BHEL Recruitment Paper 3

1.      The ratio of two specific heats of air is equal to. = 1.41
2. A perfect gas at 270C is heated at constant pressure till its volume is double. The final
temperature is = 3270C
3. An engine operates between temperature of 9000K and T2 and another engine between T2 and
8000K. For both to do equal work, value of T2 will be. = 6500K
4. Internal energy of a substance depends on = Temperature
5. Work done in compressing 1kg of gas adiabatically from p1,V1,T1 to p2, V2, T2 is equal to =
6. The unit of entropy is = J/kg 0K
7. Indicated power of a 4-stroke engine is equal to = pLAN/2
8. Which of the following is not an internal combustion engine : a) 2 stroke petrol engine b)4
stroke petrol engine c) Diesel engine d) steam engine e) Gas turbine. = (d)
9. If one cylinder of a diesel engine receives more fuel than the others, then for that cylinder the:
a) exhaust will be smoky b) piston rings would stick into piston grooves c) exhaust
temperature will be high d) engine starts overheating e) all of the above. = (e)
10. The spark plug gap is normally maintained at: = 0.45 to 0.6mm
11. A distributor in spark ignition engines performs the function of : = Providing the correct firing order in engine
12. Which of the following does not relate to C.I. engine:: a) fuel pump b) fuel injector c) governor d) carburetor e) flywheel = (d)
13. Air fuel ratio in a jet engine is = 60:1
14. What is the value of Prandtl No.?
15. In domestic refrigerator, the tubes at the back of the refrigerator are: a) evaporator b) condenser c) capillary tubes d)………
16. Which refrigerants has the highest critical point temperature. = Freon-11
17. Wet bulb temperature is. = indication of amount of moisture in air
18. On psychrometric chart, dry bulb temperature lines are. = Vertical
19. Surface tension has the units. = newtons/m
20. The line of action of the buoyant force acts through the. =centroid of the displaced volume of
21. A pressure of 25m of head of water is equal to. =245kN/m2
22. For a submerged body to be in stable equilibrium, the centre of gravity should be. =Below the centre of buoyancy.
23. The actual velocity at vena contracta for flow through an orifice from a reservoir of height H=?. =Cv√2gH
24. A body weighing 2kg in air weights 2.5kg when submerged in water. Its specific gravity is. = 6
25. In a free vortex motion: = each particle moves in a circular path with a speed varying inversely as the distance from the centre.
26. A centrifugal pump has speed-1000rpm, Flow-1200l.p.m, Head-20m, Power-5H.P. If its speed is increased to 1500rpm, new flow will be.: = 1800l.p.m
27. Runaway speed of a hydraulic turbine is: = the speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open.
28. 10m of water column is equal to = 100kN/m2
29. M.I. of a circular area about an axis perpendicular to the area is: = πr4/2
30. A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is . =450
31. An elevator weighing 1000kg attains an upward velocity of 4m/sec in two seconds with uniform acceleration. The tension in the supporting cables will be = 1200kg.
32. A 13m ladder is placed against a smooth vertical wall with its lower end 5m from the wall.
What should be the co-efficient of friction between ladder and floor so that it remains in equilibrium. = 0.21
33. A car is moving with a velocity of 60km/hr and possesses energy of 5x105 joules. The mass of the car will be. =3000kg.
34. If l is the span of a light suspension bridge whose each cable carries total weight (w) and the
central diop is y, the horizontal pull at each support is: = wl/y OR
35. A beam of length l, having uniform load w kg/unit length is supported freely at the ends. The
moments at mid span will be: = wl2/8.
36. A boiler shell 200cm dia and plate thickness 1.5cm is subjected to internal pressure of 1.5MN/ m2, then the hoop stress will be. = 100N/m2
37. 100KW is to be transmitted by each of two separate shafts. A is turning at 250rpm and B at
300rpm. Which shaft must have greater diameter.: = B
38. Two identical leaf springs of spring constant k are arranged like cantilevers in parallel and
attached at free end by a spring of spring constant k. The equivalent spring constant of combination is; = 1.5k.
39. Automobile steering gear is an example of: = lower pair.
40. The type of coupling used to join two shafts whose axes are neither in same straight line nor
parallel, but intersect is. = Universal coupling.
41. To transmit power from one rotation shaft to another whose axes are neither parallel nor
intersecting, use: = Spiral gear.
42. A gear having 100 teeth is fixed and another gear having 25 teeth revolves around it, the centre lines of both gears being joined by an arm. How many revolutions will be made by gear of 25 teeth for one revolution of arm. = 5 rev.
43. The secondary critical speed of a shaft occurs at: = twice the speed of primary critical speed.
44. Brittle coating technique is used for: = experimental stress analysis.
45. Factor of safety is the ratio of: = yield stress/working stress.
46. Type of gear used for non-intersection perpendicular shafts: = Hypoid gears.
47. Corrosion resistance of steel is increased by adding: = Chromium & Nickel
48. The product of Cupola is called: = cast iron
49. Brinell tester uses a hardness steel ball of size: = 10mm
50. Sintered and tungsten carbides can be machined by: = EDM
51. What kind of abrasive cut off wheel should be used to cut concrete, stone and masonry?
=Diamond grit.
52. In break-even analysis, total cost consists of: = Fixed cost + Variable cost.
53. The amount deducted from the salary of workers towards employees provident fund is :
=deposited in the account of worker with Provident Fund Commissioner.
54. PERT is: = event oriented technique
55. Bar charts are suitable for: = minor works.
56. on a PERT/CPM chart represents: = a significant event representing some mile-stone
57. Electron volt is the unit of : = Energy.
58. Seamless tubes are made by?
59. Reheating in gas turbine results in: = increase of work ratio and decrease of thermal efficiency.
60. Why DC current is not used in transformer?
61. What is the purpose of draft tube in hydraulic turbines: = to convert the kinetic energy into
pressure energy.
62. A mass of 100kg is falling from a height of 1m and penetrates the sand to 1m. what is the
resistance force of the sand?
63. Two cars travel in the same direction at 40km/hr at a regular distance. A car comes in the
opposite direction at 60km/hr. It meets each car in a gap of 8 seconds. What is the distance
between the two cars?

