1, what is the working voltage of medium grade cables?
Ans: 650 volts.
2, what for vIR stands?
Ans: vulcanised india rubber.
3, The specification of cable is given as 3/0.91. What does it indicate?
Ans: The cable consists of three wires of 0.91 mm diameter.
4, What material is used as insulator is making flexible cable?
Ans: pvc ( poly vinyle chloridel.
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