Description : What is the dia of thimble ? (i) 14-16 mm (ii) 16-18 mm* (iii) 18-20 mm (iv) None of the above
Last Answer : (ii) 16-18 mm*
Description : Height of crucible is kept from top surface of mould? (i) 30 mm (ii) 40 mm (iii) 50 mm* (iv) 60 mm
Last Answer : (iii) 50 mm*
Description : The diameter of hole for 20 dia rivet shall be a) 23 mm b) 18 mm c) 21.5 mm* d) 22 mm
Last Answer : c) 21.5 mm*
Description : What is the difference between rail flange of 60 kg & 52 rail section a. 20 mm b. 18 mm c. 14 mm* d. 16 mm
Last Answer : c. 14 mm
Description : After how much time lining of crucible should be changed ? (i) After every weld (ii) After 7 welds (iii) After every 10 welds* (iv) None of the above
Last Answer : (iii) After every 10 welds*
Description : Crucible is repaired by? (i) Magnasite Powder (ii) Magnasite Powder & Sodium Silicate.* (iii) Sodium Silicate (iv) Aluminium powder
Last Answer : (ii) Magnasite Powder & Sodium Silicate.*
Description : Total no. of probes fitted on digital double rail tester for rail testing are (i) 12 (ii) 8 (iii) 14* (iv) 16.
Last Answer : (iii) 14*
Description : What is the maximum shear stress induced in a solid shaft of 50 mm diameter which is subjected to both bending moment and torque of 300 kN.mm and 200 kN.mm respectively? a. 9.11 N/mm2 b. 14.69 N/mm2 c. 16.22 N/mm2 d. 20.98 N/mm2
Last Answer : b. 14.69 N/mm2
Description : Thickness of Lining/Charge is kept? (i) 20 mm. (ii) 25 mm* (iii) 30 mm (iv) As decided by the site supervisor
Last Answer : (ii) 25 mm*
Description : Minm. deflection during transverse breaking load test is? (i) 5 mm (ii) 10 mm (iii) 15 mm* (iv) 20 mm
Last Answer : (iii) 15 mm*
Description : The gap between probing face and probing shoe should be. (i) 0.4 mm (ii) 0.2mm * (iii) 3mm (iv) 1mm.
Last Answer : (ii) 0.2mm *
Description : If digital DRT is calibrated for 300 mm longitudinal wave using 00 double crystal probe then 60kg rail ---------peak will appear at (i) 5.2 (ii) 5.7* (iii) 7.8 (iv) 8.6
Last Answer : ii) 5.7*
Description : Marking on weld should be done (i) On centre of the rail head (ii) 10 mm below the top surface of rail head.* (iii) 10 mm above the bottom surface of rail head. (iv) None of the above
Last Answer : ii) 10 mm below the top surface of rail head.*
Description : To take care of differential cooling rail ends of 72 UTS rails are lifted by? (i) 1 to 1.5 mm (ii) 1 to 2 mm (iii) 2 to 2.5 mm (iv) 3 to 4 mm *
Last Answer : iv) 3 to 4 mm *
Description : Finished tolerance on 10 cm. long st. edge on surface of head shall be? (i) 0 to 0.1 mm (ii) 0 to 0.2 mm (iii) 0 to 0.4 mm* (iv) 0 to 0.3 mm
Last Answer : (iii) 0 to 0.4 mm*
Description : Finished tolerance on 10 cm long st. edge at the centre on gauge side shall be? (i) ± 0.4 mm (ii) ± 0.1 mm (iii) ± 0.2 mm (iv) ± 0.3 mm*
Last Answer : iv) ± 0.3 mm*
Description : Finished tolerance on 1 Mt. long st. edge on surface of head shall be? (i) 0 to .1 mm (ii) 1 to 1.5 mm (iii) 0 mm (iv) 0 to 1 mm*
Last Answer : (iv) 0 to 1 mm*
Description : Finished tolerance on 1 Mt. st. edge at the centre on gauge side shall be? (i) ± 0.2 mm (ii) ± 0.3 mm (iii) ± 0.5 mm* (iv) ± 1.0 mm
Last Answer : (iii) ± 0.5 mm*
Description : To take care of differential cooling rail ends of 90 UTS rails are lifted by? (i) 1 mm (ii) 2 mm (iii) 2 to 2.2 mm.* (iv) 1 to 2 mm
Last Answer : (iii) 2 to 2.2 mm.*
