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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

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Q20.
carbon is _______ material
  • A. conducting
  • B. dielectric
  • C. semiconducting
  • D. nonconducting

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Q21.
conductivity of aluminium is ________ time of that of copper
  • A. 1.63
  • B. 0.6
  • C. 2.5
  • D. 0.4

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Q22.
high frequency transformer cores are generally made from
  • A. mu-metal
  • B. mone-metal
  • C. ferrites
  • D. cobalt

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Q23.
cold working operation
  • A. increases conductivity
  • B. increases resistivity
  • C. converts a thicker wire into a thin wire
  • D. removes internal stresses

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Q24.
the converse of magnetostriction effect is
  • A. villari effect
  • B. curie effect
  • C. skin effect
  • D. seebeck effect

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