Question Answer
1. Rating of EMU transformer is
(a) 1200KVA (b) 1000KVA (c) 800 KVA (d) 1100KVA
Ans.. (b)
2. Voltage rating of EMU Traction Motor is
(a) 500 V (b) 580 V (c) 535 V (d) 550 V
Ans.. (c)
3. New wheel diameter of EMU Motor Coach/Trailer coach
(a) 900 mm (b) 950 mm (c) 850 mm (d) 952 mm
Ans.. (d)
4. Total auxiliary motors in EMU motor coach are
(a) 5 (b) 4 (c) 3 (d) 2
Ans.. (a)
5. Total No. of traction motors in a EMU Motor Coach is
(a) 2 (b) 3 (c) 4 (d) 5
Ans... (c)
6. The Safety device provided in EMU for detecting gassing and the protection of
Transformer is:
(a) OLP (b) TTR (c) BUD (d) PRV
Ans... (c)
7. The Safety device fitted in the EMU Transformer for its protection
against explosion:
(a) PRV (b) OLP (c) BUD (d) TTR
Ans.. (a)
8. The Ampere hour capacity of EMU battery is :
(a) 80 Ah (b) 90 Ah (c) 100 Ah (d) 75 Ah
Ans.. (b)
9. In EMU, the setting of Parking brake governor cut in/cut out is :
(a) 6.0/7.0kg/cm
(b) 3.3/4.3 kg/cm2
(c) 2.6/3.2kg/cm2
(d) 4.0/5.0kg/cm2
Ans..(c)
10. In EMU the setting of MCP Governor cut in /cut out is :
(a) 5.0/6.0 kg/cm2
(b) 7.0/8.0 kg/cm2
(c) 4.5/5.5 kg/cm2
(d) 6.0/7.0kg/cm2
10. Ans.. (d)
11. In EMU one of the following is a part of brake controller :
(a) Tripple valve
(b) Equalising discharge valve
(c) Safety valve
(d) Application magnet valve
11. Ans.. (b)
12. In EMU one of the following is a part of EP unit :
(a) Tripple valve
(b) Equalising discharge valve
(c) Puppet valve
(d) Self lapping cylinder
12.Ans.(a)
13. In EMU the setting of equipment governor cut in/cut out is
(a) 4.5/5.5 kg/cm2
(b) 2.2/3.8 kg/cm2
(c) 4.2/3.3 kg/cm2
(d) 4.4/5.2 kg/cm2
13 Ans... (c)
14. In EMU the setting of control governor cut in/cut out is
(a) 5.5/4.3 kg/cm2
(b) 3.3/4.2 kg/cm2
(c) 3.2/4.8 kg/cm2
(d) 5.5/6.5 kg/cm2
14.Ans.. (b)
15. In EMU the BC Pressure for MC is :
(a) 2.0 kg/cm2
(b) 1.6 kg/cm2
(c) 3.5 kg/cm2
(d) 1.5 kg/cm2
15.Ans.. (b)
16. In EMU the BC Pressure for TC is :
(a) 2.0 kg/cm2
(b) 1.6 kg/cm2
(c) 1.2 kg/cm2
(d) 1.5 kg/cm2
16. Ans..(c)
17. In EMU the MR Pressure is :
(a) 5.0 kg/cm2
(b) 6.0 kg/cm2
(c) 7.0 kg/cm2
(d) 8.0 kg/cm2
17. Ans..(c)
18. The type of Traction Motor used in EMU is :
(a) 4001 BX
(b) 4601 BX
(c) 6040 BX
(d) None of the above
18.Ans.. (b)
19. The wheel diameter condemn limit for MC is :
(a) 952 mm (b) 900 mm (c) 877 mm (d) 857 mm
19.Ans (c)
20. The wheel diameter condemn limit for TC is :
(a) 952 mm (b) 900 mm (c) 877 mm (d) 857 mm
20.Ans.. (d)
21. The width of EMU coach is :
(a) 3250 mm (b) 3600 mm (c) 3650 mm (d) 3660 mm
21.Ans.. (d)
22. The No of teeth in EMU traction motor pinion is :
(a) 19 (b) 20 (c) 55 (d) 91
22.Ans.. (b)
23. The gear ratio in EMU is ;
(a) 1 : 4 (b) 1 : 5 (c) 1 : 4.55 (d) 1 : 5.55
23.Ans..(c)
24. The type of EMU pantograph is ;
(a) AM-10 (b) AM-12 (c) AM-14 (d) None of the above
24. Ans..(b)
25. The type of strip used in EMU pantograph is ;
(a) Metalised corbon
(b) Carbon
(c) Mild steel
(d) None of the above
25.Ans..(a)
26. The pantograph strip thickness condemn limit is ;
(a) 2.5 mm (b) 3.5 mm (c) 4.5 mm (d) None of these
