☰ Electrical Engineering Material (Electrical Engineering) - MCQs

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Q19.

________ is employed for winding of coils for DC motor starters

  • A. nichrome
  • B. copper
  • C. aluminium
  • D. constantan
    ✍ Discuss    
Q20.

carbon is _______ material

  • A. conducting
  • B. dielectric
  • C. semiconducting
  • D. nonconducting
    ✍ Discuss    
Q21.

conductivity of aluminium is ________ time of that of copper

  • A. 1.63
  • B. 0.6
  • C. 2.5
  • D. 0.4
    ✍ Discuss    
Q22.

high frequency transformer cores are generally made from

  • A. mu-metal
  • B. mone-metal
  • C. ferrites
  • D. cobalt
    ✍ Discuss    
Q23.

cold working operation

  • A. increases conductivity
  • B. increases resistivity
  • C. converts a thicker wire into a thin wire
  • D. removes internal stresses
    ✍ Discuss    
Q24.

the converse of magnetostriction effect is

  • A. villari effect
  • B. curie effect
  • C. skin effect
  • D. seebeck effect
    ✍ Discuss    
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