CAMPUS NEWS LETTER
PROBE
P RINCE S HRI V ENKATESHWARA
P ADMAVATHY E NGINEERING
C OLLEGE
Chairman
Dr. K. Vasudevan
Vice-Chairman
Dr. V. Vishnu Karthik
Administrative Officer
Er.K. Parthasarathy
Principal
Dr.T. Sounderrajan
Editor-in-Chief
S. Essaki Sri Ram
News-Editor
S. Aravinth
Staff-Writer
K. Anushkumar
P. Avinash
C.K. Gokulnath
R. Harish
N. Ravi Prasath
A. Santhosh
M. Shanmugaraj
C. Yoganand
The college emerged as a visionary
and is now entitled to honor by the service of
knowledge. The eager young minds have brought
colors to the well known world today from this
very institution. This college started as a prince in
its esteemed goal and now is the king of the same,
yet modestly holding its prior name. The institution
has achieved a precious position among the top 10
colleges under Anna University.
” In pioneer days they used oxen for
heavy pulling and when one ox
couldn’t budge a log, they didn’t try to
grow a larger ox. We shouldn't be
trying for bigger inventions, but for
more system of discoveries. ”
Where it all Began !!
Built from the top
The Egyptian pyramids are
ancient pyramid-shaped masonry
structures located in Egypt.
There are 138 pyramids discovered
in Egypt as of 2008. Most were
built as tombs for the country's
Pharaohs and their consorts during
the Old and Middle Kingdom periods.
The earliest known Egyptian pyramids are found at Saqqara, northwest of Memphis. The earliest among these is the Pyramid of Djoser
(constructed 2630 BCE–2611 BCE) which was built during the third
dynasty. This pyramid and its surrounding complex were designed by
the architect Imhotep, and are generally considered to be the world's
oldest monumental structures constructed of dressed masonry. The
estimated number of workers range from a 1000 to 100,000.
The most famous Egyptian pyramids are those found at Giza, on the
outskirts of Cairo. Several of the Giza pyramids are counted among
the largest structures ever built. The Pyramid of Khufu at Giza is the
largest Egyptian pyramid. It is the only one of the Seven Wonders of
the Ancient World still in existence.
There have been many hypotheses about the Egyptian pyramid construction techniques. These techniques seem to have developed over
time; later pyramids were not built the same way as earlier ones. Most
of the construction hypotheses are based on the idea that huge stones
were carved with copper chisels from stone quarries, and these blocks
were then dragged and lifted into position. Disagreements chiefly
concern the methods used to move and place the stones. There is also
another hypothesis that they were built out of geopolymer cement,
otherwise known as cast stone.
In addition to the many unresolved arguments about the construction
techniques, there have been disagreements as to the kind of workforce
used. The Greeks, many years after the event, believed that the pyramids must have been built by slave labor. Archaeologists now believe
that the Great Pyramid of Giza (at least) was built by tens of thousands of skilled workers who camped near the pyramids and worked
for a salary or as a form of tax payment (levy) until the construction
was completed; pointing to worker's cemeteries discovered in 1990 by
archaeologists Zahi Hawass and Mark Lehner. For the Middle Kingdom Pyramid of Amenemhat II, there is evidence from the annal
stone of the king that foreigners from Palestine were used.
Geared up Revolution
Applications of mechanical engineering are found
in the records of many ancient
and medieval societies throughout the globe. In ancient
Greece, the works of Archimedes (287 BC–212 BC)
deeply influenced mechanics in
the Western tradition and Heron
of Alexandria (c. 10–70 AD)
created the first steam engine. In China, Zhang Heng (78–139 AD) improved a
water clock and invented a seismometer, and Ma Jun (200–265 AD) invented
a chariot with differential gears. The medieval Chinese horologist and engineer Su Song (1020–1101 AD) incorporated an escapement mechanism into
his astronomical clock tower two centuries before any escapement can be
found in clocks of medieval Europe, as well as the world's first known endless
power-transmitting chain drive.
During the years from 7th to 15th century, the era called the Islamic Golden
Age; there were remarkable contributions from Muslim inventors in the field
of mechanical technology. Al-Jazari, who was one of them, wrote his famous
Book of Knowledge of Ingenious Mechanical Devices in 1206, and presented
many mechanical designs. He is also considered to be the inventor of such mechanical devices which now form the very basic of mechanisms, such as the
crankshaft and camshaft.