26. Ans..(b)
27. The control voltage in EMU is ;
(a) 110 V AC (b) 230 V AC (c) 110 V DC (d) 230 V DC
27.Ans.. (c)
28. The rating of EMU traction motor is :
(a) 150 KW (b) 535 KW (c) 230 KW (d) 167 KW
28.Ans.. (d)
29. The rating of EMU Transformer is :
(a) 1000 KVA (b) 535 KVA (c) 25 KVA (d) 50 KVA
29.Ans.. (a)
30. The type of cooling of transformer oil is :
(a) OFAF (b) OF (c) AF (d) None of these
30.Ans.. (a)
31. The voltage of primary winding of EMU transformer is :
(a) 25 KV (b) 266 V (c) 782 V (d) None of these
31. Ans..(a)
32. The voltage of Secondary winding of EMU transformer is :
(a) 25 KV (b) 266 V (c) 782 V (d) None of these
32.Ans.. (c)
33. The voltage of Auxiliary I winding of EMU transformer is :
(a) 25 KV (b) 266 V (c) 782 V (d) None of these
33.Ans.. (b)
34. The voltage of Auxiliary II winding of EMU transformer is :
(a) 141 V (b) 266 V (c) 782 V (d) None of these
34.Ans.. (a)
35. The capacity of oil pump in EMU is :
(a) 363.6 lpm (b) 263.6 lpm (c) 360 lpm (d) 400 lpm
35.Ans.. (d)
36. The No of main poles in EMU traction motor is :
(a) 2 (b) 4 (c) 6 (d) None of these
36.Ans..(b)
37. The setting of thermostat in EMU transformer is :
(a) 75 o C (b) 85 o C (c) 65 o C (d) None of these
37.Ans (a)
38. The BDV stands for :
(a) Break down
value
(b) Break down
voltage
(c) Break
drop voltage
(d) None of the
above
38.Ans.. (b)
39. The BDV for new filtered oil for transformer is :
(a) 40 KV (b) 60 KV (c) 30 KV (d) None of these
39. Ans..(b)
40. The capacity of main compressor in EMU is:
(a) 900 lpm (b) 1000 lpm (c) 500 lpm (d) None of the
above
40.Ans.. (b)
41. The rating of MCP in EMU is:
(a) 12 HP (b) 10 HP (c) 20 HP (d) None of the
above
41. Ans..(a)
42. The No of carbon brushes in TM are :
(a) 2 (b) 4 (c) 6 (d) 8
42.Ans.. (d)
43. The condemning size of TM carbon brush is :
(a) 32 mm (b) 40 mm (c) 35 mm (d) None of the
above
43.Ans.. (a)
44. The type of TM suspension in EMU is ;
(a) Fixed (b) Axle hung nose
suspended
(c) Mounting
pad
(d) None of the
above
44.Ans.. (b)
45. The type of Schaku coupler in EMU is :
(a) Semi-
permanent
(b) Permanent
suspended
(c) Screw
coupling
(d) None of the
above
45.Ans.. (a)
46. The location of Air Dryer in EMU is
(a) HT
compartment
(b) LT compartment (c) Rear of
MC
(d) None of the
above
46. Ans..(c)
47. The location of ASL in EMU is
(a) HT
compartment
(b) LT compartment
(c) Bogie
(d) None of the
above
47. Ans.(a)
48. The function of Aux rectifier is to feed :
(a) Aux I circuit (b) Battery charger (c) Aux II
circuit
(d) None of the
above
48.Ans.. (c)
49. The function of DC-DC converter is to feed :
(a) Flasher light (b) Head light (c) Tail lamp (d) None of the
above
49.Ans.. (b)
50. The number of batteries available in EMU are :
(a) 5 (b) 8 (c) 10 (d) None of the
above
50.Ans..(c)
51. Total time required to get complete notches from starting to full power :
(a) 5-15 sec (b) 10-12 sec (c) 15-20 sec (d) None of the
above
51.Ans.(b)
52. Notches will not respond if one of the following is ‘Off’ ::
a) OL reset (b) CR (c) BIV (d) BL switch
52.Ans (c)
