Sunday, December 20, 2009


Man can only make efforts

Man can not do any thing

Nothing in the hands of man

Everything is done by someone else. This some one u may call Him God, Time, Nature, Supreme Power etc.




Suppose the rectangle above to be the Universe
The circle represents the Solar System
Now try to find the earth in this solar system
Now find the Continent in which your country is on this earth
Now find the Country, then state, then lane/colony in which u live
Now find the building in which u r right now
And then the room in which u r

Now, think of your largeness in this world

This is your - “I” ( “मैं” )

Love of GOD

FROM: TOI Sacred Space

Maths Metaphysics

What equals 100% ?
What does it mean to give more tahn 100% ?
Ever wonder about those people who say they are giving more than100 % ?
We have all been in situations where someone wants you to GLIVE OVER 100 %.

How about ACHIEVING 101 % ?
What equals 100 % in life ?
Here's a little mathematical formula that might help answer these quastions:

IF
a b c d e f g h i j k l m n o p q r s t u v w x y z are represented as :
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

IF
H-A-R-D-W-O-R-K = 8+1+18+4+23+15+18+11 = 98 %
K-N-O-W-L-E-D-G-E = 11+14+15+23+12+5+4+7+5 = 96 %

BUT
A-T-T-I-T-U-D-E = 1+20+20+9+20+21+4+5 = 100 %

THEN look how far the Love of God will take you:

L-O-V-E-O-F-G-O-D = 12+15+22+5+15+6+7+15+4 = 101 %

Therefore one can conclude with mathematical certainty that:
While Hard Work and Knowledge will get you close, and Attitude will get you there, it's the Love of God that will put you over the top!

Linear Control System; some useful points

Simple Poles and Simple Zeros (not much important for C.S. Paper)
Poles or zeros are said to be simple if they are not repeated. Means in the term s(s+a)/s(s+b) …… there is no term with power greater than 1: like s(s+a)2/(s+b) this term has multiple zeros at s = a;

Type and Order of the system (V. Very IMPORTANT)
Type of the system is defined for the Open Loop Transfer Function (G(s) H(s)):
Type or number of the system is the no. of integrators in the system.
It is equal to the no. of poles at the origin.
Means power of s in the denominator.
Type 0 system: G(s)H(s) = K(s+T1)(s+T2)………. / (s+Ta)(s+Tb)……..
Type 1 system: G(s)H(s) = K(s+T1)(s+T2)………. / s(s+Ta)(s+Tb)……..
Type 2 system: G(s)H(s) = K(s+T1)(s+T2)………. / s2(s+Ta)(s+Tb)……..

Error constants depends upon type of the system and the input signals.
# Power of s in the numerator indicates the no. of differentiators in system.


Order of the system is obtained by degree of the characteristic equation. Means power of s in the denominator of the close loop transfer function (1 + G(s) H(s))
Please check this definition not sure. Refer R.S. Chauhan 1st or 2nd chapter



EveryThing is available in the books
For some doubts or errors refer and prefer Books
Same thing is available in the attachment.

1) very important topic is Nyquist plot and also easy one
first study POLAR PLOT

Nyquist plot is just = Polar Plot + It’s Image about real(x) axis

- image ki direction reverse leni hai
- direction w = 0 se w = infinity ki taraf hoogi
w means omega

Nyquist criteria is a very simple one
Just first Practice various polar plots for different addition of poles and zeros and their effects.

2) when u start studying c.s. do have a print out of following major points with u
that will help u to understand
and then solve problems in Q.Paper

Major Points

1) for a close loop system
forward transfer function is G(S)
feedback transfer function is H(s)
Then
close loop transfer function is G(s)/(1+G(s)H(s))
open loop transfer function is G(s)H(s)

now:
characteristic eqn. is: 1 + G(s)H(s) = 0 ;
and the roots of characteristic eqn.
(means the values of s for which c.eqn. becomes = 0 and hence
close loop (or overall) t.f. becomes infinite) are the poles of
close loop transfer function
(*Remember that c.eqn. is for close loop transfer fuction)

s is a complex no. = sigma + j omega ;
hence G(s)H(s) = G(jw)H(jw) = LG(jw)H(jw) |G(jw)H(jw)|
here L means angle's symbol

Root locus, Bode plot, and Nyquist plot are all drawn on the basis of
open loop transfer function G(s)H(s)
But give the solutions for poles of close loop transfer function G(s)/(1+G(s)H(s))
and the roots of c.equation.

