Showing posts with label RRB JE. Show all posts

Sunday, 18 September 2022

Welding Questions Set 1 - Production Engineering Expected Questions in exams (SSC JE, RRB JE, TNPSC AD, BHEL, HPCL, TRB)

Production Engineering - Expected Questions in exams

(SSC JE, RRB JE, TNPSC AD, BHEL, HPCL, TRB Polytechnic Lecturer / Asst. Prof)

Welding - Set 1

1. In resistance welding pressure is released

(a) Just all the time of passing the current

(b) After completion of current

(c) After the weld cools

(d) During heating period

2. Oxygen to acetylene ratio in case of oxidizing flame is

(a) 1 : 1

(b) 1.2 : 1

(c) 1.5 : 1

(d) 2 : 1

3. The used for coating the electrode is called

(a) Protective layer

(b) Binder

(d) Flux

4. Which of the following is not a welding accessory?

(a) Cable

(b) Electrode holder

(d) Gloves

5. The transformer used for AC welding sets is:

(a) Booster type

(b) Step up type

(c) Step down type

(d) Equal turn ratio type

6. In arc welding, arc is created between the electrode and work by

(a) Flow of current

(b) Voltage

(d) Contact resistance

7. The phenomenon of weld decay occurs in:

(a) Cast Iron

(b) Brass

(d) Stainless steel

8. In electric resistance welding, pressure applied varies from

(a) 1 to 5 Mpa

(b) 5 to 10 Mpa

(d) 25 to 55 Mpa

9. Seam welding is a

(a) Continuous spot welding process

(b) Multi-spot welding process

(d) Process used for joining round bars

10. Projection welding is a

(a) Continuous spot welding process

(b) Arc welding process

(e) Multi-spot welding process

11. In arc welding, the temperature of heat produced by the electric arc is of the order of

(a) 3000^o C to 4000 ^o C

(b) 4000 ^o C to 5000 ^o C

(d) 6000 ^o C to 7000 ^o C

12. In shielded arc welding

(a) Large electrode is used

(b) Welding rod coated with slag is used

(c) Welding rod coated with fluxing material used

(d) None of the above

13. Which of the following welding method uses a pool of molten metal?

(a) Carbon arc welding

(b) Submerged arc welding

(d) MIG welding

14. In welding copper alloys with TIG arc welding

(a) Direct current with straight polarity used

(b) Direct current with reverse polarity used

(d) Any one of these

(e)

15. Which of the following welding process uses non-consumable electrodes?

(a) TIG welding

(b) MIG welding

(d) Submerged arc welding

16. Thermit, used in thermit welding , is a mixture of

(a) Charcoal ang iron oxide

(b) Charcoal and Aluminium

(c) Iron oxide and Aluminium

(d) Charcoal, iron oxide and Aluminium

17. Thermit welding is often used in

(a) Replacing broken gear tooth

(b) Repairing broken shears

(d) All of the above

18. Electron beam welding can be carried out in

(a) Open air

(b) A shielded gas environment

(c) Vacuum

(d) A pressurized inert gas chamber

19. The oxy-acetylene gas is used in gas welding produce a flame temperature of

(a) 1800 ^o C

(b) 2100 ^o C

(d) 3200 ^o C

20. For gas welding , the pressure desired at the welding torch for acetylene is

(a) 7 to 103 KN/m²

(b) 70 to 280 KN/m²

(d) 560 to 840 KN/m²

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Saturday, 31 August 2019

RRB JE CBT 2 Exam - 29th August Morning Shift: Memory Based Questions asked and Answers

RRB JE 2019 Exam

CBT 2 - 29th August Morning Shift Asked Questions

Click here for 30th August Questions

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To Download RRB JE CBT 2 - 30th August Morning Shift Questions

Friday, 30 August 2019

RRB JE CBT 2 Exam - 30th August Morning Shift : Memory Based Questions asked and Answers

