Q.
& A.s ‑‑‑
SCI. & TECH.
– 25
676Q. What things can positively effect our personality?
1.
Physique
2.
Problem solving
3.
Logical thinking
4.
Proactive attitude
677Q. How things are different?
“APPLE” is
different because of design
“Intel” is different because of constantly
increase micro processor power
“Dell” is
different because of knowledge of supply chain
“Exxon-Mobil” is different because of world
class quality.
“MRF” is
different because of
“NOKIA” is different because of
“IBM” is
different because of
“TAJ”
is
different because of great hospitality
678Q. What is called six-horse chariot?
Every successful company has a six-horse
chariot. They need to pull it in the same direction at the same time, with the
same energy.
They are
1] Domain
2] Tools
3] Methodology
4] Quality
5] Innovation
6] Branding
679Q. How does a Team Composition be?
1] Proven
competence
2] Complementary composition
3] Multitasking capability
4] shared vision
5] transparency
6] mutual trust
7] ability to question
8] resilience
9] sense of humour
680Q. Entrepreneurship is a matter of global priority. Why?
1] jobs provide people with livelihoods.
2] without livelihood people die.
3] livelihood give security.
4] people raise families
5] people explore own potentialities
6] entrepreneurship is a global priority.
681Q. What should you ask yourself to determine to be an entrepreneur?
1] can
you take important decisions.
2] can
you enjoy the process
3] can
you make friends with a stranger
4] can
you feel comfortable to ask for help
5] can
you like meeting people
6] can
you see things to completion.
682Q. What is freedom?
1] answerability
2] accountability
3] yes as yes,
no as no
4] disciplined
5] write, revise, rewrite
683Q. How does North Pole drift? [16-5-2013
The Hindu p.12]
When
mass is lost in one part of a spinning sphere, its spin axis will tilt directly
towards the position of the loss.
The
melting ice has also increased the rate of drift from about two milliarcseconds
per year during the period 1982-2005 to about nine milliarcseconds per year
post 2005.
The
changes were recorded by satellite gravity measurements by the Gravity Recovery
and Climate Experiment mission.
684Q. What is Pokkali farming?
Pokkali
farming is a typical farming system in which paddy and shrimp cultures are
alternatively done in the same field.
685Q. Why do ants favour feeding on sugary products?
The
foragers might collect the protein-rich food for the queen, when she is
actively laying the eggs.
Protein
rich foods are preferred when the colony has a high larval population.
When
the colony has no larvae, the foragers preferably gather the sugar-rich foods,
because adult colonies consuming protein-rich food have extremely high
mortality due to protein toxicity.
Even
if they find a food which is rich in protein but poor in sugar, they extract
the sugars and eject the protein as a waste.
It
is quite normal to see the foragers attracted towards sugary products unless
;there is a demand for protein by the egg-laying queen or the larvae.
686Q. What are the effects of LEDs?
Light Emitting Diode
These are widely used in TVs, Computer screens,
laptops, etc.
The
cumulative effects of sleep loss and sleep disorders have been associated with
a wide range of deleterious health consequences.
It
includes increased risk of hypertension, diabetes, obesity, depression, heart
attack and stroke.
Now-a-days
technology has made our life 24 hours
working day.
687Q. What are the secrets of
Cuba’s development?
1.
The urbanites are to be encouraged to invest in
village areas.
2.
Health is given the highest priority
3.
Agricultural waste should be recycled there only
4.
The urbanites should work in villages for at
least one year
5.
Agriculture should be developed in urban areas.
6.
Anything relating to health if given the highest
priority
Etc.
688Q. What is called “Abuzmad”?
It lies in Chattish Garh.
It is spread out in 4000 Sq. Kms.
It is the centre of Maoists.
There are training centres, /armament
factories etc.
They changed the tribals into Maoists.
They declared it as a liberated place.
They established their own JanaTana Circar.
689Q. In power transmission
what is the role of 400 Hz?
