SAFTEY MEASURES DURING AN EARTHQUAKE

Follow these steps in case you feel tremors:
If indoors

1. Drop to the ground; take cover by getting under a sturdy table or other piece of furniture; and hold on until the shaking stops. If there is no table or desk near you, cover your face and head with your arms and crouch in an inside corner of the building.
2. Protect yourself by staying under the lintel of an inner door, in the corner of a room, under a table or even under a bed.
3. Stay away from glass, windows, outside doors and walls, and anything that could fall, (such as lighting fixtures or furniture).
4. Stay in bed if you are there when the earthquake strikes. Hold on and protect your head with a pillow, unless you are under a heavy light fixture that could fall. In that case, move to the nearest safe place.
5. Use a doorway for shelter only if it is in close proximity to you and if you know it is a strongly supported, load bearing doorway.
6. Be aware that the electricity may go out or the sprinkler systems or fire alarms may turn on.
If outdoors

1. Avoid moving. However, move away from buildings, trees, streetlights, and utility wires.
2. If you are in open space, stay there until the shaking stops. The greatest danger exists directly outside buildings; at exits; and alongside exterior walls. Most earthquake-related casualties result from collapsing walls, flying glass, and falling objects.
If in a moving vehicle
1. Stop as quickly as safety permits and stay in the vehicle. Avoid stopping near or under buildings, trees, overpasses, and utility wires.
2. Proceed cautiously once the earthquake has stopped. Avoid roads, bridges, or ramps that might have been damaged by the earthquake.
If trapped under debris

1. Do not light a match.
2. Do not move about or kick up dust.
3.Cover your mouth with a handkerchief or clothing.
4. Tap on a pipe or wall so rescuers can locate you. Use a whistle if one is available. Shout if you have no other way to communicate. Shouting can cause you to inhale dangerous amounts of dust so be careful.....

JKSSB Syllabus for Electrical engineering Latest

https://drive.google.com/file/d/0B7bW_7EtexBANkhMb3RleWo5SjA/view?usp=docslist_api

Jkssb Question

Q:-  A 60 Hz, 4 pole turbo generator rated 100 MVA,13.8 KV has an inertia constant of 10 MJ/MVA. Find the stored energy in the rotor at synchronous speed.








A:  KE=(1/2)MW

         WHERE M=HS/fπ     And     W=2πf
Thus
          Energy=HS=10*100=1000MJ
 

 

JKSSB Electrical Question

Q:-  A 60 Hz, 4 pole turbo generator rated 100 MVA,13.8 KV has an inertia constant of 10 MJ/MVA. Find the stored energy in the rotor at synchronous speed.
 
 
 
 
 
 
 
 
A:  KE=(1/2)MW
 
         WHERE M=HS/fπ     And     W=2πf
Thus
          Energy=HS=10*100=1000MJ
 

 

Important Math Formulas for Competitive exams

1. (a + b)(a – b) = a2 – b2

1. (a + b + c) 2 = a2 + b2 + c 2 + 2(ab + bc + ca)

1. (a ± b) 2 = a2 + b2± 2ab

1. (a + b + c + d) 2 = a2 + b 2 + c 2 + d2 + 2(ab +ac + ad + bc + bd + cd)

1. (a ± b) 3 = a3 ± b3 ± 3ab(a ± b)

1. (a ± b)(a 2 + b2 m ab) = a3 ± b 3

1. (a + b + c)(a 2 + b2 + c 2 -ab – bc – ca) = a 3+ b3 + c 3 – 3abc =
1/2 (a + b + c)[(a – b) 2 + (b – c) 2 + (c – a) 2]

1. when a + b + c = 0, a 3 + b3 + c 3 = 3abc

1. (x + a)(x + b) (x + c) = x 3 + (a + b + c) x 2 +(ab + bc + ac)x + abc
1. (x – a)(x – b) (x – c) = x 3 – (a + b + c) x 2 +(ab + bc + ac)x – abc

1. a4 + a 2b2 + b4 = (a 2 + ab + b 2)( a2 – ab + b2)

1. a4 + b 4 = (a 2 – √2ab + b2 )( a2 + √2ab + b2 )

1. an + b n = (a + b) (a n-1 – a n-2 b + a n-3 b2– a n-4 b 3 +…….. + b n-1 )
(valid only if n is odd)

1. an – bn = (a – b) (a n-1 + a n-2 b + a n-3 b2+ a n-4 b3 +……… + b n-1 )
{where n ϵ N)

1. (a ± b) 2n is always positive while -(a ± b) 2n is always negative, for any real values of a and b

1. (a – b) 2n = (b – a) 2” and (a – b) 2n+1 = – (b– a) 2n+1

1. if α and β are the roots of equation ax 2 + bx+ c = 0, roots of cx” + bx + a = 0 are 1/α and 1/β.

if α and β are the roots of equation ax 2 + bx + c= 0, roots of ax 2 – bx + c = 0 are -α and -β.