Because sometimes it become very difficult to find the roots of c.eqn. directly by solving it

moreover it contains the term K which might be present in numerator of G(s) in addition term
K is usually the Gain term and we want to analyse the system for various values of Gain 'K'

Also the value of 'K' decides the stability and accuracy of the system
so these plots are more useful to analyse the system as compared to solve the c.eqn. for different values of 'K'

One Major Point
c.eqn. is: 1 + G(s)H(s) = 0 => G(s)H(s) = -1 is the locus of poles of t.f. or the roots of c.eqn. or the root locus
This condition is satisfied when

|G(s)H(s)| = 1 and
LG(s)H(s) = 180 degree

using this u can find that whether a point lies on root locus or not

some IAS Exams Ques

IAS Exams Ques : Taken from the internet

Q.How can you drop a raw egg onto a concrete floor without cracking it?



A.Concrete floors are very hard to crack! (UPSC Topper)

Q.If it took eight men ten hours to build a wall,how long would it take four men to build it?



A. No time at all it is already built. (UPSC 23 Rank Opted for IFS)

Q.If you had three apples and four oranges in one hand and four apples and three oranges in the other hand, what would you have?



A. Very large hands.(Good one) (UPSC 11 Rank Opted for IPS)

Q. How can you lift an elephant with one hand?




A. It is not a problem, since you will never find an elephant with one hand. (UPSC Rank 14 Opted for IES)

Q. How can a man go eight days without sleep?




A. No Probs , He sleeps at night. (UPSC IAS Rank 98)

Q. If you throw a red stone into the blue sea what it will become?




A. It will Wet or Sink as simple as that. (UPSC IAS Rank 2)

Q. What looks like half apple ?




A : The other half. (UPSC - IAS Topper )

Q. What can you never eat for breakfast ?




A : Dinner.

Q. What happened when wheel was invented ?




A : It caused a revolution.

Q. Bay of Bengal is in which state?




A : Liquid (UPSC 33Rank )

for some su

Dedicated to Su

अंग्रेज चले गए, अंग्रेजी छोड गए
गांधी चले गए, गांधीगिरी छोड गए
ऐश्वर्या चली जाएगी, अपनी खूबसूरत आँखें छोड जाएगी

अंग्रेजी - बडे काम की चीज
गांधीगिरी - बडे काम की चीज
आँखें - बडे काम की चीज

Even, Google and its services
बडे काम की चीज

So why should I not leave something when going from this world?
I’ll leave this ‘blog’

Think Positive

10 minutes of positive thinking counter-balances ur whole day negative thoughts
so Think Positive
Now Question arises How can we think positive ???
We know there are various good effects of positive thinking on our
heart, body, mind and soul
and our life and enviornment
but still we are not always positive !!!

A way to think positive may be :
1) Meditate for 10 minutes
2) Think: only after one second, u r going to die and now, how should u spend this moment !! Happily or thinking negative and abusing someone
3) Just remember "Gita Saaar" as :

please see the previous blog for geeta saar.

any more suggestions most welcome

geeta saar

गीता सार
क्यों व्यर्थ की चिंता करते हो? किससे व्यर्थ डरते हो? कौन तुम्हें मार सकता है? आत्मा ना पैदा होती है, न मरती है।
जो हुआ, वह अच्छा हुआ, जो हो रहा है, वह अच्छा हो रहा है, जो होगा, वह भी अच्छा ही होगा। तुम भूत का पश्चाताप न करो। भविष्य की चिन्ता न करो। वर्तमान चल रहा है।
तुम्हारा क्या गया, जो तुम रोते हो? तुम क्या लाए थे, जो तुमने खो दिया? तुमने क्या पैदा किया था, जो नाश हो गया? न तुम कुछ लेकर आए, जो लिया यहीं से लिया। जो दिया, यहीं पर दिया। जो लिया, इसी (भगवान) से लिया। जो दिया, इसी को दिया।
खाली हाथ आए और खाली हाथ चले। जो आज तुम्हारा है, कल और किसी का था, परसों किसी और का होगा। तुम इसे अपना समझ कर मग्न हो रहे हो। बस यही प्रसन्नता तुम्हारे दु:खों का कारण है।
परिवर्तन संसार का नियम है। जिसे तुम मृत्यु समझते हो, वही तो जीवन है। एक क्षण में तुम करोड़ों के स्वामी बन जाते हो, दूसरे ही क्षण में तुम दरिद्र हो जाते हो। मेरा-तेरा, छोटा-बड़ा, अपना-पराया, मन से मिटा दो, फिर सब तुम्हारा है, तुम सबके हो।
न यह शरीर तुम्हारा है, न तुम शरीर के हो। यह अग्नि, जल, वायु, पृथ्वी, आकाश से बना है और इसी में मिल जायेगा। परन्तु आत्मा स्थिर है - फिर तुम क्या हो?
तुम अपने आपको भगवान के अर्पित करो। यही सबसे उत्तम सहारा है। जो इसके सहारे को जानता है वह भय, चिन्ता, शोक से सर्वदा मुक्त है। जो कुछ भी तू करता है, उसे भगवान के अर्पण करता चल। ऐसा करने से सदा जीवन-मुक्त का आनंन्द अनुभव करेगा।