Frequencies
as high as 400 Hz are used in
1. Aircraft,
2. Spacecraft,
3. Submarines,
4. Server
rooms for computer power,
5. Military
equipment, and
6. Hand-held
machine tools.
Such high frequencies cannot be
economically transmitted long distances, so 400 Hz power systems are
usually confined to a building or vehicle.
Transformers and motors for 400 Hz
are much smaller and lighter than at 50 or 60 Hz, which is an advantage in
aircraft and ships.
A United States military standard MIL-STD-704
exists for aircraft use of 400 Hz power.
690Q. What are the Frequencies
in Use in 1946 (As well as 50 Hz and 60 Hz)Frequencies in Use in 1946 (As well as 50 Hz and 60 Hz)
|
Cycles
|
Region
|
|
25
|
Canada
(Southern Ontario), Panama Canal Zone(*), France, Germany, Sweden, UK,
China,
Hawaii,India, Manchuria,
|
|
40
|
Jamaica, Belgium, Switzerland, UK, Federated Malay
States, Egypt, West Australia(*)
|
|
42
|
Czechoslovakia, Hungary, Italy, Monaco(*), Portugal,
Romania, Yugoslavia, Libya (Tripoli)
|
|
43
|
Argentina
|
|
45
|
Italy, Libya (Tripoli)
|
|
76
|
Gibraltar(*)
|
|
100
|
Malta(*), British East Africa
|
691Q. What are the
characteristics of micro, mini and super computer?
A microcomputer is a computer with a
microprocessor as its central processing unit. A microcomputer is a computer
with a microprocessor as its central processing unit. Another general characteristic
of these computers is that they occupy physically small amounts of space when
usually referred to by its manufacturers as a "large server"
Another general characteristic
of these computers is that they occupy physically small amounts of space when
parlance, workstations Sun Microsystems and general UNIX/Linux parlance, and
servers.
A supercomputer is a computer
that is considered at the time of its introduction to be at the frontline in
terms direction to provide
1.
Network planning,
2.
Design,
3.
Modification,
4.
Implementation,
5.
Security and
6.
Administration.
Distinguishing Characteristics: Microcomputer/Network
Specialist II represents the advanced the end application use. The
minicomputers considered here are machines available currently and developed in
the last two to three years.
Super Computer: The largest computers are supercomputers.
Supercomputer, formerly almost a synonym for "Cray supercomputer"
but now meaning a very large server and sometimes.
supercomputers are all able to
perform the same computational tasks given enough time and storage capacity.
A programmable machine.
692Q. What is a computer ?
Therefore,
computers with capability and complexity ranging from that of a personal
digital assistant to a supercomputer are all able to perform the same
computational tasks given enough time and storage capacity for more in check
http://en.wikipedia.org/wiki/C omput er....well,
what is computer?
A programmable machine. The two
principal characteristics of a computer are:
1. It
responds to a specific set of instructions in a well-defined manner. It can
execute a prerecorded list supercomputer are all able to perform the
same computational tasks given enough time and storage capacity for more
2. Computer
is an electronic device which wristwatch should be able to accomplish anything
a supercomputer can although it might take thousands of years for the
wristwatch to complete the operation. At one time, computers were extremely
large on how the data is to be processed.
3. The
two principal characteristics of a computer are: It responds to a
specific set of instructions in a well-defined manner. It can execute a
prerecorded list
693Q. What is the new sign of
black-hole birth? [The Hindu 9-5-13 Thu]
Black
holes are exotic space phenomena whose gravitation pulls are so strong that not
even light can escape.
They
are formed when heavy stars exhaust all their hydrogen and collapse under their
own weight.
No
body has witnessed the birth of a black hole because nobody is sure what kinds
of massive stars produce black holes.
When
a massive star’s core collapses, its protons and electrons merge to form neutrons.
As the collapse intensifies, an extremely dense core called a neutron star is
formed.
The
dying star may generate a distinct burst of light that could allow astronomers
to witness the birth of a black hole for the first time.