Questions Asked in RRB JE CBT 2 - 2019 Exam

30th August 2019 - Morning Shift

General Awareness Questions:

---------------------------------------------------------------------

01. Bombay Gold Cup is related to ______ Sport. (Hockey)
02. A Dam in Madhya Pradesh in____ River. Options: Narmadha/Chambal
03. Electron Configuration of an element is 2,8,7. What is its Atomic Number ? (Z=17)
04. Which is Newton's second law? (F=ma)
05. Mass of a body is 236 kg. It moves with acceleration of 4m/s2. Find Force acting in it? (F=ma).
06. Where is the Head Quarters of International Maritime Organization? (London)
07. What is Currency of Italy? (Euro)
08. Which year did Environmental Act enacted? (1986)
09. Binary No of 96?
10. Complimentary No of Binary Number (0110100) base 2 ?
11. Which is non volatile memory? Options: Flash/ROM/All/Hard risk
12. In Al2O3, oxidation Number of Al ? (+3)
13. Which is Avagadro Number ?
14. Which phase has definite shape and Volume? - Gas/Liquid/Solid/All
15. Rate of change of Displacement is____ - Velocity/Acceleration/Speed
16. Which has low capacity of Matter? Options: Atmosphere/Hydrosphere/Lithosphere
17. In which layer Ozone layer is present? - Stratosphere
18. Bus which connects CPU, IOP's and Hard disk?
19. Top line keys of keyboard are? - Functions/ Numbers/ letters
20. In Excel words are entered in _____ section. Options: Formula/Insert/Review/Page setup.
21. DRDO Remote controlled Vehicle? - Dhaksh
22. Asian Games 2022 to be held in?- Hanshou
23. Which metal can be cut by knife?- Sodium
24. Lionel Messi belongs to ? - Football
25. In Mirror formula 'v' is _____
26. Which is Exothermic reaction?
27. Which is not a renewable resources? - Uranium
28. The war happened after independence is? - WW1/WW2/Gulf War
29. 2018 Women Volley ball held in __?
30. Which part of India has 300 island and Cellular Jail? - Andaman & Nicobar.
31. Cause of ozone depletion? CFC
32. "Unity and Discipline" is Moto of ? - NCC.
33. Which law states "Pressure is inversely proportional to Volume"? - Boyle's law.
34. How many moles are there in 54g of Helium?
35. In which year Chernobyl disaster happened?
36. What is the cause of Global Warming ? - Air Pollution.
37. "SAMPRITHI" is a military exercise between India and _____ . (Bangladesh)
38. Pressure of uniformly moving fluid - Pascal Law related Question.
39. Incident ray, Normal ray and Reflected ray all lie in ___. (Same Plane)
40. Ultrasonic imaging of internal organs is done in ______. (Ultrasonography)
41. 1 kWhr = _______ Joules. (3600000)
42. Mass per unit volume ? (Density)
43. Litmus is produced from ____. (Fungi/Algae/Lichen)
44. Which state got GI tag for "Silao Khaja"? (Bihar)
45. What address bit is used in IPv4?
46. 100th Amendment? (India - Bangladesh Border change)

Mechanical Questions:

