Diode - Diode objective questions and answers

36. The peak inverse voltage (PIV) is applied across a diode when it is

   A.Forward-biased

   B.Reversed-biased

   C.On a heat sink

   D.ON

37. In a P-N junction barrier potential is caused by

   A.Flow of drift current

   B.Thermally-generated electrons and holes

   C.Diffusion of majority carries across the junction

   D.Migration of minority carries across the junction

38. When some voltage in applied to an intrinsic semiconductor at room temperature

   A.Electrons move to positive terminal and holes move to negative terminal

   B.Electrons move to negative terminal and holes move to positive terminal

   C.Both holes as well as electrons move to negative terminal

   D.Both holes as well as electrons move to positive terminal

39. Thermionic emission of electrons results from

   A.Photovoltaic effect

   B.Electrostatic fields

   C.High temperatures

   D.Strong magnetic fields

40. Which of the following acceptor impurities is generally used for silicon?

   A.Gallium

   B.Indium

   C.Boron

   D.None of the above

< 1 2 3 4 5 6 7 8 9 10 Next>