NCCER 26404 Basic Electrical Theory With Explanations

NCCER 26404 Basic Electrical Theory
With Explanations

An |SCR |is |made |from |adjoining |layers |of |semiconductor |material |in |the |. |- |correct |answer |-PNPN |
arrangement



In |the |figure |provided, |the |lead |marked |A |is |the |transistor |. |- |correct |answer |-emitter



AC |power |can |be |converted |to |DC |power |using |. |- |correct |answer |-rectifier |diodes



A |transistor |is |made |by |joining |. |- |correct |answer |-three |layers |of |semiconductor |material



The |figure |provided |shows |the |electrical |symbol |for |a(n) |. |- |correct |answer |-NPN |transistor



A |device |that |can |be |described |as |a |diac |with |a |gate |terminal |added |is |a(n) |________. |- |correct |
answer |-triac



Silicon |is |widely |used |as |a |semiconductor |because |it |. |- |correct |answer |-withstands |heat



An |atom |that |loses |a |negatively |charged |electron |becomes |a |. |- |correct |answer |-positive |ion



In |order |to |permit |the |emergence |of |the |MAXIMUM |number |of |photons |in |an |LED, |the |conducting |
surface |- |correct |answer |-connected |to |the |P-type |material |is |much |smaller



Of |the |following, |which |is |the |BEST |conductor? |- |correct |answer |-Aluminum



The |difference |between |an |N-channel |and |a |P-channel |JFET |is |- |correct |answer |-the |polarity |of |the |
voltage |to |which |the |transistor |is |connected