---------------------------------------------------------------------------

01. One Poisueille = _____ poise. (1/10)
02. Glazing in grinding can be reduced by ______.
03. What is full form of MRP 1?
04. Turning: feed rate - problem
05. Grinding: depth of cut - problem
06. In which welding electrode can be used without any coating?
07. Electron beam welding is done in ___ torr.
08. Which is Single point cutting tool?
09. Parting tool direction of feed?
10. Taper turning can be done by _______.
11. What is the formula for maximum elongation of spring?
12. In vertically loaded beam, compression is maximum at __. Options: Top/Bottom/Central Layer
13. What is Torsional rigidity?
14. Bulk Modulus 'k' is used to find ? Options: Euler No/Mach No/Froude No.
15. In which process Internal energy does not Change? (Isothermal Process)
16. Which type of cutters used in Broaching tool? (Coarse/Medium/Fine Cutting tool/All)
17. Bernoulli equation states about conservation of ______. (Energy)
18. Which law states "Moments of coplanar forces is constant until any external forces acting on them"?
19. What is melting point of Zinc? (419 °C)
20. In Brazing, Melting point of filler rod is above ___ °C. (400)
21. Internal holes, Slots finishing process is _____. Options:Broaching/Trepanning/Honing
22. Coefficient of velocity in orifice meter is ratio between ___.
23. Output of MRP is ______.
24. Seiketsu in 5S technologies used to ____. (Standardize)
25. Kanban is used in _______ (Just In Time Production)
26. In keyboard the top line keys are _______. (Functions)
27. Parkerizing is also called as _____.
28. Grinding with grain size 30-70 is ____ grinding. Options: Coarse/Medium/Soft
29. Which number is used to denote open type grinding? Options: 12/1/2/5
30. In 5" Sine bar, 2.5" is raised, the angle measured is ____. (30 degree)
31. Maximum angle which can be measured by Sine bar is _____. (45 degree)
32. The ratio of Arrival rate to Service rate is ____.
33. Service Level / Safety stock - problem
34. Ignition quality of Diesel fuel is denoted by_____. (Cetane Number)
35. Quenching is not necessary for which type of hardening?
36. Moment of Inertia or Section Modulus of Semi circle?
37. Efficiency of pump - problem.
38. Density of ice is 920 kg/m3. Density of Water is 1000kg/m3. Find the percentage of iceberg above water level? (8%)
39. How malleable C.I is produced from White Cast Iron?
40. What is composition of Austenitic Stainless steel ?
41. What is full form of DCEP in welding? (Direct Current Electrode Positive)
42. What is the process when n=1 in poly-tropic equation? ( Constant Temperature)
43. Size of Planar is ____________.
44. In lathe, Which contains Gears and back-end work? Options: Carriage/ Head Stock/Lathe bed
45. Truing is a process of ____________.
46. What is reverse electroplating? (Electro-polishing)
47. In Electrode, Amphere per unit cross sectional area is ______. (Current Density)
48. What is the unit of Stephen Boltzmann contant? (W/m2K4)
49. For stable condition, C.G of submerged body is ______. (below Centre of Buoyancy)
50. What is the term used for forces acting on bodies at rest? (Statics)
51. Which is a isolated system? (Thermoflask)
52. Steam with high pressure and temperature is produced by ____. (Steam boiler)
53. What is called as "Black Water"? (Sewage)
54. Back hand welding is also called as_____.
55. Maximum Temperature of Gas welding is _____.
56. Which metal has high malleability?
57. Which is diffusion element when carburising?
58. What is present in HypoEutectoid steel?
59. By heating martensite above 400°C, it will become?
60. Stiffness is resistant against _________.
61. Pascal law to moving fluid - 1 question.
62. Effort of screwjack is______.
63. If properties of a material is same in all directions, it is called _______. (Isotropic)
64. Bending moment is maximum where shear force is _____.
65. Dynamic Viscosity per unit density is ______. (Kinematic viscosity)
66. Pump's discharge is directly/indirectly proportional to Velocity/sq. of velocity of blades.
67. The Hydraulic grade line is Always ___________.
68. In which type inventory management system unnecessary extra stock will be kept ?
69. Which activity is placed before some activities should be completed to start next activity?
70. In a closed container constant pressure is maintained while heating from 25°C, the volume doubles. What will be the temperature at the end of this process?
71. What is inverse of permeability?
72. Manganese is added to CI by ________.
73. Pitot tube is _______. (Glass tube bent at 90°)
74. Interference fit - size of hole and shaft.
75. Which instrument used to measure inner and outside of holes? Vernier Calliper.
76. Which type Angle dekkor? - Autocollimator.
77. Tomlinson Meter is used to measure _______. Surface Roughness.