Description : How much rail ends are cleaned with Kerosene Oil and steel wire brush? (i) Minimum 100 mm both side (ii) Minimum 50 mm both side.* (iii) No need (iv) As decided by site supervisor
Last Answer : (ii) Minimum 50 mm both side.*
Description : In new Rail as well as second hand rails how much end bends of the rails in vertical are permitted when checked with one meter straight edge before welding? (i) +0.5mm, -0 mm in vertical * (ii) +0.2mm, -.3 mm in vertical (iii) +0.3mm, -2 mm in vertical (iv) 0 mm, +.5 mm in vertical
Last Answer : (i) +0.5mm, -0 mm in vertical *
Description : Minimum permissible vertical wear on nose of a 52 kg CMS crossing on Rajdhani route is i) 6mm ii) 8mm* iii) 10mm iv) 12 mm
Last Answer : ii) 8mm*
Description : 2. Arrange the following fractions in ascending order:(i) \( \frac{3}{8}, \frac{5}{6}, \frac{6}{8}, \frac{2}{4}, \frac{1}{3} \)(ii) \( \frac{4}{6}, \frac{3}{8}, \frac{6}{12}, \frac{5}{16} \)3. Arrange the ... ( \frac{23}{3} \) and 6(iii) \( \frac{18}{20} \) and \( \frac{21}{25} \)(iv) \( 3 \frac{3
Last Answer : 2. Arrange the following fractions in ascending order: (i) \( \frac{3}{8}, \frac{5}{6}, \frac{6}{8}, \frac ... frac{3}{10} \) and \( 2 \frac{7}{15} \)
Description : In cement pressure grouting G.I pipes of diameter …… and ……length, should be fixed in drilled holes a) 12 to 20 mm, 200 mm* b) 12 to 20 mm, 300 mm c) 12 to 25 mm, 500 mm d) 20 to 25 mm, 300 mm
Last Answer : a) 12 to 20 mm, 200 mm*
Description : ormal size of brick used in India is a) 22 x 11.2 x 7 cm* b) 25 x 16 x 8 cm c) 19 x 12 x 9 cm d) 20 x 10 x 5 cm
Last Answer : a) 22 x 11.2 x 7 cm*
Description : An aggregate which passes through 25 mm I.S. sieve and is retained on 20 mm sieve, is said to be flaky if its least dimension is less than (A) 22.5 mm (B) 18.5 mm (C) 16.5 mm (D) 13.5 mm
Last Answer : Answer: Option D
Description : The frequency of a wave travelling at a speed of 500 ms-1 is 25 Hz. Its time period will be ______. (i) 20 s (ii) 0.05 s (iii) 25 s (iv) 0.04 s
Last Answer : (iv) 0.04 s
Description : Distance between the two detonators should be (i) 15 Mt. (ii) 10 Mt.* (iii) 20 Mt (iv) None of the above
Last Answer : (ii) 10 Mt.*
Description : Rails used for A T Welding shall not normally be welded? (i) 20 years old . (ii) 30 years old (iii) 40 years old (iv) 50 years old*
Last Answer : iv) 50 years old*
Description : Painting of weld is done up to (i) 10 CM minimum both side of weld & on welded surface .* (ii) 15 CM minimum both side of weld & on welded surface (iii) 20 CM minimum both side of weld & on welded surface (iv) None of the above
Last Answer : (i) 10 CM minimum both side of weld & on welded surface .*
Description : What is the time of removal the tensor from the newly executed A T Weld? (i) 15 minutes after pouring. (ii) 20 minutes after pouring* (iii) 25 minutes after pouring. (iv) 30 minutes after pouring.
Last Answer : (ii) 20 minutes after pouring*
Description : Normal Reaction time in SPW technique? (i) 17 ± 3 seconds. (ii) 15 ± 3 seconds (iii) 23 ± 3 seconds (iv) 20 ± 3 seconds*
Last Answer : (iv) 20 ± 3 seconds*
Description : After AT Welding First train is to be passed after ? (i) 20 Minutes from pouring of weld metal. (ii) 35 Minutes from pouring of weld metal. (iii) 30 Minutes from pouring of weld metal.* (iv) 25 Minutes from pouring of weld metal.
