RRB Junior Engineer JE Mechanical Previous Question Papers | Indian Shout

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RRB Junior Engineer JE Mechanical Previous Question Papers


 RRB JE MECHANICAL ENGINEER TECHNICAL QUESTIONS

A.. A single acting reciprocating pump, running at 60 r.p.m, delivers 0.01 m2/sec of water. The area of the piston is 0.05m2 and stroke length is 40 cm. Then theoretical discharge of the pump will be
(a) 0.015 m3/sec
(b) 0.02 m3/sec
(c) 0.025 m3/sec
(d) 0.03 m3/sec
Ans:- B 
 
In question (A), the co-efficient of discharge would be
(a) 0.9
(b) 0.8
(c) 0.6
(d) 0.5
Ans:- D
 
In question (A), the slip of the pump would be
(a) 0.02 m3/sec
(b) 0.01 m3/sec
(c) 0.005 m3/sec
(d) 0.003 m3/sec
Ans:- B

 

Work done in a free expansion process is
a.0
b.minimum
c.maximum
d. positive

In a reciprocating engine
a. crankshaft and flywheel form 2 kinematic links
b. crankshaft and flywheel form 1 kinematics links
c. crankshaft and flywheel do not form kinematic links
d. flywheel and crankshaft separately form kinematic links

A kinematic chain is known as a mechanism when
a.none of the link is fixed
b.one of the links is fixed
c. two of the links are fixed
d.all of the links are fixed

The impact strength of an material is an index of its
a. Toughness
b. Tensile strength
c. Capability of being cold worked
d. Hardness
e. Fatigue strength
Ans :: a
 
A feeler gauge is used to check
a. Radius
b. Screw pitch
c. Surface roughness
d. Unsymmetrical shape
e. Thickness of clearance
Ans :: e
 
The possibility of negative slip in reciprocating pump is when
(a) delivery pipe is short
(b) suction pipe is long
(c) pump is running at high speed
(d) all of the above
Ans:- D
 
The slip in the reciprocating pump will be negative if
(a) Qth > Qact
(b) Qth < Qact
(c) Qth = Qact
(d) none of the above
Ans:- B
 
Thermal efficiency of a closed cycle gas turbine plant increases by
a.reheating
b.intercooling
c.regenerator
d. all of the above
 
 The power required to drive a single acting reciprocating pump is equal to
(a) w.A.L.N / 4500
(b) w.A.L.N.(hs + hd)4500
(c) A.L.N. (hs + hd)/4500
(d) w.L.N/4500 where w = specific weight of water

Ans:- B

 The rate of flow of water through a double acting reciprocating pump is equal to
(a) A.L.N /60
(b) 2 AL.N/60
(c) A.L.N./2×60
(d) 3 A.L.N./60
Ans:- B

 

The rate of flow of water through a single acting reciprocating pump is equal to
(a) A.L.N /60
(b) 2 AL.N/60
(c) A.L.N./2×60
(d) 3 A.L.N./60
Ans:- A
 
Petrol commercially available in India for Indian passenger cars has octane
number in the range
A 40 to 50
B 60 to 70
C 80 to 85
D 95 to 100The knocking tendency in C.I engines increases with
A decrease of compression ratio

B increase of compression ratio
C increasing the temperature of inlet air
D increasing cooling water temperature
 
 The pump, which works on the principle of water hammer, is known as
(a) centrifugal pump
(b) reciprocating pump
(c) hydraulic ram
(d) none of the above
Ans:- C

 

The pump which raises water without any external power for its operation, is known as
(a) centrifugal pump
(b) reciprocating pump
(c) hydraulic ram
(d) hydraulic intensifier
Ans:- C
 
The power at the shaft of a centrifugal pump is 100 KW, and the power available at the impeller is 900 KW. If water horse power is 720 KW, then overall efficiency of the centrifugal pump will be
(a) 90% (b) 80% (c) 75% (d) 72%
Ans:- D

 

Metal in machining operation is removed by
a. Tearing chips
b. Distortion of metal
c. Shearing the metal across a zone
d. Cutting the metal across a zone
e. Pushing the metal with tool
Ans :: c

 

Which one of the following methods produces gear by generating process
a. Hobbing
b. Casting
c. Punching
d. Milling
e. Broaching
Ans :: a
 
The term W.Q.Hm / (75 S.H.P) for a centrifugal pump is known as
(a) mechanical efficiency (b) manometric efficiency (c) overall efficiency (d) none of the above
Ans:- C
 
