Copper used in electric work should have a very high degree of purity, say
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Electrician Set-1
Conductors and Insulation
7
Copper used in electric work should have a very high degree of purity, say
90.9%
95.9%
96.9%
99.9%
Answer is:
99.9%
Explanation:
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Related Conductors and Insulation MCQ - Electrician (Set-1) with Answers
8)
Which one is NOT an electrical conducting material ?
Copper
Aluminium
Silver
Glass
Answer
Explanation
Answer is:
Glass
Explanation:
9)
Which one of the following is NOT a conductor ?
Silver
Copper
Aluminium
PCV
Answer
Explanation
Answer is:
PCV
Explanation:
10)
The material that contains free electron is
Silver
PVC
Mica
Rubber
Answer
Explanation
Answer is:
Silver
Explanation:
11)
Which among the following materials is used for making split rings ?
Wrought iron
Copper
Cast iron
Aluminium
Answer
Explanation
Answer is:
Copper
Explanation:
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