Last Answer : (iii) 30 Minutes from pouring of weld metal.*
Description : hat action to be taken if slag is not separated within 20 ± 3 seconds? (i) Tap inside. (ii) Tap outside * (iii) Good reaction (iv) Tap well in time
Last Answer : ii) Tap outside *
Description : Torch is kept at height from top surface of rail head? (i) 30 to 55 mm (ii) 35 to 40 mm (iii) 40 to 45 mm
Last Answer : (iii) 40 to 45 mm
Description : In new Rail as well as second hand rails how much end bends of the rails in lateral direction are permitted when checked with one metre straight edge before welding? (i) ± 0.2 mm in lateral direction (ii) ± 0.3 mm in lateral direction (iii) ± 0.5 mm in latera
Last Answer : (iii) ± 0.5 mm in latera
Description : Name the paint used in A.T. Welding painting? (i) Black Paint (ii) Bituminous black IS:9862-1981.* (iii) Any type of black paint (iv) None of the above
Last Answer : (ii) Bituminous black IS:9862-1981.*
Description : Type of competency certificate issued after TW-1 course? (i) Competency for two years (ii) Provisional competency.* (iii) Competency for six months (iv) Competency to do welding independently
Last Answer : (ii) Provisional competency.*
Description : The physical quantity, which oscillates in most waves, is (i) mass (ii) energy (iii) Amplitude* (iv) wavelength
Last Answer : iii) Amplitude*
Description : The amplitude of a wave is ______. (i) the distance the wave moves in one second (ii). the distance the wave moves in one time period of the wave (iii) the maximum distance moved by the medium particles on either side of the mean position* (iv) the distance equal to one wave length
Last Answer : iii) the maximum distance moved by the medium particles on either side of the mean position*
Description : During periodic testing of an AT weld with 700 probe, a bunch of moving signals of less than 40% but more than 10% is observed in the head of weld, the joint will be. (i) Good joint.* (ii) DFWR (iii) DFWO (iv) OBSW
Last Answer : i) Good joint.*
Description : On a branch line one new AT Weld with 00 probe shows a signal of 58 is. (i) DFWO* (ii) DFWR (iii) IMRW (iv) OBSW
Last Answer : i) DFWO*
Description : DFWR weld shall be replaced. (i) Within 2 months of detection. (ii) Within 1 year of detection. (iii) Within 3 months of detection.* (iv) after 3 days of detection.
Last Answer : (iii) Within 3 months of detection.*
Description : Marking of DFWO weld is. (i) Two red point circle on both faces of weld.* (ii) Two red point cross on both faces of weld. (iii) One red point circle on both faces of weld. (iv) None of the above.
Last Answer : i) Two red point circle on both faces of weld.*
Description : Side looking 700 2MHZ probe is tested for detecting. (i) Flaw in head (ii) Flaw in web (iii) Half moon crack in flange.* (iv) For all above.
Last Answer : iii) Half moon crack in flange
Description : For rolling mark 60 kg/Sail/X/2010 the first testing in the field after initial testing of rails in rail manufacturing plant, will be done. (i) After test free period of 25%. (ii) After passage of every 40 ... period.* (iii) After passage of 200 GMT. (iv) On the basis of annual GMT of the section.
Last Answer : (ii) After passage of every 40 GMT traffic during test free period.*
Description : Sensitivity calibration against temp. variation shall be carried out. (i) At least once in month* (ii) quarterly. (iii) at least once in six months (iv) Any of above.
Last Answer : i) At least once in month*
Description : On Rajdhani routes testing frequency of rail testing for rail section of 60kg with annual GMT 80, will be. (i) 4 months (ii) 1 1⁄2 months (iii) 1 months* (iv) None of above.
Last Answer : (iii) 1 months*
Description : The increased gain of 10 dbs for single line & ‘D’ marks rails on double/multiple lines shall be employed for classification of defects. (i) defect in weld (ii) defects in rail. * (iii) for both defects on weld & rail. (iv) None of above.
Last Answer : ii) defects in rail. *
Description : Addition gain of 10 db is used for testing. (i) ‘D’ marked rails on single lines. (ii) ‘D’ marked rails on double lines. (iii) Testing on single line and ‘D’ marked rails on double/multiple lines section.* (iv) None of above.
Last Answer : (iii) Testing on single line and ‘D’ marked rails on double/multiple lines section.*