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RRB JOBS QUESTION BANK : JUNIOR ENGINEER (NON-AC) OBJECTIVE TYPE

QUESTION BANK FOR SELECTION TO THE POST OF JUNIOR ENGINEER (NON-AC)

Part – B
(POWER)

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

IMPORTANT: RRB EXAM PORTAL is NOT associated with Railway Recruitment Board(RRB) or Indian Railways, For RRB official website visit - www.rrcb.gov.in