Track maintenance & track machines — questions with answers

Q1.To assess ballast needed for deep screening, the section is screened to full depth over 2-3 sleepers at intervals of ______.

1. 100 to 200 m
2. 0.5 to 1 km
3. 2 to 3 km
4. 5 km

Q2.Which statement about tamping machines is correct?

1. They can lower track up to 25 mm
2. They cannot correct alignment
3. They cannot lower the track
4. They do not measure track geometry

Q3.The desirable gap between top edge of the tamping blade and bottom edge of PSC / flat bottom sleeper is ___________________________

1. 10- 12 mm
2. 15-20 mm
3. 20 -22 mm
4. 22-25 mm

Q4.Shoulder ballast screening, done as preventive maintenance, is carried out once in ______.

1. 3 years
2. 1 year
3. 5 years
4. 10 years

Q5.Compared with UNIMAT 2S, the UNIMAT 3S has ______.

1. Two tamping units per rail
2. An extra lifting hook for the third rail
3. A ballast cleaning unit
4. A dynamic stabiliser

Q6.Net ballast quantities assessed for maintenance are enhanced by about ______ to arrive at gross procurement quantities when measured in stacks or wagons at origin.

1. 8%
2. 2%
3. 15%
4. 25%

Q7.Which of the following machine is point tamping machine.

1. VDM-800
2. PTV-800
3. Unimat 08-275
4. DGS -62 –N

Q8.The test pieces 1m length (500mm + 500mm) for metallurgical examination are to be sent only for rail failures which occur

1. within first 25% of service life subject to maximum of 10 years of rolling
2. In case of repetitive failures of rails of same rolling mark
3. The rail where rail/ weld failure is prima facie cause of train accident
4. All the above

Q9.Approximately how long does UNIMAT 08-475 4S take to tamp one 1 in 12 turnout?

1. 90-100 minutes
2. 30-40 minutes
3. 3-4 hours
4. 15-20 minutes

Q10.The annual machine deployment program for track renewal, rail grinding and deep screening shall be issued by ______________

1. PCE
2. CTE
3. Sr. DEN Co.
4. CE/TM

Q11.Deep screening by BCM results in __________________

1. Improving the Drainage of track
2. Improvement of track resilience
3. Improvement of elasticity of ballast bed
4. All the above

Q12.The squeezing pressure recommended for tamping PSC sleepers is ______.

1. 90 bar
2. 100 bar
3. 130 bar
4. 110 bar

Q13.Tamping depth to be set on the machine for PSC sleepers with 60 kg rails (sleeper 210 mm, rail 172 mm, liner 5 mm) is ______.

1. 382 mm
2. 387 mm
3. 355 mm
4. 392 mm

Q14.At the beginning of the gang beat ___no. of rails sample track should be maintained

1. 1
2. 2
3. 3
4. 4

Q15.After a turnout is laid by T-28, how many rounds of UNIMAT tamping are to be done after ballasting before normalising speed?

1. 1
2. 2
3. 5
4. 3

Q16.Which of the following is NOT a basic unit of a Ballast Cleaning Machine?

1. Excavating unit
2. Screening unit
3. Track lifting and slewing device
4. Tamping unit

Q17.For correcting the longitudinal profile, on straight track on double line, the datum rail selected is ______________________________________

1. Inner rail
2. Outer rail
3. less disturbed rail
4. Cess side rail

Q18.JE/P.Way shall inspect all side drains, catch water drains and bridge waterways at least once a year in the month of ______.

1. June
2. September
3. April
4. December

Q19.Auxiliary track of _______ mm gauge should be laid to run portal cranes in TLE

1. 1676
2. 3400
3. 4265
4. 5300

Q20.The Shoulder Ballast Cleaning Machine (FRM-80/KSC-600) is provided with ______.

1. One cutter chain under the sleepers
2. Two excavating cutter chains, one on each side
3. Four tamping units
4. A single broom at the rear

Q21.Maximum centre to centre sleeper spacing on steel girder except at cross girder in open web girders bridges should be ______________

1. 450mm
2. 500mm
3. 600mm
4. 700mm

Q22.The Dynamic Track Stabiliser works by ______.

1. Horizontal oscillation of the track with a static vertical load
2. Vertical vibration with tamping tines
3. Lifting and dropping the track
4. Compressing shoulder ballast only

Q23.For mechanised maintenance, the clean ballast cushion under the rail seat of PSC sleepers shall at no time be less than ______.

1. 100 mm
2. 200 mm
3. 250 mm
4. 150 mm

Q24.Thickness of painting on rails is measured with ____________

1. Anemometer
2. Tachometer
3. Pyrometer
4. Elco meter

Q25.As a maintenance practice side drains, catch water drains and bridges to be cleaned in ____________________

1. Pre Monsoon attention
2. During Monsoon attention
3. Post Monsoon attention
4. Any of the above

Q26.As per the Railway Board's revised norms of 2021, deep screening of plain track on the main line with sectional speed of 130 kmph and above is due when the clean ballast cushion is less than ______.

1. 150 mm
2. 200 mm
3. 250 mm
4. 300 mm

Q27.After grinding, __________ should be cleaned from __________ joints.

1. Grind dust, glued
2. Grease, glued
3. Grind dust, FP
4. All the above

Q28.Tamping tools vibrate at a frequency of about ______, at which ballast behaves like a fluid.

1. 35 Hz
2. 45 Hz
3. 20 Hz
4. 50 Hz

Q29.A major advantage of dynamic track stabilisation is ______.

1. Lowering of track by 50 mm
2. Elimination of tamping
3. Increased lateral resistance of track
4. Cleaning of ballast

Q30.Deep screening of a PSC turnout by RM-80-92U requires a traffic block of about ______.

1. 5 hours
2. 2 hours
3. 3.5 hours
4. 8 hours

Q31.The maximum load capacity of each portal crane of the T-28 turnout renewal machine is ______.

1. 25 tonnes
2. 30 tonnes
3. 20 tonnes
4. 40 tonnes

Q32.The maximum vertical load applied by the hydraulic cylinders of DTS model DGS-62N is about ______.

1. 110 kN
2. 45 kN
3. 600 kN
4. 356 kN

Q33.A limitation of the T-28 portal crane is that with load it ______.

1. Can travel on crawlers only
2. Can travel on rail wheels only
3. Cannot be moved at all
4. Needs a power block