elements are zero

2) Diagonal Matrix : square matrix whose all non-diagonal elements are zero.

3) Scalar matrix : diagonal matrix whose all diagonal elements are
equal to zero.

4) Symmetric matrix : In a Square matrix for all i and j , a_ij = a_ji

5) Skew Symmetric Matrix : A square matrix is called skew symmetric matrix if
i)for all i and j , a_ij = - a_ji
ii) All diagonal elements are zero.

6) Upper Triangular Matrix : A triangular matrix whose elements below the leading diagonal are zero .

7) Orthogonal Matrix : AA^T = I

8) Matrix A^θ : = (conjugate of A)^T

9) Unitary Matrix : A^θA = I

10) Hermitian Matrix : i) a_ij = conjugate of a_ji
ii) A = A^θ

11) Idempotent Matrix : A² = A

12) Periodic matrix : A^k+1 = A

13) Nilpotent Matrix : A^k = 0,k>0

14) Involuntary Matrix : A² = I

15) Adjoint of A Matrix : adj. A is the transpose of the matrix of co-factors of any matrix A.

16) Inverse Matrix : A^-1 = 1/|A| adj. A

** Rank of Matrix :

The rank of matrix is 'r' if

a) It has at least one non-zero minor of order 'r'.

b) every minor of 'A' of order higher than 'r' is zero.

i.e. Rank = No. of non-zero rows in upper triangular matrix.

Rank of augmented matrix A^ defining any given set of linear equations and coefficient matrix C decides type of solution:

1) Consistent Equations : Rank A^ = Rank C

i) Unique solution : Rank A^ = Rank C = n, n => No. of unknowns

ii) Infinite Solution : Rank A^ Rank C = m, m < n 2) Inconsistent Equations : Rank A^ != Rank C No Solution Possible.

Rank of Matrix and Matrix Dependency :

Vectors A1, A2, ..An are said to be dependent if :

1) all vectors are of same order

2) n scalars a1,a2, ..an (at least one non-zero) exist as

a1.A1 + a2.A2 + ...+an.An = 0

Otherwise they are linearly independent.

**Rank of matrix A is maximum no. of linearly independent row vectors of A or no. of linearly independent column vectors of A
Hence A and A^T has same rank..

** m vectors with n components each are linearly independent if if the matrix with these vectors as row vectors has rank m, but they are linearly dependent if that rank is less than m.

TERMS YOU SHOULD ALSO KNOW :

LINEAR SYSTEM, HOMOGENEOUS AND NON-HOMOGENEOUS SYSTEMS, STOCHASTIC MATRIX, TRIVIAL SOLUTION, GAUSS ELIMINATION, ROW EQUIVALENT SYSTEMS, ECHELON FORM, VECTOR SPACE, ROW SPACE, COLUMN SPACE, CRAMER'S RULE, MINORS AND CO-FACTORS, GAUSS-JORDAN ELIMINATION.

Tuesday, September 22, 2009

GATE ELECTRONICS AND COMMUNICATION SOLVED QUESTION PAPER 2006 SECTION 1

GATE electronics and communication solved question paper 2006 section 1.

Please Visit AllAboutGate.Tk

Tuesday, September 8, 2009

GATE ELECTRONICS AND COMMUNICATION SOLVED QUESTION PAPER 2009

Here it comes!
GATE EC - 2009 ,solved question paper. Second in this series. Don't forget to reply ! Coming soon - GATE EC - 2008 !

GATE ELECTRONICS AND COMMUNICATION SOLVED QUESTION PAPER 2009

Thursday, September 3, 2009

GATE ELECTRONICS AND COMMUNICATION SOLVED QUESTION PAPER 2007

Hi Friends

I am starting new section -AllAboutGate.Tk Section. This new website is all about GATE !Here you will find previous years GATE question papers-fully solved. There won't be any plain question papers but interactive GATE exam ..So solving paper is more of a fun than boring monotonous tests available on net.When your answer is wrong ,you will find explanation for correct answer on results page. Do comment on main site if you find any bugs. Right now I have started this section with GATE EC -2007 question paper..but I will add more papers soon....GATE 2009 paper is coming soon ..!

GATE ELECTRONICS AND COMMUNICATION SOLVED QUESTION PAPER 2007 -QUIZLE - GATE SECTION

Thursday, August 13, 2009

BSNL JTO-2008 GENERAL AWARENESS TEST PAPER

This quiz includes 20 MCQs from General Awareness section of BSNL JTO EXAM-2008. All questions are answered correctly in the best possible way. Still if you come across any wrongly answered question or want more explanation of any answer ,you may comment it here or can email me.

BSNL JTO-2008 GENERAL AWARENESS TEST PAPER

Wednesday, August 12, 2009

VISIT QUIZLE--->WHO WANTS TO BE AN QUIZMASTER ?

For all the latest tests,quizzes and info visit my website

VISIT QUIZLE--->WHO WANTS TO BE AN QUIZMASTER ?

LATEST BOOKS AND AUTHORS:CRICKET

This test contains 11 MCQ related to some famous and controversial autobiographies of famous Cricketers...So go and check your "cricketing" knowledge.

LATEST BOOKS AND AUTHORS-CRICKET

Friday, July 24, 2009

GAIL ET-2009 SAMPLE TEST PAPER-GENERAL AWARENESS

Hi friends !
I have compiled some general awareness questions for upcoming GAIL ET-2009 pre-recruitment exam...Click the link at the end of the post to take the test.Many tests are coming soon.All the questions are multiple choice..If you like the Test,don't miss to comment...If you find any bug,comment it here.
.........Vaibhav

Thursday, December 3, 2009

What's New in GATE 2010?

GATE 2010 General Aptitude Question Pattern

How and What to Prepare

Monday, November 16, 2009

Wednesday, November 4, 2009

POINTS YOU SHOULD ALSO KNOW :

Saturday, October 31, 2009

Thursday, October 29, 2009

Tuesday, October 27, 2009

Sunday, October 25, 2009

Wednesday, October 21, 2009

Wednesday, October 14, 2009

Chain Rule :

Mean Value Theorem :

Indefinite Integrals :

Definite Integrals

Theorem of Integral Calculus :

Gamma Function :

Beta Function :

Euler's Theorem on Homogeneous Function:

Taylor's Series of Two Variables :

Maximum Value Theorem:

Minimum Value Theorem

Line Integral :

Surface Integral :

Volume Integral :

Green's Theorem :

Stroke's Theorem :

Gauss's Theorem of Divergence :

Monday, October 5, 2009

Important Types Of Matrices :

** Rank of Matrix :

Rank of Matrix and Matrix Dependency :

**TERMS YOU SHOULD ALSO KNOW : **

Tuesday, September 22, 2009

Tuesday, September 8, 2009

Thursday, September 3, 2009

Thursday, August 13, 2009

BSNL JTO-2008 GENERAL AWARENESS TEST PAPER

Wednesday, August 12, 2009

Friday, July 24, 2009

GAIL ET-2009 SAMPLE TEST PAPER-GENERAL AWARENESS

TERMS YOU SHOULD ALSO KNOW :