Realtime Cables Multiple choice Questions and Answers pdf

11    cables are used for 132 kV lines.
(a)     High tension 
(b)     Super tension
(c)    Extra high tension
(d)    Extra super voltage
Ans: d

12.    Conduit pipes are normally used to protect _____ cables.
(a)    unsheathed cables
(b)    armoured
(c)    PVC sheathed cables
(d)    all of the above
Ans: a

13.    The minimum dielectric stress in a cable is at
(a)     armour 
(b)     bedding
(c)    conductor surface
(d)    lead sheath
Ans: d

14.    In single core cables armouring is not done to
(a)     avoid excessive sheath losses
(b)     make it flexible
(c)    either of the above
(d)    none of the above
Ans: a

15.    Dielectric strength of rubber is around
(a)     5 kV/mm 
(b)     15 kV/mm
(c)     30 kV/mm 
(d)     200 kV/mm
Ans: c

16.    Low tension cables are generally used upto
(a)     200 V 
(b)     500 V
(c)     700 V 
(d)     1000 V
Ans: d

17.    In a cable, the maximum stress under operating conditions is at
(a)     insulation layer
(b)     sheath 
(c)     armour
(d)     conductor surface
Ans: d

18.    High tension cables are generally used upto
(a)     11kV 
(b)     33kV
(c)     66 kV 
(d)     132 kV
Ans: a

19.    The surge resistance of cable is
(a)     5 ohms 
(b)     20 ohms
(c)     50 ohms          
(d)     100 ohms
Ans: c

20.    PVC stands for
(a)     polyvinyl chloride
(b)     post varnish conductor
(c)    pressed and varnished cloth
(d)    positive voltage conductor
(e)    none of the above
Ans: a

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