Top 10 Interview Question With Answer

Tell me about yourself?                             

• Start with your name
• Give your place information
• Education in short
• Job experience if any
• Family details in short

Example :   My name is Ram Babu. I live in Noida. I have done B.Tech. in Mechanical engineering. I have 1 years experience in production engineering.

Why do you want to work at our company

• Tell them what you like about company
• Relate it to your long-term career goals

For example:- Sir, it is a great privilege for anyone to work in a reputed company like yours. When read about your company i found that my skills are matching your requirements, where i can showcase my technical skills to contribute to the company growth.

What are your strength?

• Adaptability
• Hard working
• Honest
• Flexibility
• Optimistic
• Fast decision making
• persistence
• self motivated

For example:

I am honest, self motivated and hardworking boy/girl with positive attitude towards my career and my life.

What are your weakness?

• straightforward
• Impatient
• Sensitive
• More talkative
• Trust people very quickly
• I can't say no when someone ask for help
• Take decision very quickly
• Gets nervous when talk to strangers
• To speak lie is difficult for me
• I am a bit lazy about which i am not interested

For example :- 

I can't say no when someone ask for help and i am a bit lazy about which i am not interested.

Why should i hire you?

• Share your knowledge
• Work experience
• Skills related to job
• Career goals

For example:

for fresher's: Sir, as i am fresher, i have theoretical knowledge but i can do hard work for my knowledge for my organisation. And i will put all my efforts for the good progress of organisation. Being punctual and sincere, i can finish the work given to me on time and try my best to fulfill all the needs of company from me.

for experience:

With reference to my work experience, i satisfy all the requirement for this job. i am sincere with my work & would never let you down in anyway. I promise you will never regret for the decision to the appoint me in your organisation.

Tell me what you know about this company?

• Study about the company in details
• Do the background work about new projects
• Know the names of their owners and partners
• Research about the company current issues
• Update your knowledge about their competitors

For example:

It is one of the best fastest growing company in India. The work environment of the company is very good . People feel proud to be part of thye company as company provides full support to their employees in professional front it has many branches across the world so i have good opportunity to show my talent.

Why are you looking for a job change?

• Thanks to previous organisation
• Explain what you learn from past job experience
• Share your reason for job change
• Relate to career goals

for example:

I am thankful to my previous organisation because i have learnt a lot of things from there. According to me changes are necessary for everyone to enhance your skills, knowledge and for personal growth and financial growth. Your organisation is the good platform where i can learn more.

What are your salary requirements?

• Never share your salary requirement as a fresher
• Experience candidate can share their expected salary
• Always say as per the company norms for the job

Example

For fresher:

I am a fresher. salary is not first priority for me. This is a big platform to start my career and i also want to improve my knowledge and skill and gain experience. So i expect a considerable of salary according to my ability and your company's norms which will fulfill my economical needs.

For experience :

I have 8yrs experience in HR field. My current CTC is 6 lpa salary has never been big issues for me. Still I am expecting salary as company's norms as per my designation and my qualification and experience which can help me to maintain the standard of level of my personal and economical needs.

What are your career goals?

• Short term goals
• Long term goals

For example:

 My short term goals is to get a job in reputed company where i can utilize my skills and improve my career path. My long term goals is to be in respectable position in that organisation.

Finally, do you have any questions to ask me?

• Express thanks
• Salary structure 
• Job timing
• Job location
• Overtime allowance
• Training period
• Transport facility

For example

Thank you for giving this opportunity. sir i would like to know about the job timing and transport facility and what will be the job location and salary scale for this job in your organisation?

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Piston

A piston is a component of reciprocating engines, reciprocating pumps, gas compressors and pneumatic cylinders, among other similar mechanisms. It is the moving component that is contained by a cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod. In a pump, the function is reversed and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluid in the cylinder. In some engines, the piston also acts as a valve by covering and uncovering ports in the cylinder wall.

Contents

  [hide] 

• 1Piston engines
  • 1.1Internal combustion engines
    • 1.1.1Trunk pistons
    • 1.1.2Crosshead pistons
    • 1.1.3Slipper pistons
    • 1.1.4Deflector pistons
  • 1.2Steam engines
• 2Pumps
  • 2.1For liquids
  • 2.2For gases
• 3Air cannons
• 4See also
• 5External links

Piston engines[edit]

Main article: Reciprocating engine

Internal combustion engines[edit]

Internal combustion engine piston, sectioned to show the gudgeon pin.

