1. An electrolyte use in train lighting cell is the mixture of [ c ]
a) Sulphuric acid and tap water
b) Sulphuric acid and mineral water
c) Sulphuric acid and demineralized/distilled water
d) None of the above
Answer - c) Sulphuric acid and demineralized/distilled water
a) Lead peroxide
b) Spongy lead
c) Lead sulphate
d) None
Answer - a) Lead peroxide
a) Lead peroxide
b) Spongy lead
c) Lead sulphate
d) None
Answer - b) Spongy lead
4. The capacity of cell is measured in [ a ]
a) Ampere hour
b) Watt hour
c) Amperes
d) Watts
Answer - a) Ampere hour
a) Size of plates
b) Distance between the plates
c) Nature of electrolyte
d) All the above
Answer - d) All the above
6. Trickle charging of storage battery help to [ a ]
a) Compensate for internal losses
b) Maintains proper electrolyte
c) Increase its capacity
d) None
Answer - a) Compensate for internal losses
7. The capacity of Battery used in 110V T.L system [ a ]
a) 120AH
b) 210Ah
c) 320Ah
d) 90AH
Answer - a) 120AH
8. SPGR of fully charged cell [ a ]
a) 1.220
b) 1.180
c) 1.140
d) 1.100
Answer - a) 1.220
9. SPGR of half charged cell [ a ]
a) 1.210
b) 1.175
c) 1.100
d) 1.140
Answer - a) 1.210
a) 1.210
b) 1.175
c) 1.200
d) 1.140
Answer - d) 1.140
a) 54
b) 56
c) 24
d) 18
Answer - a) 54
a) Cells kept under discharged condition
b) Cells kept under not fully charged condition
c) Cells over charged
d) All the above
Answer - d) All the above
13. The codal life of lead acid TL/AC cells is [ a ]
a) 4
b) 3
c) 2
d) None
Answer - a) 4
14. The capacity of batteries used for RMPU AC coaches is [ d ]
a) 525 AH
b) 400 AH
c) 800 AH
d) 1100 AH
Answer - d) 1100 AH
15. VRLA Batteries works on [ a ]
a) Oxygen recombination principle
b) Hydrogen recombination principle
c) Hydrogen-oxygen recombination principle
d) None of the above
Answer - a) Oxygen recombination principle
16. The VRLA cells can be mounted in aposition. [ d ]
a) Horizontal
b) Vertical
c) Slanting
d) Both a & B
Answer - d) Both a & B
18. Conductivity is the ability of a solution to conduct electrical current commonly expressed in [ c ]
a) Amperes
b) Watt
c) Micro mhos/cm
d) None
Answer - c) Micro mhos/cm
19. Conductivity of DM water is measured by
a) Conductivity meter
b) Universal solution
c) pH meter
d) all of the above
Answer -c) pH meter
20. Acceptable quality of treated water conductivity is in micro mhos/cm [ ]
a) <10
b) <30
c) 40
d) None
Answer -
21. Acceptable quality of treated water PH value will be [ ]
a) 6.8 to 7.2
b) 7.5 to 8.5
c) 8.5 to 10
d) None
Answer -
22. VRLA Batteries means [ a ]
a) Valve regulated lead acid batteries
b) Voltage regulated lead acid batteries
c) Both a & b
d) None
Answer - a) Valve regulated lead acid batteries
23. SMF Batteries stands for [ a ]
a) Sealed maintenance free batteries
b) Self maintenance free batteries
c) a&b
d) None
Answer - a) Sealed maintenance free batteries
24. Frequent topping up of distilled water in VRLA cells [ b ]
a) Required
b) Not required
c) Sometimes required
d) None
Answer - b) Not required
25. Self discharge of VRLA Battery _________ percentage of capacity for week [ a ]
a) 0.5% to 1%
b) 2%
c) 3%
d) 4%
Answer - a) 0.5% to 1%
26. VRLA Battery seperaters can be of [ c ]
a) The gelled electrolyte type
b) The absorbed electrolyte type
c) a & b
d) None of the above
Answer - c) a & b
27. For VRLA Battery, every 1 degree C in temperature, the charge/float voltage is to be reduced by
______ per cell [ a ]
a) 3mv
b) 5 mv
c) 1 mv
d) 6 mv
Answer - a) 3mv
28. Codal life of VRLA battery is [ a ]
a) 4 years
b) 5 years
c) 3 years
d) 7 years
Answer - a) 4 years
29. Charging voltage/ Current ripple factor for VRLA batteries should less than [ b ]
a) less than 5 %
b) less than 2 %
c) less than 15 %
d) none
Answer - b) less than 2 %
30. The containers and covers of VRLA batteries are made up of [ a ]
a) PPCP Poly (Propylene co-polymer)
b) Hard rubber
c) PVC
d) None
Answer -a) PPCP Poly (Propylene co-polymer)
a) Lead acid battery
b) Nickle iron battery
c) Nickle cadmium battery
d) All the above
Answer - a) Lead acid battery
32. The specific gravity of the concentrated sulphuric acid is [ a ]
