Top 50 Questions of Electric Locomotive/Conventional Loco/three phase loco/Quiz

Overcharging cycle of BP (5.4kg/Cm2) in WAG9 Loco is for what time ?
280 Seconds
180 Seconds
120 Second
160 Second
2. Axle load of WAG9 Loco is ?
19.8 T
20.5T
18.8T
22.0T
3. In DC series TM, Starting Torque will be
Square of Armature current.
Proportional to Armature current.
Proportional of Field current
None of these
4. Type of Bogie used in WAG-7 Loco is ?
Cast Steel Bogie
Fabricated
Fully suspended
None of these
5. Earth fault relay QOP-2 pick up at
50Volt
50Amp
5Volt
5Amp
6. Gear ratio of WAP-7 Loco is ?
21:107
21:58
20:72
15:77
7. RPS is connected
in series of TM field winding
in parallel of TM field winding
in series of TM armature winding
In parallel of TM armature winding
8. QLM setting of WAG-7 Loco is ?
6Amp
9Amp
6.5Amp
None
9. In WAG9 Loco maximum braking pressure to brake cylinder by A9?
3.5Kg/Cm2
2.5Kg/Cm2
3.0Kg/Cm2
4.0Kg/Cm2
10. How many Pantographs are installed in both units of WAG12 Loco?
2 Nos.
4 Nos.
3 Nos
None
11. In DC series TM, when speed is high then Torque will be
Low
High
Can't say
None
12. Rating of Transformer used in WAP-9with hotel load is ?
6531KVA
5670KVA
7475KVA
4170KVA
13. Rating of Megger used to measure IR of Loco TFP 25KV primary winding is ?
1KV
2KV
2.5KV
500V
14. Which type Bogie is used in WAG7 Loco ?
Co-Co
Bo-Bo
High Adhesion
Cast
15. In WAG9 Loco BP is over-charged up to
2.5Kg/Cm2
4.0 Kg/Cm2
5.0Kg/Cm2
5.4Kg/Cm2
16. Auxiliary winding KV rating of three phase Loco is?
1000V
333V
500V
750V
17. Setting of maximum current relay in three phase Loco WAP7 is ?
5.0Amp
6.0 Amp
3.3Amp
3.5Amp
18. In WAG7 which relay is used for auto regression of Notches?
Q51
Q52
Q50
Q30
19. QLM relay is a ?
Current Relay
Voltage Relay
Pressure Relay
Impedance Relay
20. When one wheel of conventional loco slipping due to rains then which relay will act for sanding ?
Q20
QD
Q48
Q44
21. Range of frequency of Drive Convertor is in WAG-9 Loco is ?
80-160 Hz
65-132 Hz
65-130 Hz
80-140 Hz
22. In WAG9 Loco second letter shows?
Type of Traction
Series of Electric Loco
Gauge of Electric Loco
Type of Services
23. DC link voltage of WAG-9 Loco is ?
1800V DC
1800V AC
2800V AC
2800 V DC
24. Additional C2 Relay valve of conventional loco used to
Control BP
Control MR
Control FP
None
25. IGBT is a ?
Current controlled device
Voltage controlled device
Power controlled device
None
26. Diameter of condemned wheel in conventional electric loco is less than?
1092mm
1097mm
1016mm
1025mm
27. Tan Delta Test is done to ensure ?
Resistance
Insulation Resistance
Capacitance
Inductance
28. QD-2 is provided between TMs
1&2
2&3
3&4
4&5
29. In Arno convertor W-Phase winding has how much more turns compared to other phase U and V winding ?
30%
20%
10%
25%
30. In Three phase Electric loco when maximum rated voltage to TM is over then high speed running can be achieved by
Increasing frequency proportionately
By increasing frequency in square
By decreasing rotor current in square
Decreasing rotor current proportionately
31. Class of Insulation used in Auxiliary machines of conventional loco is
H- Class
C-Class
F-Class
B-Class
32. Rated Maximum voltage of TM used in WAP-7 Loco is ?
2180V
2000V
750V
890V
33. Value of RHOBA in WAG7 Loco is ?
200 Ohm
180 Ohm
210 Ohm
175 Ohm
34. Twin beam Head light works on
110V DC
230V AC
24V AC
24V DC
35. Crawbar protection in three phase loco is used to control ?
Input voltage of PWM Convertor
Output voltage of VVVF Invertor
Input voltage of VVVF Invertor
None
36. Value of RPGR in Conventional Loco is ?
100K-ohm
200K-ohm
300K-ohm
50K-ohm
37. During the regenerative braking when OHE is non- recieptive then generated energy ?
goes to OHE
wasted in resistance.
consumed by TM
consumed by DC Link
38. Which type bearings are used in Axle Box of wheel sets?
Ball Bearings
Cylindrical Roller Bearing
Tapered Roller Bearing
Spherical Roller Bearing
39. Rating of SI Unit is used in conventional loco ?
180V
180KVA
180Amp
150V
40. If Harmonic filter by passed during the running of Loco then ?
Speed will reduce to 40Kmph
Speed will reduce to 50Kmph
Speed will reduced to 30Kmph
Speed will reduced to 25Kmph
41. No of teeths in the gear of WAP-9 Loco are ?
58
72
65
107
42. Which liquid is used for cooling of IGBT convertor
Water
Water +Glycol
Glycol
43. Filter winding KVA Rating of WAG9 ?
250
400
600
300
44. Road Guage of WAG7 Loco is ?
1596+3/-1mm
1096mm
1096+/-3mm
1097mm
45. QCON relay is provided for ?
Output voltage of SI
Output voltage of Arno
46. In three phase Loco Air gap flux maintained constant by which method ?
None
47. In 3Phase Loco Series resonant circuit installed with DC link to supress ?
5th Harmonic
7th Harmonic
48. Tap changer run time for all 32 Notches is ?
10-12 Second
10-25 Second
8-12 Second
11-13 Second
49. How many total Battaries are used in WAP7 Loco
26 Nos
24 Nos
20 Nos
13 Nos

[@korupolu70raghavamma81]

absolute beautiful

[@PremSingh-lt4bi]

Sandingh relay Q48

[@user-uh2ov4ot2w]

अच्छा है but आवाज कम है

[@mahendrasinghgurjar7065]

🙏🙏 very very good explain sir

[@mohangoyal9909]

Sir plz share pdf if possible

[@educationwithkk5255]

Sir question ka pdf send kr digiye hme plz

[@educationwithkk5255]

In question ka pdf bhi description me de digiye sir

[@diwakarkuteriyar3786]

Very nice video sir 🙏🙏🙏🙏

[@ombirsaini9421]

47ans wrong hai 3.5hai

[@roast123]

with A9 hai . yani propotional braking not direct SA 9 se

[@sureshkumarmarripudi3256]

Bp over charging time 180 sec sir