An internal combustion engine is acted upon by the pressure of the expanding combustion gases in the combustion chamber space at the top of the cylinder. This force then acts downwards through the connecting rod and onto the crankshaft. The connecting rod is attached to the piston by a swivelling gudgeon pin (US: wrist pin). This pin is mounted within the piston: unlike the steam engine, there is no piston rod or crosshead (except big two stroke engines).

The pin itself is of hardened steel and is fixed in the piston, but free to move in the connecting rod. A few designs use a 'fully floating' design that is loose in both components. All pins must be prevented from moving sideways and the ends of the pin digging into the cylinder wall, usually by circlips.

Gas sealing is achieved by the use of piston rings. These are a number of narrow iron rings, fitted loosely into grooves in the piston, just below the crown. The rings are split at a point in the rim, allowing them to press against the cylinder with a light spring pressure. Two types of ring are used: the upper rings have solid faces and provide gas sealing; lower rings have narrow edges and a U-shaped profile, to act as oil scrapers. There are many proprietary and detail design features associated with piston rings.

Pistons are cast from aluminium alloys. For better strength and fatigue life, some racing pistons may be forged instead. Early pistons were of cast iron, but there were obvious benefits for engine balancing if a lighter alloy could be used. To produce pistons that could survive engine combustion temperatures, it was necessary to develop new alloys such as Y alloyand Hiduminium, specifically for use as pistons.

A few early gas engines^{[note 1]} had double-acting cylinders, but otherwise effectively all internal combustion engine pistons are single-acting. During World War II, the US submarine Pompano^{[note 2]} was fitted with a prototype of the infamously unreliable H.O.R. double-acting two-stroke diesel engine. Although compact, for use in a cramped submarine, this design of engine was not repeated.  Media related to Internal combustion engine pistons at Wikimedia Commons

Trunk pistons[edit]

Trunk pistons are long relative to their diameter. They act both as a piston and cylindrical crosshead. As the connecting rod is angled for much of its rotation, there is also a side force that reacts along the side of the piston against the cylinder wall. A longer piston helps to support this.

Trunk pistons have been a common design of piston since the early days of the reciprocating internal combustion engine. They were used for both petrol and diesel engines, although high speed engines have now adopted the lighter weightslipper piston.

A characteristic of most trunk pistons, particularly for diesel engines, is that they have a groove for an oil ring below the gudgeon pin, in addition to the rings between the gudgeon pin and crown.

The name 'trunk piston' derives from the 'trunk engine', an early design of marine steam engine. To make these more compact, they avoided the steam engine's usual piston rod with separate crosshead and were instead the first engine design to place the gudgeon pin directly within the piston. Otherwise these trunk engine pistons bore little resemblance to the trunk piston; they were extremely large diameter and double-acting. Their 'trunk' was a narrow cylinder mounted in the centre of the piston.

 Media related to Trunk pistons at Wikimedia Commons

Crosshead pistons[edit]

Large slow-speed Diesel engines may require additional support for the side forces on the piston. These engines typically use crosshead pistons. The main piston has a large piston rod extending downwards from the piston to what is effectively a second smaller-diameter piston. The main piston is responsible for gas sealing and carries the piston rings. The smaller piston is purely a mechanical guide. It runs within a small cylinder as a trunk guide and also carries the gudgeon pin.

Because of the additional weight of these pistons, they are not used for high-speed engines.

 Media related to Crosshead pistons at Wikimedia Commons

Slipper pistons[edit]

Slipper piston

A slipper piston is a piston for a petrol engine that has been reduced in size and weight as much as possible. In the extreme case, they are reduced to the piston crown, support for the piston rings, and just enough of the piston skirt remaining to leave two lands so as to stop the piston rocking in the bore. The sides of the piston skirt around the gudgeon pin are reduced away from the cylinder wall. The purpose is mostly to reduce the reciprocating mass, thus making it easier to balance the engine and so permit high speeds. A secondary benefit may be some reduction in friction with the cylinder wall, since the area of the skirt, which slides up and down in the cylinder is reduced by half. However most friction is due to the piston rings, which are the parts which actually fit the tightest in the bore and the bearing surfaces of the wrist pin, the benefit is reduced.

