Posted tagged ‘tata motors’

List of mechanical core companies in India

October 10, 2011

Dear Friend,

Don’t think about the job as you are a student of an evergreen as well as a core branch i.e.,Mechanical stream.

there are so many chances in Govt. as well as private companies.

There huge number of Core Companies for Mechanical engineer.
some of them are:

1:Hindustan Motors Ltd
2:Hyundai Motors India Ltd
3:Mahindra & Mahindra
4:Royal Enfield Ltd
5:Addison & Co Ltd
6:Ashok Leyland Ltd, Ennore
7:Axles India Ltd
8:TATA Motors
9:Sundaram-Clayton Ltd
10:Tractor and Farm Equipment (TAFE)
11:Tube Investments of India Ltd
12:FIAT
13:Bharat Electronics Ltd.(BEL)
14:Jindal Steel
15:Steel Authority of India Limited(SAIL)
16:Geometrics ,The Developers software for Machine Companies etc…..

Good luck!!!
Good luck!!!

Air-Powered Car Coming to Hit 1000-Mile Range

September 25, 2011


The Air Car caused a huge stir when we reported last year that Tata Motors would begin producing it in India. Now the little gas-free ride that could is headed Stateside in a big-time way.

01-aircar-air powered car-zero pollution motor-tata motors-hit 1000 miles

Zero Pollution Motors (ZPM) confirmed on Thursday that it expects to produce the world’s first air-powered car for the United States by late 2009 or early 2010. As the U.S. licensee for Luxembourg-based MDI, which developed the Air Car as a compression-based alternative to the internal combustion engine, ZPM has attained rights to build the first of several modular plants, which are likely to begin manufacturing in the Northeast and grow for regional production around the country, at a clip of up to 10,000 Air Cars per year.

And while ZPM is also licensed to build MDI’s two-seater One CAT economy model (the one headed for India) and three-seat Mini CAT (like a Smart For Two without the gas), the New Paltz, N.Y., startup is aiming bigger: Company officials want to make the first air-powered car to hit U.S. roads a $17,800, 75-hp equivalent, six-seat modified version of MDI’s City CAT (pictured above) that, thanks to an even more radical engine, is said to travel as far as 1000 miles at up to 96 mph with each tiny fill-up.

01-aircar-production-launching next year-guy negre, MDI, Motor development International

We’ll believe that when we drive it, but MDI’s new dual-energy engine—currently being installed in models at MDI facilities overseas—is still pretty damn cool in concept. After using compressed air fed from the same Airbus-built tanks in earlier models to run its pistons, the next-gen Air Car has a supplemental energy source to kick in north of 35 mph, ZPM says. A custom heating chamber heats the air in a process officials refused to elaborate upon, though they insisted it would increase volume and thus the car’s range and speed.

“I want to stress that these are estimates, and that we’ll know soon more precisely from our engineers,” ZPM spokesman Kevin Haydon told PM, “but a vehicle with one tank of air and, say, 8 gal. of either conventional petrol, ethanol or biofuel could hit between 800 and 1000 miles.”

Those figures would make the Air Car, along with Aptera’s Typ-1 and Tesla’s Roadster, a favorite among early entrants for the Automotive X Prize, for which MDI and ZPM have already signed up. But with the family-size, four-door City CAT undergoing standard safety tests in Europe, then side-impact tests once it arrives in the States, could it be the first 100-mpg, nonelectric car you can actually buy?

TATA Motors Recruitment Test

August 23, 2011

Some of the questions that were asked in this test include:

1. When boiler bursts, whom u would inform?
2. What does one mean by modular ratio?
3. What is ‘envelope of damped free vibration’?
4. A ball with a mass M is falling on to the ground with some velocity V1 and rising with velocity V2 . Find the impulse?
5. Contd.. for 5th problem. When time of contact is given then find force exerted on the ground.
6. Two masses are connecting with string on to pulley coefficient of friction of mass m1 is given and also m1 and m2 are given. Find the relation b/n m1 and m2 , to make m2 move downwards .
7. In a damped free excitation system maximum amplitude occurs
a. before resonance             b. after resonance
8. What are set screws?
9. A four bar link mechanism is given with moment m acting on crank and also a force given at crank end. Find the reaction at hinged end of crank.
10. Deflection due to self weight of a uniform rod of diameter D and unit density and length is given by____________.
11. Name the type of key used in wrist watch?
12. Bending stress is proportional to_____________
13. The hypoid gears are __________
14. Hollow cylinder of outer D0 is given. Find the diameter of solid cylinder for the same material and same torsional strength ?
15. What is the principle plane ?
16. Two masses are resting on a inclined plane with 30 degree angle and the two masses are welded with weightless rod and coefficients of friction is given. Find the common acceleration of a two masses.
17. Two masses are of different weights smaller one is placed on the bigger mass. If the force is acting on bigger mass (given),  find the acceleration of smaller mass.
18. Stress on minor diameter of bolt when bolt is subjected to longitudinal force.
19. no of independent elastic constants required for isotropic material?
20. pitch of the bolt of 30 mm metric thread dia meter is?
21. the ratio of natural frequency on earth to moon?
22. upper portion of set screw is given fig shown and asked which type of set screw is ?
23. Efficiency of screw jack formula?
24. which of the parts given is harder one? Ans a). inner case b)outer case like that?
25. Max efficiency of screw jack formula?
26. Given some c/s of diffirent types which is having more torsional strength ?
27. Max principle stress theory is valid for which material?
28. efficiency of reveted joints of different types has given which is having max efficiency ?
29. if the roots are real then which type of vibrations will occur in damped systems ?
30. problem on transmissibility ?
31. when the disc is rotating on which on man is standing at the edge then what is the possibility of increase in speed of the disc? A).man moves towards centre b)out ward? Like that
32. what is the principle behind the collisions of ball ?which is related to Q.7 ? ans constant linear momentum.
33. Find the elongation of the bar due to self weight
34. Problem on the cantilever deflection
35. Problem on the two blocks connected by string one is on table and on is hanging from the pulley…mechanics’ problem
36. Ratio of the tension of the band block breaks
37. max and normal efficiency of the power scew
38. what is monel metal
39. for which material max normal stress theory is used
40. efficiency of the riveted joints
41. coefficient of friction for the greased ball bearing
42. which key is used in wrist watch
43. bending stress is proportional to 1. directly/inversely proportional to section modulus
44. find the width of the strongest beam that can be cut of cylindrical log of wood whose dia is ‘d’
45. if the phi is friction angle then which of the following can not be the value of the tan(phi) a) 0 b) 1.5 mu etc. ans is 0
46. problem on the transmissibility …to calculate dynamic amplitude
47. what is the poison’s ratio?

Answers:

12. Bending stress is proportional to  section modulus
13. The hypoid gears are non intersecting non parallel gears.