Science Introduction: DIA, PARA and FERRO MAGNETISM

Science Introduction: DIA, PARA and FERRO MAGNETISM: ( 1 ) Paramagnetic materials: A material is called paramagnetic, if its molecules / atoms possess permanent magnetic dipole moment. Normally...

Use of can , could ,will , would , may , might

Can

Used to express ability (to be able to do something):

I can make jewelry.
He can’t speak French.
Can you open this jar?

Used to ask for permission:

Can I use your bathroom?
Can I leave now?
Can I raise the volume?

Used to make requests or suggestions:

Can I have more napkins?
Can I have the bill?
You can take this spot if you like.
You can do whatever you want.

Could (past form of can)

Describes an ability that someone had in the past:

I could swim when I was young.
You could see the boat sinking.
They could tell he was nervous.

Often used in auxiliary functions to express permission politely:

Could I take this jacket with me?
You could borrow my umbrella.
Could you please let me pass you?
Could I get you more water?

Used to express possibility:

All of them could ride in the van.
You could always stay at our house.
Could it be true?
This plan could really work out.

May

Used to ask for formal permission:

May I come in?
May I say something now?
May I ask one question?

Used to suggest something that is possible:

She may agree with this plan.
They may not be happy about what
happened.
It may shower tonight.

Might (past form of may)

Used to suggest a smaller possibility than may does (actually,might is more common
than may in American English):

He might have finished it.
I might go see a doctor.
I might not come this time.
It might be right.
You might have lost it.
The store might have been closed today.

Must

Used to express something formally required or necessary:
I
must complete the project by this week.
The government must provide health care for everybody.
Everyone must save the natural resources of the earth.
The building must have a fire alarm.
You must answer my question right now.

Used to show that something is very likely:

He must be a genius.
You must be joking!
There must be an accident.
She must be very tired.

Comparative and Superlative Adjectives

Comparative adjectives compare two things.
Superlative adjectives compare more than
two things
Commonly, adjectives that contain only one
syllable or end in 'y' use 'er' to form
comparatives and 'est' to form superlatives.
For adjectives ending in y, change the 'y' to
'i' before adding the 'er' or 'est'.
old – older – oldest
young – younger – youngest
pretty – prettier – prettiest
long – longer – longest
short – shorter – shortest
bright – brighter – brightest
close – closer – closest
happy – happier - happiest
Adjectives with two or more syllables do not
change but instead add more to form
comparatives and most to form superlatives.
respectable – more respectable – most
respectable
beautiful – more beautiful – most
beautiful
preferable – more preferable – most
preferable
hardworking – more hardworking – most
hardworking
Some adjectives have different forms of
comparatives and superlatives.
good – better – best
bad – worse – worst
little – less – least
much (many) – more – most
far – further - furthest
The word than typically appears in
comparative sentences.
Amy is smarter than Betty.
Chad is stronger than Dan.
Greg is more diligent than his brother.
I have more apples than he.
She likes him more than me.
Superlatives are typically accompanied by the
word the.
Tom is the oldest man in town.
Paul is the tallest boy in the
neighborhood.
That shade of blue is the most beautiful
color.
This is the longest song that I have ever
heard.
dse234dse

What is proxy war ( प्रॉक्सी वॉर क्या है ?)

A proxy war is a conflict instigated by opposing powers who do not fight against each other directly. Instead, they uses third parties to do the fighting for them.

Opposing powers are usually core countries who have conflicting ideologies and interests with each other. However, a direct large-scale war between them would cause enormous damage to all belligerent powers.

Therefore, they rather conduct proxy wars in developing countries in order to avoid loss and achieve some certain interests at the same time.

Third-parties can be local governments built or supported by opposing powers or armed forces, mercenaries and terrorist groups who could strike an opponent without leading to full-scale war.

How does the colour of electric wires signify ( बिजली की तारो के रंग का क्या महत्व है )

You may have seen colourful wires in your home. The colour coding of wire is not for decorative purpose but for safety, as each colour has a crucial role to play. Every colour defines a specific function in the complete electrical system.Electric wires conduct electricity by serving
as a path for an electric current.Universally, a colour code is accepted by all countries with a small difference here
and there. In India, we follow the basic colour coding which is as follows:

Red, brown or yellow : Live wire
Black/Blue : Neutral
Green : Earthing

An electrical system is a complex system with different devices equipped for a specific amount of current.Therefore different wires are used to beef up its efficiency and protection.
A Live wire or a hot wire is used to carry current to the device to run it. The most common colour used in India is red. It carries current that runs fan, lights etc. A neutral wire offers a return path to the
current when it is in excess Sometime the voltage fluctuates causing a huge amount
of current to flow. Neutral, as the name explains, neutralizes by buffering the extra current and sending it backward. Earthing wire is for safety and avoids
electrocution. This wire is very important
for electric devices made of a metal that conducts electricity eg: aluminum. By
chance a device conducts electricity; it may cause an electric shock. An earthing
wire will complete the circuit by carrying
the current to ground thus avoiding electric
shock dangers.
This colour code may differ therefore it is
advisable to hire a qualified electrician to
deal with faulty wires. Live wires must
never be touched bare handed. On a lot of
occasions, the earthing wire may be
missing or may not be installed in the
electric system. We would emphasize on
its installation everywhere. It helps in
minimizing electric shock dangers.

