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Rajendra 10/05/2016 in  GATE Coaching classes

What are the conditions of equilibrium of rigid bodies?

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Vikas replied | 10/05/2016

Vector sum of all the forces and moment is equal to zero

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Bivash 10/05/2016 in  GATE Coaching classes

Can you state the laws of dry friction?

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Lokesh replied | 07/07/2016

there are three laws of dry friction
1st law: friction is directly proportional to load applied
2nd law: friction is independent of apparent area of contact
3rd law: friction is independent of sliding velocity

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Phoenix Edu Solutions replied | 07/07/2016

when two bodies are in contact, the force required to produce sliding is proportional to the normal force acting in the plane of contact.
F= uN

where F = Force applied against Friction
u= coefficient of friction
N= Reaction Force

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Ankita 10/05/2016 in  GATE Coaching classes

Please explain the types of polymerization with example?

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Success Ease replied | 05/07/2016

The chemical reaction in which high molecular mass are formed from monomers is known as polymerisation.
Types :

There are two types of polymerization.
Addition polymerization.
Condensation polymerization

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Success Ease replied | 05/07/2016

The chemical reaction in which high molecular mass are formed from monomers is known as polymerisation.
Types :

There are two types of polymerization:-
1.Addition polymerization:
When a number of monomers undergo self-combination, resulting substance has a molecular mass many times larger than the monomer, the type of polymerization is known as Addition...  more»
The chemical reaction in which high molecular mass are formed from monomers is known as polymerisation.
Types :

There are two types of polymerization:-
1.Addition polymerization:
When a number of monomers undergo self-combination, resulting substance has a molecular mass many times larger than the monomer, the type of polymerization is known as “ Addition polymerization”.
The empirical formula of addition polymer and the monomer is same.
These reactions are catalyzed by peroxides or acids.
Generally these reactions required a pressure of 100 atmosphere at 200oC.
Examples: polyethylene, polypropylene, P.V.C(Poly Vinyl Chloride), teflone

2.Condensation polymerization:
Condensation polymers are formed by the combination of monomers with the elimination of simple molecules such as H2O or CH3OH.
There are two types of Condensation polymers:
1. Polyester.
2. Polyamide.
Examples: Nylon, terylene, Bakelite. «less

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Kiran 09/05/2016 in  GATE Coaching classes

What is ranging?

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Sarbjeet replied | 09/05/2016

The process of establishing or developing intermediate points between two terminal points or end points on a straight line is known as ranging.

Ranging is of two types
Direct Ranging
The ranging in which intermediate ranging rods are placed in a straight line by direct observation from either end.

Direct ranging is possible only when the end stations...  more»
The process of establishing or developing intermediate points between two terminal points or end points on a straight line is known as ranging.

Ranging is of two types
Direct Ranging
The ranging in which intermediate ranging rods are placed in a straight line by direct observation from either end.

Direct ranging is possible only when the end stations are inter visible.

Indirect Ranging
The ranging in which intermediate points are interpolated by reciprocal ranging or running an auxiliary line.

Indirect ranging is done where end points are not visible and the ground is high . «less

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Am 09/05/2016 in  GATE Coaching classes

What are the difference between spontaneous & stimulated emissions?

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Sarbjeet replied | 09/05/2016

Spontaneous emission: electron drops from an excited state to a lower state (no outside mechanism) - emitting a photon. Stimulated emission (lasers): photon of the same frequency interacts with electron in excited state which drops to lower state - the emitted photon is coherent with the incoming photon .

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Ramya 09/05/2016 in  GATE Coaching classes

Why Nano composite is different from ordinary composite?

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Phoenix Edu Solutions replied | 07/07/2016

Nanocomposites typically contain 2-10% loadings on a weight basis, yet these composites yield property improvements that are equal to or better than traditional polymer composites containing 20-30% mineral or glass.

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Momin 09/05/2016 in  GATE Coaching classes

What is Rayleigh Scattering?

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Sai Anirudh replied | 03/07/2016

It is the scattering of light by particles in a medium, without change in wavelength. It accounts, for example, for the blue color of the sky, since blue light is scattered slightly more efficiently than red.

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K 09/05/2016 in  GATE Coaching classes

What are Ultrasonic Waves?

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Phoenix Edu Solutions replied | 02/07/2016

Ultrasonic waves are sound waves transmitted above the human-detectable frequency range, usually above 20,000 Hz. They are used by some animals and in medical or industrial technological devices

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Pritom 08/05/2016 in  GATE Coaching classes

What are Bogues compounds?

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Vikas replied | 10/05/2016

C3S,C2S,C3A and C4AF are the components which are used to manufacturing of cement these are c/d bogue compounds

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Sheekha 08/05/2016 in  GATE Coaching classes

What do you understand by “Grade of concrete”

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Vikas replied | 10/05/2016

The grade of concrete means in which ratio we'll mix the cement,sand and aggregate to form a concrete/mixture eg:M-20 where M=mix

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Yusufali 08/05/2016 in  GATE Coaching classes

What is the scope of Geotechnical Engineering?

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Sujish 08/05/2016 in  GATE Coaching classes

What is the scope of Structural Engineering?

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Riishu 08/05/2016 in  GATE Coaching classes

What is the role of Civil Engineers in the infrastructure development of a country?

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Rajaram 07/05/2016 in  GATE Coaching classes

Can you please derive the expression for the RMS value of a sinusoidal voltage?

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Kapil Verma replied | 05/07/2016

Its simple... First square the fuction.. Then integrate it for 1 time period and the divide it by 1 time period and take square root of it.

