1 The minimum height above rail level of the lowest portion of any conductor of 11 kV to 66 kV overhead lines crossing (including guard wire) the railway track should be [ a ]
(a) 14.1 m
(b) 14.6 m
(c) 15.4 m
(d) 17.9 m
Answer : (a) 14.1 m
2 The minimum height above rail level of the lowest portion of any conductor of 66 kV to132 kV overheads lines crossing the railway track should be [ b ]
(a) 14.1 m
(b) 14.6 m
(c) 15.4 m
(d) 17.9 m
Answer :(b) 14.6 m
3 The minimum depth of underground cable track crossing (through) pipe should be [ a ]
(a) 1 m
(b) 1.5 m
(c) 2 m
(d) 2.5 m
Answer : (a) 1 m
4 The Electrical Inspector at zonal railway is [ a ]
(a) CEE
(b) Dy. CEE
(c) DRM (Elect.)
(d) CESE.
Answer : (a) CEE
5 The regulations for electrical line crossing on railway track is not applicable to [ d ]
(a) Crossing of railway track laid underground/ inside tube and tunnels
(b) 1500 V DC traction system
(c) 25 kV, 50 Hz traction systems
(d) All of the above
Answer : (d) All of the above
6 In special cases the reduction in specified clearance of electrical crossing on railway track can be permitted by [ a ]
(a) Electrical Inspector
(b) Astt. Electrical Inspector
(c) DRM
(d) ADRM
Answer : (a) Electrical Inspector
7 In view of electrical lines crossing on railway tracks the materials used should comply with Indian Standards specifications but where these are not available, which of the following should be followed [ a ]
(a) British standard specifications
(b) US standard specifications
(c) Russian standard specifications
(d) France standard specifications
Answer : (a) British standard specifications
8 Electrical crossings on railway tracks should be inspected by the owner at a interval not exceeding [ d ]
(a) 3 months
(b) 6 months
(c) 9 months
(d) 12 months
Answer : (d) 12 months
9 If at instance of railways any electrical crossing on railway track is to be shifted or modified the cost will be borne by___ ( shifting not foreseen at the time of agreement) [ b ]
(a) Owner
(b) Railways
(c) Both
(d) Either a or b
Answer : (b) Railways
10 In case of defects and failures in electrical crossing on railway tracks, owner has ro sent a detailed report to all the authorities mentioned in the regulations, within _____ hrs of the first report [ d ]
(a) 12
(b) 24
(c) 36
(d) 48
Answer : (d) 48
11 Angle of overhead electrical line crossing to railway track shall be [ a ]
(a) Right angle
(b) Acute angle
(c) Obtuse angle
(d) Angle does not matter.
Answer : (a) Right angle
12 In special cases the maximum permitted deviation in angle of OH electrical line crossing to railway track shall be [ c ]
(a) 10 deg
(b) 20 deg
(c) 30 deg
(d) 45 deg
Answer : (c) 30 deg
13 The minimum distance of structures (for electrical line crossing) from the centre of nearest railway track shall be equal to the height of the structure in meters plus [ b ]
(a) 3 m
(b) 6 m
(c) 9 m
(d) 12 m
Answer : (b) 6 m
14 The span of the OH electrical line crossing the railway track is restricted to [ c ]
(a) 100 m
(b) 200 m
(c) 300 m
(d) 400 m
Answer : (c) 300 m
15 The minimum height above rail level of the lowest portion of any conductor of 132kV to 220kV overhead lines crossing (including guard wire) the railway track should be [ c ]
(a) 14.1 m
(b) 14.6 m
(c) 15.4 m
(d) 17.9 m
Answer : (c) 15.4 m
16 The minimum height above rail level of the lowest portion of any conductor of 220kV to 400kV overhead lines crossing (including guard wire) the railway track should be [ d ]
(a) 14.1 m
(b) 4.6 m
(c) 15.4 m
(d) 17.9 m
Answer : (d) 17.9 m