34 Responses so far.

  1. Thanks very much for your great in sequence .And information full description . I feel it is Sus a topic that many kinds of people features many problems. thanks for this
    rent to own homes

  2. Top Automobile Engineering colleges in India

    PSG College of Technology

    Manipal Institute of Technology

    Acharya Institute of Technology

    SCMS School of Engineering and Technology

    Sathyabama University

    for admissions fell free to Call / SMS / Whatsapp : 9492066112
    visit your site:

  3. Shop 99 says:

    Very nice post, impressive. its quite different from other posts. Thanks for sharing.

    buy online orthopaedic heat belt

  4. GNA Gears says:

    Thank you for all the information was very accurate, just wondering if all this is possible. Ring Gears and Pinions

  5. Padhma says:

    A nice information i had found here. I hope this will be much useful or beneficial for the people those who are trying to match with their career options.
    Back to original

  6. Thanks for this post. This post makes a great point about focusing your efforts. mechanical engineering colleges in punjab

  7. Good content, I trust this is a good weblog about Wish to see refreshing content material next time. Thanks for sharing this publish with us.Battery Operated Ultrasonic Level Sensor

  8. Nice Blog Thanks for sharing this post with a lot of useful information. I would like to get updates from you. Keep blogging
    packers and movers vasai
    packers and movers cuttack

  9. very very amazing explaintion....many things gather about yourself...yes realy i enjoy it
    Digital Marketing company in Chennai

  10. Great Opportunity for my business modular kitchen designs for small kitchens photos. I need support to approval the comment and reviews some people view our business.

  11. This information is impressive; I am inspired with your post writing style & how continuously you describe this topic. After reading your post, thanks for taking the time to discuss this, I feel happy about it and I love learning more about this topic.

    Top 15 Schools of Mechanical Engineering and Software Engineering

  12. Hello admin! This is the remarkable article as well as it is valuable for the entire person and I want to say that I would like to write on this subject too. You have an interesting written on this topic.
    cash for scrap cars
    cash for junk cars
    cash for cars
    junk car removal
    car removal brisbane
    scrap car removal
    cash for cars ipswich
    cash for cars brisbane
    cash for cars caboolture
    cash for car logan

  13. Sabung Ayam Resmi 2018 klik di sini
    cheat games online

    dan dapatkan seputar sabung ayam hanya di sini

  14. Tips Paling Jitu Memenangkan Permainan Judi Sabung Ayam Online Klik Di Sini

    Agen Sabung Ayam Online Terbaik Dan Juga Terpercaya

    Informasi Terlengkap Mengenai Sabung Ayam

  15. Fantastic Post Thanks for sharing this kind of wonderful post from this website

    Packers and movers tuticorin Packers and movers nagercoil

    BBM : 7AC8D76B
    LINE : S1288_POKER

  17. Thanks for your great article. Totally super evrything you said. Kindly visit us @
    Packers and movers nagercoil
    Packers and movers tuticorin

  18. thanks for sharing informative article with us

  19. Bee Yes says:

    Amazing Article ! I have bookmarked this article page as i received good information from this. All the best for the upcoming articles. I will be waiting for your new articles. Thank You ! Kindly Visit Us @ Coimbatore Airport Taxi | Ooty Travels

  20. Sashina says:

    I want you to thank for your time of this wonderful read


  21. It is really a helpful blog to find some different source to add my knowledge. I came into aware of new professional blog and I am impressed with suggestions of author.
    Used Car Buyers Melbourne

  22. Amazing article. Your blog helped me to improve myself in many ways thanks for sharing this kind of wonderful informative blogs in live. I have bookmarked more article from this website. Such a nice blog you are providing ! Kindly Visit Us @ Best Travels in Madurai | Tours and Travels in Madurai | Madurai Travels

  23. Rigid Box says:

    Information from this blog is very useful for me, am very happy to read this blog Kindly visit us @ Luxury Watch Box | Shoe Box Manufacturer | Luxury Cosmetics Box

Leave a Reply