 Media related to Slipper pistons at Wikimedia Commons

Deflector pistons[edit]

Two-stroke deflector piston

Deflector pistons are used in two-stroke engines with crankcase compression, where the gas flow within the cylinder must be carefully directed in order to provide efficientscavenging. With cross scavenging, the transfer (inlet to the cylinder) and exhaust ports are on directly facing sides of the cylinder wall. To prevent the incoming mixture passing straight across from one port to the other, the piston has a raised rib on its crown. This is intended to deflect the incoming mixture upwards, around the combustion chamber.^[1] Much effort, and many different designs of piston crown, went into developing improved scavenging. The crowns developed from a simple rib to a large asymmetric bulge, usually with a steep face on the inlet side and a gentle curve on the exhaust. Despite this, cross scavenging was never as effective as hoped. Most engines today use Schnuerle porting instead. This places a pair of transfer ports in the sides of the cylinder and encourages gas flow to rotate around a vertical axis, rather than a horizontal axis.^[2]

 Media related to Deflector pistons at Wikimedia Commons

Steam engines[edit]

Cast-iron steam engine piston, with a metal piston ring spring-loaded against the cylinder wall.

Steam engines are usually double-acting (i.e. steam pressure acts alternately on each side of the piston) and the admission and release of steam is controlled byslide valves, piston valves or poppet valves. Consequently, steam engine pistons are nearly always comparatively thin discs: their diameter is several times their thickness. (One exception is the trunk engine piston, shaped more like those in a modern internal-combustion engine.) Another factor is that since almost all steam engines use crossheads to translate the force to the drive rod, there are few lateral forces acting to try and "rock" the piston, so a cylinder-shaped piston skirt isn't necessary.

Early (c. 1830) piston for abeam engine. The piston seal is made by turns of wrapped rope.

Pumps[edit]

Piston pumps can be used to move liquids or compress gases.

For liquids[edit]

Main article: Reciprocating pump

For gases[edit]

Main article: Reciprocating compressor

Air cannons[edit]

There are two special type of pistons used in air cannons: close tolerance pistons and double pistons. In close tolerance pistons O-rings serve as a valve, but O-rings are not used in double piston types.

See also[edit]

• Air gun
• Fire piston
• Fruit press
• Hydraulic cylinder
• Slide whistle
• Wankel engine (an internal combustion engine with a rotary 'piston')
• Steam locomotive components
• A gas operated firearm uses a gas piston to operate the action of the weapon
• Many everyday objects contain pistons of one form or another; for example, a syringe is a rubber piston inside of a cylinder; shock absorbers and pneumatic door closers contain pistons.

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Bearings

Bearings are highly engineered, precision-made components that

enable machinery to move at extremely high speeds and carry 

remarkable loads with ease and efficiency.

Bearings must be able to offer high precision, reliability and durability, 

 as well as the ability to rotate at high speeds with minimal noise and vibration.

Bearings are found in applications ranging from automobiles, airplanes, computers, construction

equipment, machine tools, DVD players, refrigerators and ceiling fans.

If something twists, turns or moves, it probably has a bearing in it.

Ball Bearings: 

–Rolling function is provided by a ball 
–Low friction, high speed, light to medium loading 
–Light and general machine applications 

Commonly found in fans, roller blades, wheel bearings, and under hood applications on cars etc. 

Cylindrical & Needle Roller Bearings:

Where the rolling function is provided by a cylinder of some kind.

May also be referred to as needle roller bearings (where length is 

much greater than diameter)

-Low friction, medium to heavy radial loading 

Commonly found in general machine applications including gearboxes 

and transmissions, machine tool and construction equipment.

Tapered Roller Bearings:

A tapered version of a roller bearing is used for combined axial

and radial loads, such as in wheel applications on trucks 

Commonly found in heavy industrial, truck and wheel applications with

 combined radial and axial loads. Some examples are manual 

transmissions, gearboxes, power generation and other process equipment.