During the early 19th century in England, Germany and Scotland, the development of machine tools led mechanical engineering to develop as a separate
field within engineering, providing manufacturing machines and the engines
to power them. The first British professional society of mechanical engineers
was formed in 1847 Institution of Mechanical Engineers; thirty years after the
civil engineers formed the first such professional society Institution of Civil
Engineers. On the European continent, Johann Von Zimmermann (1820–
1901) founded the first factory for grinding machines in Chemnitz, Germany
in 1848.
In the United States, the American Society of Mechanical Engineers (ASME)
was formed in 1880, becoming the third such professional engineering society,
after the American Society of Civil Engineers (1852) and the American Institute of Mining Engineers (1871). The first schools in the United States to offer
an engineering education were the United States Military Academy in 1817,
an institution now known as Norwich University in 1819, and Rensselaer
Polytechnic Institute in 1825. Education in mechanical engineering has historically been based on a strong foundation in mathematics and science.
Shocked the World
The History of Electricity is fascinating. Despite what you have learned, Benjamin Franklin did not "invent"
electricity. In fact, the History of Electric Energy did not begin when Benjamin Franklin at when he flew his kite during a thunderstorm or when light bulbs were installed in houses all around the world.
So, what is electricity? The truth is that electricity, like natural resources, has always been around because it naturally exists in
the world. Lightning, for instance, is simply a flow of electrons between the ground and the clouds in the form of static electricity. When you touch something and get a shock that is really static electricity moving toward you. In the rich History of Electricity, the first discoveries were made back in ancient Greece. Greek philosophers discovered that when amber is rubbed against
cloth, lightweight objects will stick to it. This is the basis of static shock.
Imagine a world without electricity. No computers. No televisions. None of the modern "conveniences" we take for granted.
In the late 19th Century electricity was a new marvel. People had known about electricity for many years. Benjamin Franklin first achieved world renown for his experiments with electricity, including work with his famous kite and key. Until just over a century ago there was no
way for electricity to be harnessed for practical use. It was in the late 1870s when America's greatest inventor -Thomas Alva Edison -- developed and built the first electricity generating plant in New York City.
Soon numerous electric companies were competing to supply power in the nation's major cities. The focus was on business customers, although some wealthy homeowners had electric lighting installed. Because generation capacity was so
limited most homes could only have three or four electric lights. And homeowners often had to turn off one light before
they could turn on another.
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Episode1
By 1920 all of the nation's major cities had competing electric companies,
each with its own sets of poles and
wires. In order to bring service to more
people, states began adopting laws providing for a single electric company in each
city. From these laws grew the "regulatory compact" which formed
the foundation of the electric utility industry in the U.S. for nearly
eight decades.
Efforts to understand capture, and tame electricity began in the 18th
century. For the next 150 years, dozens of "natural scientists" in
England, Europe, colonial America, and later the United States analyzed electricity in nature, but producing it outside of nature was
another matter. That didn't happen on any large scale until the late
19th century. Setting the stage for widespread commercial use of
electricity were international researchers engaged in pure scientific
research, and entrepreneurial businessmen who made their own major discoveries or produced, marketed, and sold products based on
others' ideas.
Virtual Communication
Electronics engineering is a discipline where nonlinear and active electrical components such as electron tubes,
and
semiconductor
devices,
especially transistors, diodes and integrated circuits, are utilized to design electronic circuits, devices and systems, typically also including passive electrical components and based on printed circuit
boards. The term denotes a broad engineering field that covers important subfields such as analog electronics, digital electronics, consumer electronics, embedded systems and power electronics.
Electronics engineering deals with implementation of applications,
principles and algorithms developed within many related fields, for
example radio engineering, telecommunications, control systems, signal processing, systems engineering, robotics, and many
others. The Institute of Electrical and Electronics Engineers (IEEE)
is one of the most important and influential organizations for electronics engineers.
Digital Reality
Information has fascinated us over the past
century and technology has been doing the same in
leaps and bounds. The marriage of these aspects
has changed the way we perceive today’s world.
The surface of the earth is carved on digital
grounds and it needs constant development for it to
adapt to the rising needs of the people who nowadays require everything to be done from the comfort of their home sweet home.
