#1
27th September 2014, 09:22 AM
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RRB Bhopal JE Mechanical Question Paper
Will you please provide the Question Paper of RRB Bhopal JE Mechanical exam ?
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#2
27th September 2014, 10:07 AM
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Re: RRB Bhopal JE Mechanical Question Paper
Here is the list of few questions of RRB Bhopal JE Mechanical exam which you are looking for . 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) 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) than atmospheric pressure (b) equal to atmospheric pressure (c) less than atmospheric pressure (d) none of the above Ans:- C |
#3
21st March 2015, 12:26 PM
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Re: RRB Bhopal JE Mechanical Question Paper
Sir I requested you to please forward me question paper of the RRB Bhopal JE Mechanical engineering?
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#4
21st March 2015, 12:27 PM
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Re: RRB Bhopal JE Mechanical Question Paper
As per your request, I am giving you railway recruitment board bhopal Junior engineer (Mechanical engineering) sample paper. 1. The bent-up length of rail used in front of nose of crossing which help in channelising the train wheels in their proper routes are known as: (a) lead rail (b) point rail (c) wing rail (d) splice rail Ans:- C 2.The point up to which the new railway track laid, at any time is called: (a) terminal (b) station (c) rail-head (d) base Ans:- C 3.The good quality wood for sleeper is: (a) Deodar (b) Sheesham (c) Teak (d) Sal Ans:- C 4.Generally the life of wooden sleepers is taken as: (a) 2 to 3 years (b) 12 to 15 years (c) 35 to 50 years (d) 5 to 8 years Ans:- B 5.The gradual or tapered widening of the flangeway which is formed by bending and splaying the end of check rail or wing rail away from the gauge line is known as: (a) Flare (b) Toe (c) Heel (d) Loop Ans:- A 6.The minimum height of embankment above the highest flood mark in the area should be: (a) zero cm (b) 30 cm (c) 100 cm (d) 60 cm Ans:- D 7.The recommended depth of ballast cushion on a curved portion of a track is provided under the ........ edge of the sleeper. (a) upper (b) middle (c) inner (d) outer Ans:- C 8. An outward slope provided on the tread of the wheel is: (a) 1 in 5 (b) 1 in 10 (c) 1 in 20 (d) 1 in 25 Ans:- C 9.The granular material spread on the formation of a railway track for the sleepers to rest upon is known as: (a) anchors (b) ballast (c) subgrade (d) chairs Ans:- B 10.Bone shaped section of fish plate is commonly used for connecting: (a) double headed rails (b) flat footed rails (c) bull headed rails (d) all above are correct Ans:- B 11.The members laid transversely under the rails for supporting and fixing them at the gauge distance apart are known as: (a) fastenings (b) sleepers (c) ballast (d) fish plate Ans:- B Downloaded From Online Mock Test Free Practice Test Online JbigDeaL.com 12.The bottom width of foot in a flat footed rail is: (a) 78.6 mm (b) 136.5 mm (c) 66.7 mm (d) 70 mm Ans:- B 13.The rectangular pits in which wheels of the locomotives are taken out for repairs, are known as: (a) Track pits (b) Inspection pits (c) Drop pits (d) Siding pits Ans:- C 14. The wheels are coned to prevent from rubbing the inside face of the rail head and to prevent lateral movement of the axle with its wheels. The slope of cone is: (a) 1 in 5 (b) 1 in 20 (c) 1 in 10 (d) 1 in 15 Ans:- B 15. Gauge is the distance measured in place of the between which faces of two parallel rails in a track. (a) inner faces (b) centre line of one rail to inner face of other rail (c) centre lines (d) outer faces Ans:- A 16. Most significant which imposes limitations in raising the high speeds is: (a) adhesion of wheels (b) resistance due to oscillations (c) flange resistance (d) air or wind resistance Ans:- A 17. The rails are welded by: (a) Thermit welding (b) Gas welding (c) Arc welding (d) MIG welding Ans:- A 18. Steel sleepers are ..... shaped in section. (a) oval (b) rectangular (c) trough (d) semi-spherical Ans:- C 19. In India generally the sleeper density of sleepers per rail length used is: (a) 18 (b) 30 (c) 12 (d) 24 Ans:- A 20. The extra rails provided over bridge to prevent damage and danger in case of derailment on the bridge are known as: (a) Stock rails (b) Guard rails (c) Check rails (d) Wing rails Ans:- B 21. The phenomenon of misalignment of rails due to temperature change is known as: (a) cropping (b) creeping (c) bulging (d) buckling Ans:- D 22. Creep is the ..... movement of rails. (a) longitudinal (b) diagonal (c) horizontal (d) vertical Ans:- A 23. Ballast best suited to steel sleepers is: (a) sand (b) Gravel (c) Quartzite (d) All the above Ans:- C |
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