a) 1.840
b) 1.200
c) 1.220
d) 1.180
Answer -a) 1.840
33. The specific gravity of the electrolyte used in TL cellsis [ b ]
a) 1.800
b) 1.200
c) 1.100
d) 1.180
Answer b) 1.200
34. The positive plate of lead acid is made of [ a ]
a) Lead peroxide
b) Spongy lead
c) Lead sulphate
d) None
Answer ; a) Lead peroxide
35. The secondary cell [ a ]
a) Once discharged it can be charged
b) Once discharged it cannot be charged
c) Once discharged it had to throw away
d) None
Answer ; a) Once discharged it can be charged
36. When fully charged lead acid cell is discharged, the positive and negative plates becomes [ c ]
a) Lead peroxide
b) Spongy lead
c) Lead sulphate
d) None
Answer ; c) Lead sulphate
37. When the lead acid cell is recharged the specific gravity of the electrolyte [ a ]
a) Increases
b) Decreases
c) As it is
d) None
Answer ; a) Increases
38. Battery capacity depends upon [ d ]
a) Size and no. of plates
b) Quantity of active material present
c) Quantity of electrolyte
d) All the above
Answer ; d) All the above
39. The capacity of battery is expressed in terms of [ b ]
a) Current rating
b) AH rating
c) Voltage rating
d) VH rating
Answer ; b) AH rating
40. The number of positive plates in a secondary cell is always less than the negative plates by [ a ]
a) 1
b) 2
c) 3
d) None
Answer ; a) 1
41. Normal charge of battery is [ a ]
a) 1/10th of the rated capacity of the battery
b) 1/20th of the rated capacity of the battery
c) 1/5th of the rated capacity of the battery
d) 1/30th of the rated capacity of the battery
Answer ; a) 1/10th of the rated capacity of the battery
42. Initial charge of the battery is [ c ]
a) 1/10th of the rated capacity of the battery
b) 1/20th of the rated capacity of the battery
c) 1/30th of the rated capacity of the battery
d) 1/5th of the rated capacity of the battery
Answer ; c) 1/30th of the rated capacity of the battery
43. Batteries are provided in Train coach to provide [ a ]
a) Amenities to public such as lights and fans
b) Separate excitation of alternator field
c) Self excitation of alternator field
d) None of the above
Answer ; a) Amenities to public such as lights and fans
a) 120 AH
b) 210 AH
c) 320 AH
d) 90 Ah
Answer ; a) 120 AH
45. Number of mono block batteries used in 110 V TL systems [ a ]
a) 18
b) 12
c) 24
d) 9
Answer ; a) 18
a) Higher temperature of electrolyte
b) Corrosion of plates
c) Oxidation of the seperators and loss of water
d) All the above
Answer ; d) All the above
47. Undercharging results in [ d ]
a) Irreversible Sulphation
b) Reversal of cells
c) Loss of the capacity
d) All the above
Answer ; d) All the above
48. Reverse polarity is mainly due to [ a ]
a) Deep discharge
b) RR Unit setting is high
c) Battery kept in fully charged condition
d) None
Answer ; a) Deep discharge
49. Excessive gassing and high spgr. [ a ]
a) Alternator/regulator setting high
b) Alternator/regulator setting low
c) Lack of electrolyte
d) None
Answer ; a) Alternator/regulator setting high
50. Hydrometer used in TL system is [ a ]
a) Syringe type hydro meter
b) Suction hydrometer
c) Both a and b
d) None of the above
Answer ; a) Syringe type hydro meter
51. If water consumption in particular cell is more due to [ d ]
a) Hermitically sealed joint leak
b) Higher charging current
c) Leakage of electrolyte due to cracks in container
d) All of the above
Answer ; d) All of the above
a) 0.1XC10 capacity
b) 0.2XC10 Capacity
c) 0.05XC10 Capacity
d) 0.033XC10 capacity
Answer ; c) 0.05XC10 Capacity
53. TL 110 V TL coaches are provided with following batteries [ a ]
a) Mono block batteries
b) Individual cells
c) Both a & b
d) None
Answer ; a) Mono block batteries
54. Conductivity of DM water is measured by [ a ]
a) Conductivity meter
b) Universal Solution
c) PH meter
d) All of the above
Answer ; a) Conductivity meter
55. Best quality of treated water conductivity is in micro mhos/cm [ a ]
a) <10
b) <35
c) <40
d) None
Answer ; a) <10
a) 6.8 to 7.2
b) 7.5 to 8.5
c) 8.5 to 10
d) None
Answer ; a) 6.8 to 7.2
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