Now how does that relate to the revolution…? The answer to that lies in the
above statement itself. The people want change and they give a warm welcome
to the change. That is when the first child of an extraordinary marriage is born –
IT revolution.
Technology is not only the complex computers and mobile phones you use today; it is right from the stone ages where man communicated using pigeons.
Trunk calls and telegrams, though they are a relic of a time gone by, were once
the undisputed champions of connectivity. Later people went drooling over
Nokia 1100 which had a cheap processor and a few yet sturdy buttons and that
was a “rev up” according to the experts.
Apple, Sony, Samsung, Nokia and many other (actually few, just being diplomatic), companies are changing our lifestyle, either we want it or not. Just think
a moment; can you survive without your phone or computer? Please don’t try to
fool yourself by saying NO. On the
bright side of things, communication has become much easier due to
the venture of million dollar companies who invest in the needs of people. WHATSAPP, VIBER and
FACEBOOK are doing a greater job
in connecting people than any sport
or national movement does. YOUTUBE is getting more popular than your normal television or even theatres. TWITTER spreads news all over the globe faster
than a fire would climb up a forest. GMAIL sends and receives confidential information in a day more than a newspaper is sold in 100 cities.
Dubai’s Rotating Tower Plan Given New Life:
Dynamic Tower will be a rotating skyscraper measuring 80 stories high and rotating a full 360 degrees every 90 minutes.
`Architect: David Fisher.
The Da Vinci Tower is a proposed 313 m (1,027 ft), 68-floor tower in Dubai. The tower is expected
to be architecturally innovative. Uniquely, each floor will be able to rotate independently. This will result in a
constantly changing shape for the tower. Each floor will rotate a maximum of one full rotation in 90 minutes. The entire tower will be powered by wind turbines and solar panels, that will also provide electricity to five other buildings in the vicinity. The turbines will be located between each of the rotating
floors and could generate up to 1,200,000 KWH of Energy.
It will also be the world's first prefabricated skyscraper. 90% of the tower will be built in a factory and
shipped to the construction site. This will allow the entire building to be built in only 18 months. The only
part of the tower that will be built at the construction site will be the core. Part of this prefabrication will be
the decrease in cost and number of workers. The total cost will be 23% less than a normal skyscraper of the
same size, while only 90 people will work on the construction site. The majority of the workers will be in
factories, where it will be much safer.
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Episode1
Eye on Fuel Effeciency:
STUDENTS OF MANAV RACHNA INTERNATIONAL UNIVERSITY HAVE DESIGNED A PROTOTYPE
CAR THAT CAN RUN 123KM/ LITRE
The search to minimize energy requirements has marked many an effort in the twentieth century. One such search has
led to the establishment of the Shell Eco-marathon – a contest for high school and college students to construct the best
ultra-energy-efficient car. They will have to drive as far as possible with an equivalent of one liter of fuel, with cars they
themselves have designed and built. This started as a friendly wager between shell oil company employees, in 1939, over
who could drive the farthest using a liter of fuel. The winner of that contest covered 21km per liter. Today, according to information given on the competition website, some achieve distances equivalent to driving from Paris to Germany!
What is news for us is that the students of Manav Rachna International University have been engaged in designing and building a similar fuelefficient car and will be participating in Shell Eco-marathon Asis, challenge, in February.
Himanshu Malik, a member of the team that worked on this project says, “It took us three months to fabricate this car. There are electric vehicles also, but we are participating in the diesel category.” The team comprising about 20 members was drawn from the second, third and final years of
automobile engineering department. The O.P. Bhalla Innovation and Incubation Centre of the university made available its workshop for the students,
day and night. “We used to stay on in the nights and work, having attended classes in the daytime,” adds Himanshu.
This year the contest will be held in Manila, in the Philippines, and the Manav Rachna team plans to run the MRV3 which can run a distance
of 123 km per liter. It weighs 180Kg and the body is made of glass fiber- 21Kg in weight. It has a turning radius of four meters. Karamvir and Aman
Agha, the manager of the team, have come up with the idea of putting in an alcohol sensor. The car will not start unless the driver takes a breathanalyzer test. Another feature of this car is that the engine is separated from the driver seat by fire-resistant material and also the steering mechanism
is thus separated from the driver’s compartment.