53. If Traction motor No 4 is grounded, which of the following relay will act?
a) OL 1&2 (b) OL 3&4 (c) EFRP (d) EFRA-II
53.Ans.. (c)
54. If any one of the MAIN Rectifier fuse is blown
a) SR will not
pickup
(b) ABB will trip
(c) Only
indication
will come
(d) TLTE
54. Ans.(c)
55. Auxiliary compressor is a
a) DC motor
(b) Single phase AC
motor
(c) 3 phase
AC motor
(d) none of these
55.Ans. (a)
56. Conservator is part of
a) Traction motor
(b) Transformer
(c) Main compressor
(d) VCB
56. Ans.(b)
57. MCB’s will not trip if
a) AWS on
(b) HL switch on
(c) Flasher
switch on
(d) HOBA fault
57. Ans..(d)
58. LTR relay is provided in
a) Power circuit
(b) Auxiliary I Circuit
(c) Auxiliary II circuit
(d) Control circuit
58. Ans.(c)
59. Voltage rating of Auxiliary I circuit is
a) 141 V (b) 266V (c) 230V (d) 110 V
59. Ans.(b)
60. In case of earth fault in Emergency light which relay will act
a) EFRP (b) OLP (c) EFRA II (d) RFAR
60. Ans..(c)
61. Setting of OL 5& 6 relays in EMU
a) 4000 A (b) 3000 A (c) 2000 A (d) 1000 A
61. Ans.(a)
62. SR not picking up with MSTWL, problem is
a) Tap changer contactor not closing
(b) Motor contactornot closing
(c) SR relay I/L bad contact
(d) Control switch defective
62. Ans.(b)
63. KF –1 is a
a) Radiator
cooling fan motor
(b) Contactor
(c) Change
over Switch
(d) Rectifier
Cooling Fan
motor
63. Ans.(a)
64. Function of Main Rectifier is
a) To Convert DC
to AC
(b) To Convert AC to
DC
(c) To Convert
DC to Variable
DC
(d) To Convert 3
phase AC to DC
64.Ans. (b)
65. Total no. of air filters for traction motors in EMU are:
a) 4 (b) 8 (c) 16 (d) 32
65. Ans.(c)
66. Voltage rating of Traction motor of EMU is
a) 575 V (b) 535 V (c) 635 V (d) 475V
66.Ans. (b)
67. Color of good silica gel is
a) Black (b) Blue (c) Pink (d) White
67.Ans. (b)
68. Purpose of Auxiliary rectifier is
a) To feed TM
(b) To feed Aux.
Compressor
(c) To feed
Main
Compressor
(d) To feed
Control Circuit
68. Ans.(c)
69. VCB will trip for following relay
a) TTR (b) RFAR (c) CBAR (d) BIR
69. Ans.(d)
70. Which of the following is an Air flow relay
a) ARR (b) RFR (c) RFAR (d) TTR
70. Ans..(b)
71. When TTR act the following lamp will glow:
a) ABB (b) UFL (c) CHBA OFF
(d) MSTWL
71. Ans.(b)
72. CC I is used for
a) Aux.
Compressor
(b) Main Compressor
(c) Oil pump
(d) Traction motors
72. Ans.(b)
73. Location of EAS in EMU:
a) Roof (b) HT room (c) Cab (d) LT room
73.Ans. (a)
74. CHBA output voltage is
a) 110V AC (b) 141 V AC (c) 266 V AC (d) 110 V DC
74.Ans.(d).