If a circular chamber is introduced between the casing and the impeller, then casing is known as
(a) vortex casing (b) volute casing (c) casing with guide blades (d) none of the above
Ans:- A
 
The rotating part of a turbine is known as
(a) Impeller (b) Guide mechanism (c) Runner (d) None of the above
Ans:- A
 
 In case of Kaplan turbine, velocity of flow at inlet is
(a) less than that at outlet           (b) more than that at outlet
(c) equal of that at outlet            (d) none of the above
Ans:- C

 

The main advantage of the draft-tube is to convert
(a) pressure energy into kinetic energy
(b) kinetic energy into pressure energy
(c) pressure energy into electrical energy
(d) none of the above
Ans:- B
 
The pressure at the exist of the runner of a reaction turbine is generally
(a) more than atmospheric pressure
(b) equal to atmospheric pressure
(c) less than atmospheric pressure
(d) none of the above
Ans:- C

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145 Comments to “RRB Junior Engineer JE Mechanical Previous Question Papers”

  1. LAKHAN KUMAR says:
    June 15, 2013 at 10:47 pm

    please send last 10 year questions paper sir

  2. jay sharma says:
    June 15, 2013 at 8:22 am

    Dear Sir,
    Please post me model question paper with answer for jr engineer (Mech) in armament depot for last 05 years.

  3. dhanesh maurya says:
    June 14, 2013 at 4:59 pm

    Sir
    please send junior engineer mechanical objective question answer paper.

    thanks

  4. md ali says:
    June 5, 2013 at 10:52 am

    sir plz send last 5 year question paper of je mechanical on my email

  5. sasikumar says:
    May 30, 2013 at 10:17 am

    sir kindly send me previous question papers of JE mechanical for the last 5 years

  6. KK says:
    May 28, 2013 at 9:53 pm

    Respected sir,
    can u please send me the last 5 year question papers of SSC JE MECHANICAL to my email id ………

  7. atul phuke says:
    May 27, 2013 at 2:13 pm

    Sir, please send me last 5 years old RRB mumbai JE mechanical question paper

  8. vipin kesherwani says:
    May 25, 2013 at 8:28 am

    Sir,please send me SSC je mechanical question paper on my email vipinkumarkesherwani9@gmail.com

  9. sanjeet kumar singh says:
    May 11, 2013 at 10:37 am

    Dear Sir,
    Please send me a model qeuestions paper jr engg. mechanical for last past 5 years.
    thanks.
    with warn rigards.
    sanjeet kumar singh

  10. Bala says:
    May 7, 2013 at 3:26 pm

    Sir,

    Please send me the Last ten years JE Mechanical Engineers question papers.

    Regards,
    Bala

  11. dinesh sahu says:
    April 3, 2013 at 4:04 pm

    dear sir , plz send model papers of je mechanical last 5 year.

  12. abhijit mondal says:
    March 29, 2013 at 9:20 pm

    need the syllabus and ouestion paaper of railwaya junior engineer exam

  13. Manohar bari says:
    March 28, 2013 at 8:04 am

    Respected sir

    plz send me last ten year question paper of rrb je mechanical .
    I am very thankful to you.

  14. govinda singh says:
    March 21, 2013 at 8:08 am

    dear sir,
    please give me the last 10 years Q paper for rrb and ssc junior engineer level in mechanical steame…in my email adress…
    i am awaiting for ur rpl

  15. TAHA says:
    March 18, 2013 at 10:32 am

    Res Sir,
    your enlightment is very helpfull to us.plz send me previous 5 years question paper for RRB JE MECHANICAL this wil help me a lot . send this on my id : taha.ipc@gmail.com
    Thanking you

  16. vinod sonar says:
    March 16, 2013 at 9:58 am

    sir plz send me last 10 years junior engineer mechanical question papers..

  17. R.Dhawan says:
    March 11, 2013 at 9:50 pm

    dear sir
    I request to you that pls send me last 5 years ssc je (mechanical) solved question paper on my email id- er.rdhawan@gmail.com

  18. suraj kumar dutta says:
    March 2, 2013 at 10:58 am

    Sir,
    Please sent last 5 question with answer for J.E mechanical i will very happy if u help me i will appear J.E exam on coming May 26,so please help me
    This is my email:surajkumardutta89@gmail.com

  19. ranjana sharda says:
    February 28, 2013 at 10:00 am

    please send me the solved question papers of ssc junior engineer for mechanical engineering.