Computing with silicon neurons
Foam Concrete / Light Weight Concrete Block
Foam concrete is a cement bonded material made by blending an extremely fluid cement paste (slurry), into which is injected stable, preScientists in Germany are using artificial nerve cells to classify different types formed foam, manufactured on site.
of data. These silicon 'neurons' could recognize handwritten numbers, or di
stinguish plant species based on their flowersScientists from Berlin and Hei- Fresh foam concrete has the appearance of a light-grey mousse or
delberg are using artificial nerve cells to classify different types of data. These milk-shake and it is the volume of slurry to foam which dictates the
silicon 'neurons' could recognize handwritten numbers, or distinguish plant cast density of the foam concrete.
Source: Freie University Berlin
species based on their flowers.
The foam is produced using either protein-based foaming agent, or
synthetic additive, both of which are extensively manufactured in the
A bakery assistant who takes the bread from the shelf just to give it to his boss UK.
who then hands it over to the customer? Not the most efficient way of doing
things. Instead, both work at the same time to sell the baked goods. Similarly, The physical characteristics of foam concrete are determined by the
computer programs are more efficient if they process data in parallel rather use of one of a number of mix designs: Depending upon the applicathan to calculate them one after the other. However, most programs that are tion for which the concrete is required, these mix designs may include
applied still work in a serial manner.
the use of Portland cement (CEM1), either on it's own, or in combination with a percentage of Pulverized Fly Ash, GGBS, or the inclusion
of limestone dust or sand.
Scientists from Freie University Berlin, the Bernstein Centre Berlin, and Heidelberg University have now refined a new technology that is based on parallel data processing. In the so-called neuromorphic computing, neurons made
of silicon take over the computational work on special computer chips. The
neurons are linked together in a similar fashion to the nerve cells in our brain.
If the assembly is fed with data, all silicon neurons work in parallel to solve
the problem. The precise nature of their connections determines how the network processes the data. Once properly linked, the neuromorphic network operates almost by itself. The researchers have now designed a network-a neuromorphic "program"- for this chip that solves a fundamental computing problem: It can classify data with different features. It is able to recognize handwritten numbers, or may distinguish certain plant species based on flowering
characteristics.
"The design of the network architecture has been inspired by the odourprocessing nervous system of insects," explains Michael Schmuker, lead author of the study. "This system is optimized by nature for a highly parallel
processing of the complex chemical world." Together with work group leader
Martin Nawrot and Thomas Pfeil, Schmuker provided the proof of principle
that a neuromorphic chip can solve such a complex task. A major challenge
will be that not even two neurons are identical -- neither in silicon nor in the
brain.
Page 4
Foam concrete is mainly used in the construction industry. A variety
of strengths and densities of the product can be produced easily and
are available for different uses. A range of density, starting from 400
kg/cum-800 kg/cum(Gap filling and thermal and acoustic resistance),800 kg/cum - 1200 kg/cum for partitions and walls (precast
blocks ), 1200-1600 kg/cum for structural work like prefab and
poured in-situ structures.
With the development in structural design & engineering and acceptability of architectural boldness the Indian market is ready for this industry & Foam concrete is an ideal substitute for normal concrete.
LOLs
How can you tell when you are getting shocked by AC or DC?
With AC, your teeth will chatter
60 times a second, with DC you
just bite down.
Episode1
Nanotube inks set to revolutionize device produc- 3D-PRINTING & ADDITIVE PROCESS
3D printing or Additive manufacturing is a process
tion
of making
a three-dimensional solid object of virtually any shape from a digital model. 3D
printing is achieved using an additive process
where successive layers of material are laid down in
different shapes.3D printing is also considered distinct from
traditional machining techniques,
which mostly rely on the removal of material by
methods such as cutting or drilling (subtractive
processes).
Electronics materials innovator
Brewer Science has announced a
range of inks that it says will change
the
way carbon nanotubes (CNT) can be used
to manufacture microelectronic devices. The CNTRENE 4010
series of water based semiconducting inks is stable and can be
deposited onto a variety of rigid and flexible substrates using
standard coating
techA 3D printer is a limited type of industrial robot
niques.
that is capable of carrying out an additive process HaveBlue.org created a 3d
under computer control. While 3D printing technol- printed pistol and fired 200
ogy has been around since the 1980s, it was not un- gunshots
til the early 2010s that the printers.