Particles
called neutrinos are also formed simultaneously. They zip through matter at
close to the speed of light, taking away a lot of the mass in the core making
its gravitational pull drastically weak.
694Q. What is Length
contraction?
In
physics, length
contraction is the physical phenomenon of a decrease in length detected by an
observer of objects that travel at any non-zero velocity relative to that observer.
This
contraction which is called Lorentz contraction is usually only
noticeable at a substantial fraction of the speed of light;
The
contraction is only in the direction parallel to the direction in which the
observed body is travelling.
This
effect is negligible at everyday speeds, and can be ignored for all regular
purposes.
Only
at greater speeds does it become important.
At
a speed of 13,400,000 m/s (30 million mph, 0.0447c), the length is 99.9%
of the length at rest;
At
a speed of 42,300,000 m/s (95 million mph, 0.141c), the length is still
99%.
As
the magnitude of the velocity approaches the speed of light, the effect becomes
dominant.
695Q. What is disruptive
technologies?
disruptions occurring from coincidental
inventions, changes in regulations and society, exploding demand for new
products as well as growth in complementary technologies created through
strange connections. With that broader context, it is possible to further define disruptive technologies and products as follows.
·They create new markets and customer segments that previously did not
exist or were thought unattainable;
·They initially target underserved customers;
·They are perceived as inferior by existing mainstream customers;
·They attract early adopters and create loyal followers as they offer
new performance vectors previously unmet;
·They reduce complexity and are simpler in design and easier to use;
·They specifically target breakthrough improvement in a new performance
vector;
·They can require a new business model or distribution method;
696Q. What is geostationary
orbit?
A
geostationary orbit, or Geostationary Earth Orbit (GEO),
is a circular orbit
35,786 kilometres (22,236 mi) above the Earth's equator and
following the direction of the Earth's rotation. Communications satellites and weather satellites are often given geostationary orbits, so that the satellite antennas that communicate with them do not have to move to track them, but can be pointed permanently at the position in the sky where they stay.
A geostationary orbit is a particular type of geosynchronous orbit.
697Q. How is Orbit allocation done?
Satellites in geostationary orbit must all occupy a single ring above the Equator. The requirement to space these satellites apart to avoid harmful radio-frequency interference during operations means that there are a limited number of orbital "slots" available, thus only a limited number of satellites can be operated in geostationary orbit. This has led to conflict between different countries wishing access to the same orbital slots (countries near the same longitude but differing latitudes) and radio frequencies. These disputes are addressed through the International Telecommunication Union's allocation mechanism. In the 1976 Bogotá Declaration, eight countries located on the Earth's equator claimed sovereignty over the geostationary orbits above their territory, but the claims gained no international recognition.
698Q. Does sound always travel at the same speed, why or why not?
This is related to the question on how sound travels. Reading the answer to that question should help answer this. The simple answer is no. This basically has to do with how close the atoms are to transmit the "message". If they are closer (e.g. a solid), the sound travels faster than in a gas where they are separated by quite a distance.
699Q. How come some things are sound-proof, but some things aren't?
Sound proofing is putting something in walls to absorb the sound. In a large open room, the problem is in directing the sound so as to not create echoes. Often sound absorbers help, and sound reflectors help.
It is easier and cheaper to build an auditorium without paying an expensive sound engineer for this information and paying for extra materials to be installed. However, when you build something like Davis symphony hall in the city or the new Children's Theatre, you must pay this extra because people are coming to hear the instruments and acting voices without echoes, and with clarity. In a school auditorium, you are usually interested in just hearing someone talk, and this usually doesn't require such fancy sound-proofing.
700Q What are the various
types of wastes?
There are many waste types defined by modern systems of waste
management, notably including:- Municipal Waste includes Household waste, Commercial waste, and Demolition waste
- Hazardous Waste includes Industrial waste
- Bio-medical Waste includes Clinical waste
- Special Hazardous waste includes Radioactive waste, explosives waste, and Electronic waste (e-waste)