  20. ritesh batra says:
    January 23, 2013 at 11:56 am

    sir i request u for send me previous question papers of RRB junior engineer of mechanical branch

  21. parveen kumar says:
    January 13, 2013 at 10:54 pm

    sir pls mail me in mechanical engg 5 quetion paper ..pls mail me at.. parveenkumar86@hotmail.com

    thanks

  22. parveen kumar says:
    January 13, 2013 at 10:51 pm

    sir,
    I get ready to giving water supply exam in mechanical engg side, so pls give me 5 qustion paper for suitable for me, please mail me .thanks

  23. Rajdeep Singh says:
    January 13, 2013 at 3:24 pm

    sir i need last 10 year papers for preparation for exam of MECHANICAL JE. my mail id is: rajdeep5343@gmail.com

  24. AMARENDRA KUMAR says:
    December 23, 2012 at 1:46 pm

    Sir, please send me last 5 year solved question papers for jr, engg. mechanical to my email id.
    my email id- amarendrakumar413@gmail.com

  25. Arjun Das says:
    December 16, 2012 at 8:49 pm

    dear sir,
    i want rrb junior engg(mechanical engg.) sample paper last 10 years. i request to you send
    it to my email id.
    arjunkatras@gmail.com

  26. yonakumar says:
    December 2, 2012 at 8:06 pm

    sir i kindly requesting you to sent me the previous exam papers of je to my id thanking you sir

  27. riten says:
    December 2, 2012 at 3:34 pm

    Dear sir/Madam I want to rrb j.e mechnical engg. last 10 years question papers hence request to you send it to my email id.

  28. rajinder kumar says:
    October 31, 2012 at 12:34 pm

    sir please send me last 5year jr engg. mech papers

  29. abdul rahman says:
    October 23, 2012 at 10:57 am

    dear sir/madam i want rrb ahmedabad je/sr.se mechanical engg. last 10 years question papers hence request to you send it to my email id.

  30. shanker says:
    October 21, 2012 at 10:47 pm

    plz send model papers of J.E. last 5 years

  31. Kiran says:
    September 11, 2012 at 2:28 pm

    Sir/Madam,

    please send me the last 5 yrs question papper(with ans:)rrb junior engineer .

  32. siva says:
    September 8, 2012 at 6:21 pm

    Dear Sir/Madam,

    Please send me last five years rrb Junior Engineer/Sr. Sec. Engineer question papers solved…could you send..awaiting a reply..

  33. rajesh says:
    September 8, 2012 at 1:26 pm

    please send the model question peaper &last five years question &answer send me thank you help me

  34. Arnab says:
    September 8, 2012 at 12:15 am

    Sir,
    plz send me last five years question papers with answer of rrb je examination for Mechanical.
    thank you.

  35. priya says:
    September 7, 2012 at 5:57 pm

    Dear friends kindly send last five years je mechanical question paper to my mail id.

  36. Amit says:
    September 5, 2012 at 8:58 pm

    Please provide me previous year question paper of RRB for JE (Civil ).

  37. Kamta dubey says:
    September 4, 2012 at 8:25 pm

    Respected sir,
    i m doing priperation for mechanical jr engineer . I want to previos 5 year question paper.
    So plz send me these matter.

  38. Pankaj says:
    September 3, 2012 at 8:22 pm

    Dear sir,

    Please send in previous years question answers for J.E.-Mechanical RRB Chandigarh.

    I will be obliged to you.

  39. shankar says:
    September 2, 2012 at 10:59 am

    please send last 5 years question papers jr engg mechanical

  40. Amruthesh says:
    September 1, 2012 at 8:43 am

    sir,
    This website is very use full. Thank you for that… If you could please send me the previous question papers of RRB junior engineer Mechanical stream.. It will be help full for me to crack this exam.. mail Id : amruthesh.vasista@gmail.com

    With warm regards
    Amruthesh

  41. uday says:
    August 31, 2012 at 8:30 pm

    hello sir i want rrb secunderabad junior engineer mechanical previous question papers sir please send it as soon as possible sir ,as the examination date is approaching sir

  42. RAM says:
    August 30, 2012 at 11:41 am

    sir
    send me previous quesyion papers

  43. karthik says:
    August 29, 2012 at 5:38 pm

    hi
    sir can u send me previous model paper for past 5 years

  44. praveen says:
    August 28, 2012 at 7:23 pm

    hi………
    please send last 5 year question papers jr engg mehanical

  45. abdul wahid says:
    August 28, 2012 at 12:15 pm

    sir please send me a model questions paper

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