Solar cell manufacturing process could have
wider application
A research team at the University of California, Los Angeles
has created a process for manufacturing highly efficient photovoltaic materials and
says the approach
shows promise for low
cost industrial production of solar cells. Solar cells have been
produced with a power
conversion rate of
more than 12% – said
to be comparable to or
better than' that of
amorphous silicon solar cells. While the test cells were postage
stamp sized, the process is believed to be scalable.
But, in modern society, 3D printers have been used to create firearms, creating fear
that gang warfare and firearms will become prevalent . The first working 3D printer
was created in 1984 by Chuck Hull of 3D Systems Corp. Since the start of the 21st
century there has been a large growth in the sales of these machines, and their price
has dropped substantially. The 3D printing technology is used for
both prototyping and distributed manufacturing with applications in architecture,
construction (AEC), industrial design, automotive, aerospace, military, engineering,
civil engineering, dental and medical industries, biotech (human tissue replacement), fashion, footwear, jewelry, eyewear, education, geographic information systems, food, and many other fields.
A large number of additive processes are now available. They differ in the way layers are deposited to create parts and in the materials that can be used. Some methods
melt or soften material to produce the layers, e.g. selective laser melting(SLM)
or direct metal laser sintering (DMLS), selective laser sintering(SLS), fused deposition modeling (FDM), while others cure liquid materials using different sophisticated technologies, e.g. stereolithography(SLA). With laminated object manufacturing (LOM), thin layers are cut to shape and joined together (e.g. paper, polymer,
metal.
DIAMETERS:
Rubber Sheets that Generate Electricity to
Power Cell Phones
The latest invention of engineers at Princeton University represents special rubber
films that are able to produce electricity. Using these films it would be possible to power different portable devices such as players and cell
phones by simply making body
movements like walking or breathing.
The latest invention features ceramic
nano ribbons fixed onto silicon rubber sheets. Energy is produced when
the new material is flexed. It can easily convert mechanical energyinto
electrical one. For example, these
rubber sheets can be fixed on shoes, thus the wearer of such
shoes will be able to power gadgets while walking or running.
If placed against the lungs, the sheets take advantage of
breathing motions to generate energy.
It is worth mentioning that scientists from Princeton University are the first who managed to successfully mix silicone and
nanoribbons of lead zirconatetitanate (PZT). The latter is a
ceramic material able to produce energy whenever pressure is
applied to it. The PZT is considered to be the most efficient
among all known piezoelectric
Page 5
To perform a print, the machine reads the design
from an STL File and lays down successive layers of
liquid, powder, paper or sheet material to build the
model from a series of cross sections. The primary
advantage of this technique is its ability to create
almost any shape or geometric feature.
An ORDbot Quantum 3D printer.
Printer resolution describes layer thickness and X-Y
resolution in dpi (dots per inch) or micrometers.
Typical layer thickness is around 100 µm (250 dpi), although some machines such
as the Object Connex series and 3D Systems ProJet series can print layers as thin as
16 µm (1,600 DPI).
Construction of a model with contemporary methods can take anywhere from several hours to several days, depending on the method used and the size and complexity of the model. Additive systems can typically reduce this time to a few hours,.
Traditional techniques like injection moulding can be less expensive for manufacturing polymer products in high quantities, but additive manufacturing can be faster,
more flexible and less expensive when producing relatively higher quantities.
Did you know????
A spark of static electricity can measure up to three thousand (3,000) volts.
A bolt of lightning can measure up to three million (3,000,000) volts and it lasts less than one
second!
A 600 megawatt natural gas plant can power
220,000 homes.
Episode1
Two Indians at Pole Positions
An International icon yet from
a developing country emerges from the inspiring city of
Chennai], once
boarded the train of success and had many
astounding stops on the go. Let’s list out;
Bachelor of Technology at Indian
Institute of Technology, Kharagpur.
Master of Science (or popularly
known as MS) at Stanford University, California.
Master of Business Administration at
Wharton School of the University of
Pennsylvania.
Pretty impressive isn’t it? Wait till you witness this. Pichai Sundararajan, better known as Sundar Pichai is
an Indian businessman. He is a Senior Vice President at Google,
where he is the boss of Android, Chrome and Google Apps. He was
named a Siebel Scholar and a Palmer Scholar at Wharton.
