RRB JOBS QUESTION BANK : JUNIOR ENGINEER (NON-AC) OBJECTIVE TYPE
QUESTION BANK FOR SELECTION TO THE POST OF JUNIOR ENGINEER (NON-AC)
OBJECTIVE TYPE:
Sl.No. Item To be filled
1) Transformer secondary volts = P.V. x (S.T.) (a) Primary Amps
P.T. (b) Secondary Amps
Note (c) Secondary Turns
PV: Primary Volts
ST: Secondary Turns
PT: Primary Turns
2) Minimum insulation value of 2 M Ohms (a) 2 M Ohms
transformer of 400V winding with (b) 10 M Ohms
500V Megger is (c) 50 M Ohms
(d) 15 M Ohms
3) Breather is packed with material Silica Gel (a) Silaca Jel
(b) Oil 20 KV
4) The minimum BDV of transformer Oil is 40 KV (a) 40KV,
(b) 50KV
(c) 55 KV
5) Earth fault relays providing against Earth Fault (a) Earth fault
(b) Core beating
(c) Full of oil level
6) Over current relays providing against Over current (a) Over current
(b) Over voltage
(c) Earth fault
7) MCCB is………….. case circuit breaker Moulded (a) Miniature
(b) Moulded
Study Kit for Railway Recruitment Board (RRB) Exams
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Courtesy: RRB