75. Fans in EMU are working with
a) 110 V AC (b) 110 V DC (c) 141 V AC (d) 266 V AC
75. Ans..(c)
76. Voltage of Aux. I circuit is
a) 141 V (b) 266 V (c) 110 V (d) 230 V
76. Ans..(b)
77. Location of OL 1 &2 relay is
a) Tap changer (b) Relay panel (c) Switch group I
(d) switch group II
77. Ans..(c)
78. Relay to detect abnormalities in Transformer
a) EFRA II (b) RFAR (c) BIR (d) OL 1 & 2
78.Ans.. (c)
79. Circuit Breaker used in MMTS EMU is
a) ABB (b) SF-6 (c) VCB (d) OCB
79. Ans..(c)
80. Location of SL in EMU is
a) HT Room (b) LT Room (c) Choke Tank
(d) Cab
80. Ans.(c)
81. Pick up Voltage of OVR is
a) 140V (b) 540V (c) 230V (d) 840V
81. Ans..(b)
82. Setting temperature of TTR is at
a) 150°C (b) 75°C (c) 200°C (d) 35°C
82.Ans.. (b)
83. To reset OL the following switch is to be put off:
a) ABB (b) Control (c) EP (d) Panto Raise
83.Ans.. (b)
84. Safety relays are
a) TTR,CBAR (b) TTR, RFAR (c) CBAR, NVR
(d) BIR,OLP
84. Ans.(d)
85. In Twin Beam Head light the rating of bulb is
a) 24 v, 70/75w (b) 110v, 70/75w (c) 24v, 90/100w
(d) 110v, 90/100w
85. Ans.(c)
86. The input/output voltage of DC-DC converter are
a) 110v/110v (b) 110v/100v (c) 110v/24v (d) 110v/32v
86. Ans..(c)
87. MCP motor is
a) 130v DC motor (b) 144v AC motor (c) 266v ACmotor
(d) 230v ACmotor
87.Ans.. (a)
88. Setting of Control governor is
a) 4.2 – 3.3
kg/cm.sq
(b) 3.2 -4.4 kg/cm.sq (c) 4.0 - 3.2
kg/cm.sq
(d) 3.0- 4.2
kg/cm.sq
88. Ans.(a)
89. SR relay is
a) EM type (b) EP type (c) latching
type
(d) electronic
type
89.Ans. (a)
90. Total no. of notches in EMU
a) 11 (b) 22 (c) 20 (d) None of the above
90. Ans.(b)
91. No of jumpers in MMTS EMU
a) 5 (b) 4 (c) 10 (d) 8 91. (a)
92. Electrolyte used in a Lead acid battery is
a) Concentrated
sulphuric acid
(b) Diluted sulphuric
acid
(c) Nitric acid
(d) Hydro
chloric acid
92.Ans.. (b)
93. The rating of HRC fuse for control circuit is
a) 50A (b) 32A (c) 63A (d) 10A
93.Ans.. (b)
94. The Ampere hour Capacity of EMU battery is
a) 90 AH (b) 75AH (c) 95AH (d) 70AH
94. Ans.(a)
95. ARR stands for:
a) Air Reset Relay (b) ABB Reset Relay (c) ABB act Relay
(d) None of the above
95. Ans.(b)
96. CBAR stands for:
a) Current
Balancing
Auxiliary Relay
(b) Current Balancing
Air Relay
(c) Current
Breaking
Auxiliary
Relay
(d) Current
Breaking Air
Relay
96.Ans.. (a)
97. The following is not a safety item
a) ACP (b) Head light (c) Flasher Light
(d) Spot light
97. Ans..(d)
98. Rating of OLP relay is
a) 100A (b) 100V (c) 160A (d) 160V
98. Ans.(c)
99. When earth fault occurs in Auxiliary compressor the following will trip
a) ABB (b) EFRA II (c) MCB (d) EFRP
99. Ans.(c)
100. Battery used in EMU is
a) Ni-Cd Cell (b) Lead acid cell (c) Dry cell (d) Edison cell
100.Ans.. (b)
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