61. Material with lowest temperature coefficient:

1. 1. Aluminium

   
   
   

   2. Copper

   
   
   

   3. Gold

   
   
   

   4. Silver

   
   
   

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   NA

   Correct Option: C

   NA

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62. Material with highest resistivity:

1. 1. Kanthal

   
   
   

   2. Nichrome

   
   
   

   3. Manganin

   
   
   

   4. Tantenum

   
   
   

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   NA

   Correct Option: A

   NA

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63. Which of the following contains silicon?

1. 1. Brass

   
   
   

   2. Solder

   
   
   

   3. Glass

   
   
   

   4. Polythene

   
   
   

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   NA

   Correct Option: C

   NA

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64. PVC stands for:

1. 1. Plastic very compact

   
   
   

   2. Polythene vinyl chloride

   
   
   

   3. Phosphorous vanadium compound

   
   
   

   4. Poly vinyl chloride

   
   
   

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   PVC stands for polyvinyl chloride.

   Correct Option: D

   PVC stands for polyvinyl chloride.

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65. Lead is widely used in:

1. 1. transformers

   
   
   

   2. switchgears

   
   
   

   3. galvanised pipes

   
   
   

   4. batteries

   
   
   

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   Lead is widely used in Batteries.

   Correct Option: D

   Lead is widely used in Batteries.

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