17 In special circumstances if the railway crane has to work under the under the overhead electrical line crossing, the minimum clearance between the highest point of the jib and the lowest conductor of the 33 kV lines should be [ a ]
(a) 1.5 m
(b) 2 m
(c) 2.25 m
(d) 2.5 m
Answer : (a) 1.5 m
18 In special circumstances if the railway crane has to work under the under the overhead electrical line crossing, the minimum clearance between the highest point of the jib and the lowest conductor of the 66 kV lines should be [ b ]
(a) 1.5 m
(b) 2 m
(c) 2.25 m
(d) 2.5 m
Answer : (b) 2 m
19 In special circumstances if the railway crane has to work under the under the overhead electrical line crossing, the minimum clearance between the highest point of the jib and the lowest conductor of the 110kV lines should be [ c ]
(a) 1.5 m
(b) 2 m
(c) 2.25 m
(d) 2.5 m
Answer : (c) 2.25 m
20 In special circumstances if the railway crane has to work under the under the overhead electrical line crossing, the minimum clearance between the highest point of the jib and the lowest conductor of the 132kV lines should be [ d ]
(a) 1.5 m
(b) 2 m
(c) 2.25 m
(d) 2.5 m
Answer : (d) 2.5 m
21 In special circumstances if the railway crane has to work under the under the overhead electrical line crossing, the minimum clearance between the highest point of the jib and the lowest conductor of the 220kV lines should be [ c ]
(a) 2.25m
(b) 2.5 m
c) 3.5 m
(d) 6.0 m
Answer : c) 3.5 m
22 In special circumstances if the railway crane has to work under the under the overhead electrical line crossing, the minimum clearance between the highest point of the jib and the lowest conductor of the 400kV lines should be [ d ]
(a) 2.25m
(b) 2.5m
(c) 3.5
(d) 6.0 m
Answer : (d) 6.0 m
23 In sections where tracks are not to be electrified in future,linesupto 11 kV overhead crossing are permitted with clearance between lowest conductor of the line and railway track [ b ]
(a) 9 m
(b) 10.95 m
(c) 11.05 m
(d) 12.1 m
Answer : (b) 10.95 m
24 The factor of safety of each string of insulator used for overhead electrical crossing on railway track should not be less than [ b ]
(a) 1
(b) 2
(c) 3
(d) 4
Answer : (b) 2
25 The minimum height between any guard wire and a live conductor of electrical crossing on railway track shall not be less than [ b ]
(a) 1 m
(b) 1.5 m
(c) 2 m
(d) 2.5 m
Answer : (b) 1.5 m
26 Each structure on either side of the railway track, supporting the span of overhead electrical line crossing should be provided with_____ no. of independent earths [ b ]
(a) 1
(b) 2
(c) 3
(d) 4
Answer : (b) 2
27 The maximum permissible earth resistance on either side of the electrical overhead line crossing (on railway track) is [ c ]
(a) 5 ohm
(b) 8 ohm
(c) 10 ohm
(d) 12 ohm
Answer : (c) 10 ohm
28 The owner of the overhead electric line crossing on railway tracks, is required to inspect and test the earth on hot dry day at an interval of [ d ]
(a) 3 months
(b) 6 months
(c) 9 months
(d) 12 months
Answer : (d) 12 months
29 Which of the following should be displayed on the marker at each end of the underground cable crossing on railway track [ a ]
(a) No. of cables
(b) Size of cable
(c) Make of cables
(d) All of the above
Answer : (a) No. of cables
30 Which of the following data is to be provided by the owner, while proposing for overhead electrical line crossing on railway track [ a ]
(a) Temperature data provided
(b) Name of supervisor from owner’s side
(c) Life of crossing
(d) None of the above.
Answer : (a) Temperature data provided
31 The final authority to grant the approval for proposed electrical line crossing on railway track [ b ]
(a) Electrical Inspector
(b) DRM
(c) DRM (Elect.)
(d) ADRM
Answer : (b) DRM
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