Q Bank & Answer - Electrical Engineer -TL coach wiring

01. Capacity of rotary switches provided in rotary junction box is [ a ]

a)40A 

b)16A 

c)10A 

d)15A

Answer - a)40A 

02. Capacity of limit switch provided for alarm chain pulling indication light circuit [ a ]

 a) 10A 

b)15A 

c)35A 

d)40A

Answer -  a) 10A 

03. Size of rewirable fuse recommended for individual fan in 110V TL system is [ a ]

 a)35 SWG R/W 

b) 29 SWG R/W 

c)20 SWG R/W 

d) 22 SWG R/W

Answer -  a)35 SWG R/W 

04. Positive and negative cable in roof runs through on either side of coach to avoid [ c ]

 a) earth leakage 

b) over load 

c) short circuits 

d) none

Answer - c) short circuits 

05. Essential lights in SG TL coaches other than First class consists of [ a ]

 a) Lavatory lights, door way lights and Night lights and 50% of compartment lights

b) Lavatory lights

c) Lavatory and door lights

d) Lavatory, door lights and Night lights

Answer -  a) Lavatory lights, door way lights and Night lights and 50% of compartment lights

06. The wattage of TL Fan [ a ]

a) 32W 

b)10W 

c)80W 

d)60W

Answer - a) 32W 

07. The capacity of battery fuse for 110Volt SG TL coach is [ a ]

a) 40A HRC 

b) 16A HRC 

c) 10 A HRC 

d)4 A HRC

Answer - a) 40A HRC 

08. FRP tray shall be provided at the bottom of the battery box to avoid [ d ]

a) Corrosion of the battery box from splitting of acid

b) Electrical insulation for battery and battery box

c) Vibration of batteries

d) all of the above

Answer -  d) all of the above

09. The minimum clearance between the top of the battery and battery box for  maintenance of cells shall have [ b ]

a)50mm 

b)150mm 

c)100mm 

d)none

Answer - b)150mm 

10. The size of the Fan provided on SGBG coaches of 110V system [ a ]

a)400mm sweep 

b)300 mm sweep 

c)225 mm sweep 

d)200 mm sweep

Answer -  a)400mm sweep 

11. The total number of V belts provided to the drive TL alternator 4.5KW are [ a ]

a) 4 

b)6 

c)2 

d)3

Answer - a) 4 

12. The train lighting wiring is [ b ]

a) two wire earthed system 

b) two wire unearthed system

c) one wire earthed system 

d)none of the above 

Answer - b) two wire unearthed system

13. The insulation resistance of 110V coach when measured with 500V Megger during healthy weather condition [ a ]

a) 2mega ohms 

b) 1 mega ohms

c)3 mega ohms 

d)0.5 mega ohms

Answer - a) 2mega ohms 

14. The insulation resistance of 110V coach when measured with 500V Megger during adverse weather condition [ b ]

a) 2mega ohms 

b) 1 mega ohms 

c)3 mega ohms 

d)none

Answer - b) 1 mega ohms 

15. Electrical fires on coach is mainly due to [ d ]

a) loose connections 

b)short circuits and earth faults

c) undersize cables 

d) all of the above

Answer - d) all of the above

16. The earth leakage can be checked both positive and negative cables at a time by [a ]

a) double test lamp method 

b) 500V megger

c) single test lamp 

d)none of the above

Answer -  a) double test lamp method 

17. Double test lamps are connected in [ a ]

a)series 

b) parallel 

c) both a&

b d)none

Answer -  a) series 

18. When double test lamp is connected to EFTB, red lead connected lamp glows and blue lead lamp does not glow then coach is [ c ]

a) healthy 

b)having positive earth 

c)having negative earth 

d) none

Answer - c) having negative earth 

19. When double test lamp is connected to EFTB, red lead lamp does not glows and blue lead lamp glows then coach is [ b ]

a) healthy 

b)having positive earth 

c)having negative earth 

d) both B&C

Answer -  b)having positive earth 

 20. The insulation resistance of coach is to be measured with [ a ]

a ) megger 

b)ohm meter 

c)continuity meter 

d)none

Answer - a ) megger 

21. The instrument used to measure the current without disturbing the circuit is [ a ]

a) tong tester

 b) tacho meter 

c) photo meter 

d)none

Answer - a) tong tester

22. Voltmeter is to be connected to the circuit in [ a ]

a)parallel 

b)series 

c)series and parallel 

d)none

Answer - a)parallel 

23. Ammeter is to be connected to the circuit in [ b ]

a)parallel 

b)series 

c)series and parallel 

d)none

Answer - b)series 

24. While measuring the earth leakages by double test lamp, lamps should have [ a ]

a) same wattage 

b) different wattage 

c)any wattage 

d)none

Answer - a) same wattage 

25. While giving supply to adjacent coaches through EFT the supply polarities are to be maintained [ a]

a)same polarity 

b)opposite polarity 

c)any polarity 

d)none

Answer - a)same polarity 

26. No generation of TL alternator is due to [ d ]

a) alternator Field/AC wire defective 

b) no residual magnetism

c) rectifier /regulator box defective

 d)any of the above

Answer -  d)any of the above

27. Cables used for wiring in coaches should have [ a ]

a) minimum joints 

b)five joints 

c)maximum joints 

d)none

Answer -  a) minimum joints 

28. The level of illumination will be measured by [ c ]

a)photo meter 

b)lux meter 

c)both A&B 

d)none

Answer - c)both A&B 

29. The percentage of spare coaches should be available in TL maintenance depot on traffic account is[ b ]

a) 10

 b) 5 

c) 6 

d) none

Answer -  b) 5 

30. The percentage of spare coaches should be available in AC maintenance depot on traffic account is [ c ]

a) 12 

b) 5 

c) 6 

d)none

Answer - c) 6