Pichai joined Google in 2004, where he led the product management
and innovation efforts for a suite of Google's client software products, including Google Chrome and Chrome OS, as well as being
largely responsible for Google Drive. He went on to oversee the development of different apps like Gmail and Google Maps. On 19
November 2009, Pichai gave a demonstration of Chrome OS. On 20
May 2010, he announced the open-sourcing of the new video codec VP8 by Google, and introduced the new video format WebM. He
has been a director at Jive Software since April 2011.
On 13 March 2013, Pichai added Android to the Google products he
oversees. Android was formerly managed by Andy Rubin. He was
believed to be one of the contenders for the CEO position of Microsoft in 2014, but was paid around $50mn by Google to stay in
Google Inc.
Before joining Google, Pichai worked at Applied Materials and
McKinsey & Company.
Pichai has more than 15 years of experience developing high-tech
consumer and enterprise products. He serves as a Member of Board
of Advisors at Ruba, Inc. He has been a Director of Jive Software,
since April 2011.
Page 6
February 4, 2014 – a precious day for all Indians. The new CEO
of Microsoft has been chosen from the
diverse nation of India. Yes, an Indian
indeed has been appointed as the new
CEO of a great company. Satya Nadella
earns the throne of Steve Ballmer (former
CEO of MS).
Nadella was born in Hyderabad, Andhra
Pradesh, India, in a Telugu family to an
IAS officer. Satya attended the Hyderabad Public School in Begumpet before
attaining a bachelor of engineering in
electronics and communication degree
from Manipal Institute of Technology.
After moving to the US, Nadella earned
an MS in Computer Science from the University of Wisconsin–
Milwaukee and an MBA from the University Of Chicago Booth
School Of Business.
Nadella played cricket when younger, and cites it as one of his hobbies today. Nadella has said, "I think playing cricket taught me more
about working in teams and leadership that has stayed with me
throughout my career."
“During this time of transformation, there is no better person to
lead Microsoft than Satya Nadella,” said Bill Gates, Microsoft’s
Founder and Member of the Board of Directors. “Satya is a proven
leader with hard-core engineering skills, business vision and the ability to bring people together. His vision for how technology will be
used and experienced around the world is exactly what Microsoft
needs as the company enters its next chapter of expanded product innovation and growth.”
Nadella worked with Sun Microsystems, as a member of its technology staff, prior to joining Microsoft in 1992. He was Executive Vice
President of Microsoft’s Cloud and Enterprise group, responsible for
building and running the company’s computing platforms, developer
tools and cloud services. Since joining the company in 1992, Nadella
has spearheaded major strategy and technical shifts across the company’s portfolio of products and services, most notably the company’s move to the cloud and the development of one of the largest
cloud infrastructures in the world supporting Bing, Xbox, Office and
other services. During his tenure overseeing Microsoft’s Server and
Tools Business, the division outperformed the market and took share
from competitors.
Episode1
PREPARE
1. Twice a number is 12 more than half the number. What is the number?
a) 7
b) 6
c) 8 d) 9
2. The difference between a three-digit number and the number formed by reversing its digits, is always divisible
by?
a) Only 9
b) only 11
c) 101 d) 99
3. The cost of 3 apples, 2 mangoes and 4 oranges is Rs.43.The cost of 5 apples, 3 mangoes and 6 oranges is Rs.66.Find the cost of each apple.
a) Rs.5
b) Rs.6
c) Rs.3
d) cannot be determined.
4. Find the value of k if the equations 3x+4y=24 and 15x+20y=8k are consistent.
a) 5 b) 120 c) 30 d) 15
5. A train running at the speed of 60km/hr crosses a pole in 9 seconds. What is the length of the train?
a) 120m
b) 180m
c) 324m
d) 150m
6.The ratio of earnings to expenditure of A is 5:3 and that of B is 7:6.If the savings of A is double the that of B, then what could be the ratio of total
earnings of A and B together to the total expenditure of A and B together?
a) 4:3 b) 3:5 c) 5:3 d) 17:12
7. The salaries of two persons are equal. If the salary of one person is increased by 10% and that of the other is decreased by 10%, then what is the
change in the total salary of the two persons?
a) It increases by 1% b) it decreases by 1% c) no change d) none of these.
