Q.1. Choose the correct answer.
(i) Max. permissible variation in setting distance is
a)50mm
b)40mm
c)30mm
d)20mm
(ii) At T/O obligatory mast, height of M/L OHE should be below T/O OHE by
a) 100 mm minimum
b) 70 mm minimum
c) 60 mm
d)50 mm minimum
(iii) Distance of G jumper from obligatory mast is
a) 4.0M
b) 5.2M
c) 5.6M
(iv) Normal implantation of obligatory mast at Turn out is
a)2.50M
b) 3.0M
c) 3.5M
d) 2.36M
(v) Stagger of section insulator should be within the limit of
a) + - 50cm
b)+ - 100cm
c) + -10cm
d) + - 5cm
(vi) At insulated overlap, the horizontal gap between two OHE is
a)200mm
b) 300 mm
c)400 mm
d)500 mm
(vii) Max. limit of acidity of transformer oil in service is
a) 0.5mg KOH/g of oil
b) 0.35mg KOH/g of oil
c) 0.25mgKOH/g of oil
d) 0.45mg KOH/g of oil
(viii) Max. Tandelta value of the condenser bushing of main transformer is
a) 0.1
b) 0.00%
0) 10.07
d) 0.1
(ix) Max. permissible gradient of contact wire on Main Line is
a)1.5mm per M
b) 6 mm por M
c) 4mm per M
d)3 mm per M.
( x) Normal permissible current density for OHE is
a) 6 Amp/sq.mm
b) 5Amp/sq.mm
c) 4 Amp./sq.mm
d) 3 Amp/sq.m
(xi) %age reactance of the series reactor in Capacitor Bank is
a) 18 (ه%
b)16%
c) 13%
d)10%
(xii) PTFE neutral section located after a stop signal should be at minimum distance of
a)800 M
b)500 M
c)400M
d)300M
(xiii) Maximum distance of contact wire from S.I. runner is
a)320mm
b)270 mm
c)220 mm
d)200 mm
(xiv) Minimum Amp. hour capacity of TSS battery is
a)100
b)24
c)72
d)200
(xv) Test for remaining life assessment of transformer is.
a) DGA
b) ISS 1866
c ) ISS 335
d)FURAN
(xvi) To protect FP overlap OHE from parting ...... Relay provided
a) MHO
b) JWPC
c) Panto Flashover
d) DELTA-1
(xvii) Secondary protection of 10 KVA A.T. is by
a)LINK
b)D.O.FUSE
c) ELEMENT
d) 42 A. FUSE
(xviii) Normally PI value is the ratio of which of following.
a) 10 Min IR value/1Min IR value
b)10 sec IR value /60sec
c)1 Min IR value/10 Min IR value
d) None
(xix) What is effect of less % impedance of traction transformer.
a) Value of fault current increases
b) Value of fault current decrease
c) Fault current do not change
d) None of above.
(xx) Traction transformer 132/25 KV, 20 MVA has inax efficiency at what % load for ONAN cooling.
a)40%
b)60%
c)50%
d)100%
(xxi) What is the ampere rating of DO fuse.
a)1 Amp
b)0.1 Amp
c)0.5 Amp
d)32 Amp
(xxii) Closing time of SF6 CB is.
a)100ms
b)200ms
c)60ms
d)43ms
(xxiii) What will be the "regulating ratio" of 3 pulley block system type ATD.
a) 1:1
b) 1:2
c) 3:1
d) 5:1
( xxiv) In 3-pulley block system ATD, the measurement 'X' is the distance between-
a) centre of 1 fixed pulley to centre of
b) nearest face of the structure to fixed pu
c) nearest face of the structure to centre o
d) centre of middle fixed pulley to movable
(xxv) if tension length is maximum 750 m, ATD is provided at one end then
a) 350 m from the ATD
b) 375 m from the ATD
c) 300 m from the ATD
d) anticreep not required.
Q. No.2. Write short notes on-
i) Stock and Non stock items. (3 marks
ii) Inventory control of store. (3 marks)
iii) What are various major and minor penalties? Write down the procedure for imposing major penalty. (4 marks)
Q.No.3.
i) What are the various procedures for obtaining EIG sanction for a 25 KV AC Traction Substation? (5 marks)
ii) Indicate maintenance schedule and activities to be carried out for power transformer and circuit breakers in a TSS? (5 marks)
Q.No.4 What are the various feeder protections provided at a Feeding Posts? Explain calculations of Relay settings for these protections with suitable Illustrations? (10 marks)
Q.No.5 What is the item to be checked during pantograph entanglement? Describe the steps to reduce pantograph entanglement? (10 marks)
Q.No.6 - राजभाषा के आधार पर भारत को कितने भागों में बाँटा गया है। इन क्षेत्रों में पड़ने वाले राज्यों के नाम बतायें। केन्द्रीय सरकार के कार्यालय से इन क्षेत्रों को पत्राचार के संबंध में क्या प्रावधान है। (10 marks)
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