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Elina replied | 11/07/2016

Refer any standard book of electrical engg. Its simple. First take Square of Asin(wt) . Then take its mean by integrating it over the interval 0 to pi, then take square root.

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Darshan 07/05/2016 in  GATE Coaching classes

Compare Petrol and Diesel engines?

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Neetu replied | 12/07/2016

Diesel Engines:
Diesels are better off for long journeys and pulling heavier loads. Diesels have higher efficiency over petrol engines, and also cost more than their respective petrol variants. Diesels require more maintenance than petrol engines. Diesel engines have to be used more often than petrol engines to keep them in good condition. Lower power delivery at higher rpms(generally),...  more»
Diesel Engines:
Diesels are better off for long journeys and pulling heavier loads. Diesels have higher efficiency over petrol engines, and also cost more than their respective petrol variants. Diesels require more maintenance than petrol engines. Diesel engines have to be used more often than petrol engines to keep them in good condition. Lower power delivery at higher rpms(generally), though higher torques compared to respective petrol variants. More refined power output than petrol engines. More emissions.

Petrol Engines:
Lower costs, lower fuel efficiency, lower maintenance costs, and cheaper as compared to diesel engines. Lesser refined power, higher torques at higher rpms(generally), lower load carrying capacity. Lower flat torque, requires more frequent gear changing. Lower emissions. no need to be used frequently or mare often to keep the engine in good condition. «less

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Vikash 07/05/2016 in  GATE Coaching classes

What are the differences between Renewable & Non Renewable energy resources?

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Gangadhar replied | 07/05/2016

Examples of Non renewable energy sources : Petroleum , Coal... Etc. Once we consume , their reserves on earth reduces

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Vg.manikandan 07/05/2016 in  GATE Coaching classes

What is Wet Steam?

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Karthik replied | 06/07/2016

it is combination of liquid and vapour

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K

Krishnat 07/05/2016 in  GATE Coaching classes

Can anyone explain Fourier law of heat conduction?

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Karthik replied | 05/07/2016

q=-kA(dt/dx) q=heat conduction;k=thermal conductivity;dt=chancgein temperature;dx=change in length.-ve sign indicate decrease in temperature.

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Neetu replied | 06/07/2016

Fourier's law is an empirical law based on observation. It states that the rate of heat flow, dQ/dt, through a homogeneous solid is directly proportional to the area, A, of the section at right angles to the direction of heat flow, and to the temperature difference along the path of heat flow, dT/dx

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Palak 06/05/2016 in  GATE Coaching classes

How can I seek admission for BTech in any of the NITs?

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Harishkumar replied | 08/07/2016

if you are good at mathematics and having good analyticl ability you get in to any of NITs with perseverance and diligence.

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Nithin K replied | 10/07/2016

By scoring good marks in jee examination you can enter into one of the NITs or IITs.You should have a solid concept in PCM

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Tania 06/05/2016 in  GATE Coaching classes

What is the difference between GATE and GMAT?

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Jyoti replied | 06/05/2016

The Graduate Record Examination (GRE) is a standardized test that is an admissions requirement for most graduate schools in the United States. The Graduate Management Admission Test (GMAT) is a computer adaptive test (CAT) intended to assess certain analytical, writing, quantitative, verbal, and reading skills in written English for use in admission to a graduate management program,...  more»
The Graduate Record Examination (GRE) is a standardized test that is an admissions requirement for most graduate schools in the United States. The Graduate Management Admission Test (GMAT) is a computer adaptive test (CAT) intended to assess certain analytical, writing, quantitative, verbal, and reading skills in written English for use in admission to a graduate management program, such as an MBA. «less

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Nasar 06/05/2016 in  GATE Coaching classes

Is there any difference in the GATE and GRE?

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Jyoti replied | 06/05/2016

GATE exam helps in getting admission in M.Tech (master of Technology degree) in Indian universities. and if we want to do take a master degree abroad, go for GRE. GRE need extra effort as English.

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Sarath Chandra 06/05/2016 in  GATE Coaching classes

Is there any similarity between IIT and NIT GATE syllabus?

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Surya replied | 06/05/2016

GATE is all india exam which is same for Post Graduation in engineering, admission in IIT or NIT or other institute depends on GATE AIR Rank.

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Venkatesh replied | 06/05/2016

no, for all IIT,NIT and all universities GATE syllabus is same

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Divya 06/05/2016 in  GATE Coaching classes

What are the different types of single phase induction motor?

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Anshul replied | 09/05/2016

1.split phase
2.capacitor start
3. capacitor start capacitor run
4.permanent split capacitor
5.shaded pole

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Meenakshisundarams 05/05/2016 in  GATE Coaching classes

Show previous answers

Karthik replied | 06/07/2016

you will get good command on core subjects.it is very useful for government jobs.

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Ramalingam replied | 15/07/2016

unlike the university examinations, GATE requires thorough understanding of the fundamentals. In the case of university exams, the questions are of standard type. If you go through a few old question papers and prepare the answers for the same, you may easily score 80 % or more. But this is not the case with GATE. The questions test your basic understanding of the subjects. Hence,...  more»
unlike the university examinations, GATE requires thorough understanding of the fundamentals. In the case of university exams, the questions are of standard type. If you go through a few old question papers and prepare the answers for the same, you may easily score 80 % or more. But this is not the case with GATE. The questions test your basic understanding of the subjects. Hence, it is essential that you go through a very good GATE coaching institute, where the tricks of the trade are taught and your fundamentals are strengthened. «less

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Priya 05/05/2016 in  GATE Coaching classes

What all things should I consider before hiring a GATE coaching teacher?

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Elina replied | 06/07/2016

Should be gate qualified .

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