COMPETENCY CERTIFICATE EXAMINATION
Name: ________________________________Designation: ___________________
PF.No. ________________________________Date _ ____________
Dates of attending competency certificate training (on-site): __ ___________
All questions carry 1 mark each. There is no negative mark. Attempt all 40 questions. Total marks-40
A. Tick the correct answer (30 x 1 = 30)
1. What is the input Voltage of Regulated Battery charger (RBC) ?
a) 415 Volts, 3 phase, AC b)230V, 1 phase AC c)110 V, AC d) 110 V, DC
2. What is the current carrying capacity of Feeder contactors in LBH Powercars ?
a) 200 A b) 750A c) 415A d) 600A
3. What is the current rating of Air circuit breaker (ACB) in LHB Powercar?
a) 800A b) 1000A c) 750A d) 415A
4. What is the current rating of disconnecting and earthing device in LHB AC coaches and Powercars?
a) 80A b)100 A c) 125 A d)200 A
5. According to Rule No. 55 of IE Rules, permissible variation in frequency of AC voltage and current is
a) +3%, -3% b) +10%, -10% c) +6%, -6% d) +5%, -3%
6. What is the rating of megger to be used while checking equipments working on 750 Volts?
a) 1000 Volts DC b) 500 V DC c) 500 V AC d) 1000V AC
7. Capacity of power transformer in LHB Powercar is?
a) 60kVA b)50kVA c)100 kVA d) 100VA
8. How many power transformers are available in LHB Powercar?
a) 1 b)2 c) 3 d) 4
9. How many Diesel tanks are there in LHB Power Cars?
a) 1 b) 2 c) 3 d) 4
10. One kilowatt hour is equal to ____________ unit of energy.
a) 736 units b)745 units c) 1000 units d) 1 unit
11. When A feeder is ON from LSLRD, which feeder can be closed from Powercar, in case of emergency?
a) A feeder b) B feeder c) either A or B d) Neither A nor B
12. What is the tripping speed of over speed governor of Diesel Engine in LHB Powercars?
a) 1800 rpm b) 1000rpm c) 1500rpm d) 800rpm
13. Capacity of diesel Engine provided in LHB Powercar is?
a) 500kW b) 400kW c) 500BHP d) 496BHP
14. What is the capacity of Alternator in Powercar?.
a) 500kVA b) 400kVA c) 500kW d) 436kVA
15. LHB Powercar Alternator output Voltage is ?
a) 750V AC b) 415V AC c)230V AC d) 110V AC
16. MMR is used for monitoring
a) Low/High Voltage b) Low/High Frequency c) Voltage imbalance and Phase sequence
d) All of these
17. Power factor of the AC system can be improved by the use of
a) Resistor b) Capacitor c) Inductor d) Transformer
18. According to IE Rule, 750 V is considered as
a) Low Voltage b) Medium Voltage c) High Voltage d) Extra High Voltage
19. What is the minimum insulation resistance required for 415 Volts wiring and equipments ?
a) 0.1 M Ω b) 1 M Ω c) 2 M Ω d) 3 M Ω
20. What liquid is filled in radiators for cooling purpose?
a) Coolants b) Water c) Diesel d) any of these
21. What is rating of Radiator motor in LHB Power Car?
a) 40 HP b) 50 HP c) 60 HP d) 100 HP
22. What is the commercial unit of electrical energy?
a) Units b) Watts c) Ampere Hour d) kilo Volt Ampere
23. Electrical fires are classified as
a) Class A b) Class B c) Class C d) Class D
24. What is the best conductor of electricity among the following?
a) Tungsten b) Aluminium c) Stainless Steel d) Copper
25. What is contactor coil supply of Local main supply (LMS) contactors K41 & K42?
a) 415 V AC b) 750 V AC c) 230 Volts AC d) 110V DC
26. What is the contactor coil supply of Feeder contactors K01 & K03 in Powercar SBC
a) 415 V AC b) 750 V AC c) 230 Volts AC d) 110V DC
27. What is the capacity of Diesel tank in LHB Power Car
a) 3000 liters X 2 Nos b) 1000 liters X 2 Nos c) 750 liters X 2 Nos d) 1500 Liters X 2 Nos
28. IVC of Powercar to be coupled to Loco while
a) Both pantograph of loco in raised position b) Both pantograph of loco in lowered position
c) one pantograph in lowered position d) never mind about panto position
29. Switch or fuse should be connected to ________ wire.
a) Neutral Wire b) Earth Wire c) Phase Wire d) None of these
30. What is the tripping value of lube oil pressure cutout in kg/sq.cm ?
a) 2.5 b) 3.8 c) 1.2 d)1.8
B. Write the full form of the given word (10 x 1 =10)
31. kWh
32. HOG
33. AVR
34. NWP
35. WRA
36. MMR
37. FOL
38. EOG
39. MPCB
40. D & ED
Marks obtained in written examination ______________ / 40
SSE/AC/MAS
Qualified / Not Qualified
Order of Competent Authority: - Issue Competency Certificate Grade A / B / C / D / E
DEE/Chg/MAS
