plz join only for diploma

pickling is

  • protection of surface from rusting
  • none
  • removal of scale,grease etc from the surface
  • a layer coating for preventing surface deterioration

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an electromagnetic field is radiated from

  • a stationary point charge
  • a conductor carrying a dc current
  • an oscillating dipole
  • a capacitor with a dc voltage

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cvpp JE results

Who will matcch today?

  • IND
  • PAK

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which material use for piezoelectric material

  • insulator
  • conductor and semiconductor
  • semiconductors only
  • insulator and conductor

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