Spherical Roller Bearings:

 A roller bearing that has a barrel shaped roller. 
- Medium friction, medium to heavy loads and misalignment capabilities 
- Generally used for very high load applications with misaligned shafts to housings. 

Commonly found in gearboxes, conveyors, pulp and paper machines and other process equipment.

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GATE-2016 Result::Check Now

 

1. Go to appsgate.iisc.ernet.in
2. Open account
3. see result
4. Best of luck!

 

Gate results 2016 with Rank Marks: Indian Institute of Science (IISc), Bangalore is going to perform the Graduate Aptitude Test in Engineering (GATE) 2016 for giving the admittance for scholars in to post graduation engineering courses on different dates from January to February 2016. Previously it has received the applications from vast number of suitable applicants for this GATE exam 2016. Now, all those candidates applied and get ready for the GATE exam 2016 are keenly waiting for their results which will be obtainable in the certified website www.gate.iisc.ernet.in from 19^th of March 2016 as per the administrator authorities and as soon as it releases the applicants can also download it from the link given in our website or openly from the certified website as given above. Complete details of the accessibility of the results for the GATE exam and other details are given below and so candidates applied are advised to refer those details.

Details of GATE Exam 2016

Name of the organization: Indian Institute of Science (IISc), Bangalore

Exam Name: Graduate Aptitude Test in Engineering (GATE) 2016

Exam Dates: 30th January 2016 to 7th February 2016

Availability of Score Card Starts from: 27th March 2016 to 19^th May 2016

Result Date: 19th March, 2016 (Tentative)

Official Website: www.gate.iisc.ernet.in

Check the information of Gate results 2016

 

The result will be publicized on March 19, 2016 at 5 pm. Applicants who have appeared for the GATE test must register in through GOAPs and ensure for their GATE 2016 Result. Candidates may memo that the GATE Score Card will be obtainable for download from March 27 to May 29, 2016 only. Candidates can confirm for their marks, score and the qualifying marks through the GATE Result 2016. Candidates may memo that the GATE rank marks will be the foundation for admittance to the M.Tech courses at the IITs, NITs, some of the CFTIs and lots of other personal universities as well as state universities. The result will be used as a limit for employment by some of the PSUs who may promote consequently. It may also be noted that the GATE result marks will be applicable for three years from March 19, 2016 onwards.

Gate 2016 Results with Rank Marks Score Analysis

As per my communications with students and analysis done from our students at GATE Academy across our 50+ centres, this year extra number of students have scored above 70 marks contrasted to previous year but the flip side is that because more numeral of scholars are above 70 marks, their ranks have gone high as compared to last year. It is getting very competitive.

This year we see more learners have eligible in GATE when compared to the 16% figure of GATE 2015. One vital thing we have noticed is that students are taking GATE training very sincerely and competition is growing year by year which is a very good indication.

Gate Result 2016 Score Card Download

To check the Result, aspirants must go into their GATE 2016 Enrolment ID or Registered Email ID. After logging in, they can verify their GATE Result and score.

The GATE 2016 Score Card will exhibit the following information:

·         Name of the applicant,

·         GATE 2016 register No,

·         Examination Paper

·         Marks out of hundred

·         Qualifying marks for the regulation.

After the declaration of the results, the Gate Scorecards can be downloaded by the all SC/ST/PWD aspirants whose marks are greater than equal to the qualifying mark of SC/ST/PWD aspirants for their respective papers and same for OBC candidates. Candidates must keep in mind that the GATE result will be now for information sake. The GATE 2016 Score Card will be the real file to be downloaded and used by candidates for their admittance or employ in PSUs as the require may be.

 

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Check Your GATE-2016 Result

GATE-2016 Result Out

Check Your Result

 Important event and Date of GATE-2016

Important Event                DATE

Result                      >  18 March Score Card Release  > 27 March Score card online end >  29 May Validity of GATE  2016                          >Three Years

 Result of GATE 2016 Contains following Details

Result of GATE-2016 Contains Following Details

>>Name of candidate >>Registration Number of Candidate >>Gender of candidate >>Examination Ppaer >>Marks out of 100 >>All India Rank >>GATE Score >>Qualifying marks

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