8. The price of the product is reduced to Rs.72 after it is decreased by 10%.What is the original price of the product? (In Rs.)
a) 84 b) 90 c) 96 d) 80
9. The price of groundnuts increased by x% per week over two successive weeks. If at the beginning, two kilograms were available for Rs.80 and after two weeks they were available for theRs.105.80, what is the value of x?
a) 1.5 b) 115 c) 15 d) 11.5
10. The mean proportional between two numbers is 12.The third proportional of the same number is 96.Find the greater of two numbers.
a) 18 b) 24 c) 12 d) none of these.
11. If p+q/r=q+r/p=p+r/q=k, then find k.
a) 1 b)-1 c) 2 d) either (2) or (3)
12. In UG and PG College with a total strength of 1000, 26% of the students are girls. There are 520 PG’s and 38 more UG’s than female UG’s. What
percent of the males are UG’s?
a) 45%
b) 65% c) 26% d) 35%
13. If 10% of a is b% of 200, a/b=?
a) 20
b) 1/20
c) 10
d) 1/10
14. Which of the following is a number divisible by 11?
a) 11111
b) 5555555 c) 123321
d) 1234567
15. For a rectangular prism of height 6cm, the length and the breadth of the base are 5cm and 4cm respectively. Find the lateral surface area.
a) 108 sq.cm b) 46sq.cm
c) 54sq.cm
d) 96sq.cm
16. For a circle of radius=5cm, what is the length of the chord which is at a distance of 3cm from the center?
a) 4cm
b) 6cm
c) 7cm
d) 8cm
17. At 3:30 p.m., what is the angle between the hour hand and the minute hand of a clock?
a) 75 deg
b) 90 deg
c) 105 deg
d) 60 deg
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Episode1
18.A beats B by 10 meters in a 100 meters race. B beats C by 20 meters in the same race, and then A beats C by how
many metres in that race?
a)32
b) 30
c) 28
d) 26
19. The ratio of speeds of A and B is 3:2.B started running from P towards east at 8:00 a.m. After 1 hour, A started
running from P in the same direction. When will A meet B?
a) 10:00 am b) 11:00 am c) 12:00 noon d) cannot be determined.
20. A train crosses two platforms of lengths 250m and 10m in 50 seconds and 40 seconds respectively. Find the speed of the train.
a) 50km/hr
b) 39.6km/hr c) 8.02km/hr d) 22.4km/hr
21. A, B and C jointly thought of engaging themselves in a business venture. It was agreed that A would invest Rs. 6500 for 6 months, B, Rs. 8400 for
5 months and C, Rs. 10,000 for 3 months. A wants to be the working member for which, he was to receive 5% of the profits. The profit earned was
Rs. 7400. Calculate the share of B in the profit.
a) Rs.1900
b) Rs.2660
c) Rs.2800
d) Rs.2840
22. It was Sunday on Jan 1, 2006. What was the day of the week Jan 1, 2010?
a) Sunday
b) Saturday c) Friday
d) Thursday
23. The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?
a) 4 years
b) 8 Years
c) 10 years
d) none.
24. A father said to his son, "I was as old as you are at the present at the time of your birth". If the father's age is 38 years now, the son's age five years
back was:
a) 14 years b) 19 years
c) 33 years
d) 38 years
25. The least perfect square, which is divisible by each of 21, 36 and 66 is:
a) 213444
b) 214344
c) 214434
d) 231444
26.A man leaves P and reaches Q in 3 hrs at an average speed of 60 kmph.what is the distance from P to Q?
a)240km
b)150km
c)300km
d)180km
27.If P,Q and R earned Rs.295 working together on a job which each can do in 5,6,8 days respectively.what is the share of R?
a)Rs.100
b)Rs.120
c)Rs.150
d)Rs.75
28.Machine A can do a work in 20 days.An advanced machine B is 25% more effecient than A.In how many days can they complete work,if they
work together?
a)64/9days
b)42/9days
c)8/9days
d)32/9days
29.What is the average of the numbers 31,34,37,40,43,46,49,52?
a)41.5 b)42.5 c)43.5 d)44.5
30.By diluting 20 lts of milk and selling it at its cost price,a milk man makes 25% profit.Find the quantity of water added.
a)5lts b)2lts c)3lts d)4lts
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Episode 1