HOW TO SOLVE SYLLOGISM

Rule 1: The middle term must be
distributed at least once.
Fallacy: Undistributed middle
Example:
All sharks are fish
All salmon are fish
All salmon are sharks
Justification : The middle term
is what connects the major and
the minor term. If the middle
term is never distributed, then
the major and minor terms
might be related to different
parts of the M class, thus giving
no common ground to relate S
and P.
Rule 2: If a term is distributed in
the conclusion, then it must be
distributed in a premise.
Fallacy: Illicit major; illicit minor
Examples :
And:
All horses are animals
Some dogs are not horses
Some dogs are not animals
All tigers are mammals
All mammals are animals
All animals are tigers
Justification : When a term is
distributed in the conclusion,
let’s say that P is distributed,
then that term is saying
something about every member
of the P class. If that same term
is NOT distributed in the major
premise, then the major premise
is saying something about only
some members of the P class.
Remember that the minor
premise says nothing about the
P class. Therefore, the
conclusion contains information
that is not contained in the
premises, making the argument
invalid.
Rule 3: Two negative premises
are not allowed.
Fallacy: Exclusive premises
Example:
No fish are mammals
Some dogs are not fish
Some dogs are not mammals
Justification : If the premises
are both negative, then the
relationship between S and P is
denied. The conclusion cannot,
therefore, say anything in a
positive fashion. That
information goes beyond what
is contained in the premises.
Rule 4: A negative premise
requires a negative conclusion,
and a negative conclusion
requires a negative premise.
(Alternate rendering: Any
syllogism having exactly one
negative statement is invalid.)
Fallacy: Drawing an affirmative
conclusion from a negative
premise, or drawing a negative
conclusion from an affirmative
premise.
Example:
All crows are birds
Some wolves are not crows
Some wolves are birds
Justification : Two directions,
here. Take a positive conclusion
from one negative premise. The
conclusion states that the S class
is either wholly or partially
contained in the P class. The
only way that this can happen is
if the S class is either partially or
fully contained in the M class
(remember, the middle term
relates the two) and the M class
fully contained in the P class.
Negative statements cannot
establish this relationship, so a
valid conclusion cannot follow.
Take a negative conclusion. It
asserts that the S class is
separated in whole or in part
from the P class. If both
premises are affirmative, no
separation can be established,
only connections. Thus, a
negative conclusion cannot
follow from positive premises.
Note: These first four rules
working together indicate that
any syllogism with two
particular premises is invalid.
Rule 5: If both premises are
universal, the conclusion cannot
be particular.
Fallacy: Existential fallacy
Example:
All mammals are animals
All tigers are mammals
Some tigers are animals
Justification : On the Boolean
model, Universal statements
make no claims about existence
while particular ones do. Thus,
if the syllogism has universal
premises, they necessarily say
nothing about existence. Yet if
the conclusion is particular,
then it does say something about
existence. In which case, the
conclusion contains more
information than the premises
do, thereby making it invalid.
The Aristotelian Standpoint
Any syllogism that violates any
of the first four rules is invalid
from either standpoint. If a
syllogism, though, violates only
rule 5, it is then valid from the
Aristotelian standpoint,
provided that the conditional
existence is fulfilled. Thus, in the
example above, since tigers
exist, this syllogism is valid from
the Aristotelian point of view.
On the other hand, consider this
substitution instance:
All mammals are animals
All unicorns are mammals
Some unicorns are animals
Since "unicorns" do not exist,
the condition is not fulfilled,
and this syllogism is invalid
from either perspective.
In order to determine the
needed condition, you can
simply consult the chart (but not
on the exam!). But there are two
other ways. First, as we learned
in section 5.2, you can draw a
Venn diagram and find the
circle with only one open area.
The term that that circle
represents is the required
existent thing. Second, you can
check the distributions and, in
these cases, there will always be
one term that is superfluously
distributed. That is, there will be
one term that is distributed
more than is necessary to insure
the validity of the syllogism.
Examples:
All Md are P
All Sd are M
Some S are P
No Md are Pd
All Md are S
Some S are not Pd
All P d are M
All Md are S
Some S are P