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RRB JOBS QUESTION BANK : JUNIOR ENGINEER (NON-AC) FILL IN THE BLANKS
QUESTION BANK FOR SELECTION TO THE POST OF JUNIOR ENGINEER (NON-AC)
Part – A (TRAIN LIGHTING)
FILL IN THE BLANKS:
1) The process of removing heat from low temperature level and rejecting at high temperature is called. REFRIGERATION.
2) Any substances for change of its state at constant temperature absorbs/give up heat is called LATENT HEAT.
3) The sum of sensible heat and latent heat of substance in process is called ENTHALPY.
4) The latent heat of fusing ice is 144 BTU/LB.
5) The unit of refrigeration is TON OF REFREGIRATION – 12000 Btu/Hr or 3023.98 K.Cal/Hr.
6) The temperature measured by ordinary thermometer is called SENSIBLE HEAT.
7) What is the boiling point of water 100 C.
8) AT what temperature water starts freezing_ 0 C.
9) One watt is 3.412 BTU.
10) One BTU is 0.252 K.calaries.
11) The unit of heat is BTU OR K.CAL
12) RMPU means ROOF MOUNTED PACKAGE UNIT
13) The setting of HP cutout in RMPU coaches is 415 psi.
14) The setting of LP cutout in under slung coaches is 35 psi.
15) The boiling point of refrigerant R22_ -40.8 C.
16) The boiling point of refrigerant R12. – 29.8 C.
17) Artificial respiration is required to the person met with electrical accident.
18) The rating of alternator in TL coaches is 4.5 KW.
19) The latent heat of evaporation IS THE HEAT REQUIRED TO CHANGE THE LIQUID INTO VAPOUR.
20) The temperature maintained in the refrigerator is LESS then 0 C.
21) The dry bulb and vet bulb temperatures equals then the RH is 100%
22) The moisture absorption in refrigeration circuit is done by DEHYDRATOR CUM FILTER.
23) The commonly used refrigerants are R 12 & R 22
24) The lubrication of system in the sealed compressors is done by FREEZOL
25) The 3-phase voltage unbalance in supply should not exceed 2.5. % To 5%
26) For maintaining power supply quality the rate of change of frequency should not exceed. 1 HZ/Sec.
27) The voltage of 11 KV supply is 11000V
28) Tender Notice is to be published for. Open tender
29) Copper is the good conductor of electricity.
30) Completion estimate is not required for calling tender.
31) Contingencies charges mean Transportation charges.
32) Detailed estimate is to be prepared for sanctioned works.
33) Detailed estimate needs sanction of HOD.
34) The fire extinguisher used for Electrical fire is CO2
35) Fire is the combination of material and temperature & Oxygen.
36) B Type of fire extinguisher used to nullify the oil fires.
37) Electric type of fire is clarified as D type.
38) CO2 type fire extinguisher is used for electrical fires.
39) Ordinary fire can be extinguished by water.
40) RUBBER HAND GLOVES are to be used while operating isolator handle in substations.
41) Ordinary fire can be extinguished by WATER OR SAND.
42) Artificial respiration is required to the person met with ELECTRICAL accident.
43) What is IOD? INJURED ON DUTY
44) What is meant by fatal accident? THE ACCIDENT CAUSES WITH LOSS OF HUMAN LIFE
45) If a man touches a live wire, he gets SHOCK. /electrocuted.
46) CTC type extinguisher is used for ELECTRICAL fire.
47) If a transformer catches fire FOAM type of fire.
48) The fire extinguisher used for Electrical fire is CO2 TYPE.
49) Fire is the combination of Material, temperature and oxygen
50) B type of fire extinguisher used to nullify the oil fires.
51) Electric type of fire is clarified as D type.
52) CO2 type fire extinguisher is used for ELECTRICAL fires.
53) Soda ash type fire extinguisher is used for GENERAL fires.
54) CTC OR FOAM type of fire extinguishers will be used to extinguisher chemical fires.
55) The system voltage in TL coaches is 110 V DC supply.
56) Monoblock type & 120 Ah capacity of batteries are used in TL coaches.
57) The codal life of lead acid batteries is 04 years.
58) The codal life of VRLA batteries is 04 years.
59) The 35 SWG size of fuse wire is used for each fan or light in distribution fuse board.
60) The voltage setting of 4.5 KW alternator at regulator is 123 ± 0.5 volts.
61) If a cell is found less than 1.7 volts, it is considered as defective.
62) The wattage of 400 mm DC fan in TL coach is 35 watts.
63) The specific gravity of sulphuric acid which is used to make as electrolyte is 1.835.
64) The working voltage of 20W/TL inverter is 110 volts DC.
65) 16A HRC fuse is used for L1, L2 & fan circuit in RJB of TL coaches.
66) 100 KVA inverter capacity is used for cell phone charger in TL coaches.
67) The gap between wheel edge to axle pulley edge is 145mm ± 3mm.
68) The gap between the mounting bracket to adjustment nut of tension device for 4.5 KW alternator is 75mm.
69) Earht fault can be detected by using double test lamp or multi-meter.
70) The capacity of alternator, batteries & fans in TL coach are 4.5KW, 120Ah & 35W.
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