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

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
by

1 Answer

Answer :

ii) 5.7*
by

Related questions

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.

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Description : 65- Grade of 72 UTS rail is? (i) 880 (ii) 1080 (iii) 710* (iv) None of above

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Description : Grade of 110 UTS rail is? (i) 880 (ii) 1080* (iii) 710 (iv) None of above

Last Answer : (ii) 1080*

Grade of 90 UTS rail is? (i) 880* (ii) 1080 (iii) 710 (iv) None of above

Description : Grade of 90 UTS rail is? (i) 880* (ii) 1080 (iii) 710 (iv) None of above

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Description : Which gauge is used to measure the height of rail at the time of aligning of rails for AT welding? (i) Height gauge.* (ii) Vertical gauge (iii) Horizontal gauge (iv) As decided by site supervisor

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Last Answer : (i) Golden

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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*

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*

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*

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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

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Description : Pressure of Oxygen during pre-heating shall be? (i) 4.0 – 5.0 kg/ sq cm (ii) 5.0 – 6.0 kg/ sq cm (iii) 6.0 – 7.0 kg/ sq cm (iv) 7.0 – 8.0 kg/ sq cm *

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The gap between probing face and probing shoe should be. (i) 0.4 mm (ii) 0.2mm * (iii) 3mm (iv) 1mm.

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 *

What is the dia of thimble ? (i) 14-16 mm (ii) 16-18 mm* (iii) 18-20 mm (iv) None of the above

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*

Thickness of Lining/Charge is kept? (i) 20 mm. (ii) 25 mm* (iii) 30 mm (iv) As decided by the site supervisor

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*

Height of crucible is kept from top surface of mould? (i) 30 mm (ii) 40 mm (iii) 50 mm* (iv) 60 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*

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

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

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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*

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*

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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

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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.

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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

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

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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

What is the Shelf life of mould ? (i) 6 months minimum. (ii) 8 months minimum (iii) 9 months minimum* (iv) 12 months minimum

Description : What is the Shelf life of mould ? (i) 6 months minimum. (ii) 8 months minimum (iii) 9 months minimum* (iv) 12 months minimum

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nternal diameter of thimble in conventional type of crucible is? (i) 14-16 mm (i) 16-18 mm (iii) 18-20 mm* (iv) 20-22 mm

Description : nternal diameter of thimble in conventional type of crucible is? (i) 14-16 mm (i) 16-18 mm (iii) 18-20 mm* (iv) 20-22 mm

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Description : Permissible wear of web & foot of rail due to corrosion is:- (a) 15 mm. (b) 1.5 mm.* (c) 0.5 mm. (d) 2.5 mm.

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Description : Service life of CMS crossing ( 52 Kg rail) is:- (a) 400 GMT. (b) 300 GMT. (c) 200 GMT. (d) 150 GMT.*

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Description : Service life of improved SEJ of 60 Kg rail is:- (a) 400 GMT. (b) 300 GMT. (c) 200 GMT.* (d) 150 GMT.

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Description : Service life of Glued insulated rail joint of 60 Kg rail is:- (a) 300 GMT. (b) 200 GMT.* (c) 400 GMT. (d) 150 GMT.

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Description : Height of platform of a flag station in cutting above rail level is (a) Same height as Rail level (b) 305 mm above rail level (c) 455 mm above rail level (d) 840mm above rail level*

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Description : The level of guard rail in bridges shall not be lower than that of running rail by more than a) 25 mm* b) 55 mm c) 75 mm d) 65 mm

Last Answer : a) 25 mm*

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Description : The horizontal clearance between guard rail and running rail in BG track is a) 25 mm b) 250 ± 50 mm* c) 75 mm d) 200 ± 50 mm

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