RRB JOBS QUESTION BANK : JUNIOR ENGINEER (NON-AC) INDICATE TRUE OR FALSE
QUESTION BANK FOR SELECTION TO THE POST OF JUNIOR ENGINEER (NON-AC)
Part – A (TRAIN LIGHTING)
INDICATE TRUE OR FALSE TO THE FOLLOWING:
1) Without EMD the tender offer is valid. False
2) Amps is the unit of current True
3) Tinned copper conductor of 14SWG is used as earth continuity wire in the
4) Internal Wiring system. True
5) Wood is the bad conductor of electricity. True
6) Oil is used as a insulation in the power transformers. False
7) The minimum capacity of power transformer on electrical General Services is 100KVA True
8) Finance vetting is required, if the cost of NS item exceeds Rs. 50,000/- while
9) Procuring through COS. True
10) The open tenders are to be opened in presence of a Accounts Officer. True
11) The advantages of ERRU is to obtain pure DC supply and inbuilt over voltage protection. True
12) The voltage of alternator in running condition cannot be checked at Roof Junction Box. False
13) The cell voltage of TL coach is 2.2V. True
14) TL coach alternator produces 35 Amps current. False
15) The change of liquid state into vapour state is called evaporation. True
16) Compressor works like a pump by drawing refrigerant vapour from the evaporator and sends to condenser. True
17) 40 SWG capacity wire is used as fuse wire for fan or light in Distribution Fuse Board. False
18) The working voltage of 20W/TL inverter is 150V D.C. False
19) Double test lamp method is adopted to detect earth leakage in a TL coach. True
20) The maximum permissible voltage drop allowed between the battery and any of the farthest light/fan point shall not exceed 3 volts at battery voltage of 108 ± 2 volts. True
21) Flame retardant low tension tape is used for insulation of cables in TL & AC coaches. True
22) Constant voltage method of charging is adopted for charging lead acid cells during POH. False
23) The width of alternator pulley of 4.5 KW 110V is 140mm. False
24) Shorting of power diode test to be conducted at full load. True
25) Bus bars provided in ERRU shall be made of electrolytic copper. True
Study Kit for Railway Recruitment Board (RRB) Exams
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