5 1-39.   A perfect bond at the junction of the two diode materials is important for which of the following reasons? 1.    It is the point at which rectification takes place 2.    It is the point at which amplification takes place 3.    It is the main structural point from where the diode gets its strength 4.    All of the above 1-40.   Current flow in a copper wire can be compared to current flow in what type(s) of semiconductor material? 1.    N-type only 2.    P-type only 3.    N- and P-type 4.    All types 1-41.   What is the overall electrical charge of the N-material in a semiconductor? 1.    Zero 2.    Some negative value 3.    Some positive value 4.    Depending upon the balance of electrons, it will be positive or negative 1-42.   What is the overall electrical charge of the P-material in a semiconductor? 1.    Zero 2.    Some negative value 3.    Some positive value 4.    Depending upon the balance of electrons, it will be positive or negative 1-43.   What causes the process called junction recombination to occur when N and P materials are joined together? 1.    The diffusion of electrons and holes moving across the junction into the two materials 2.    The generation of heat which causes the electrons to bombard the holes at the junction 3.    The development of an electrostatic field on each side of the junction 4.    The loss of electrons to the depletion region 1-44.   After the junction recombination process has reached equilibrium, what is the area that surrounds the junction called? 1.    The anode 2.    The free ion space 3.    The depletion region 4.    The electrostatic field 1-45.   A voltage applied to a PN junction so that it reduces the junction barrier and aids current flow is what type of bias? 1.    Indirect 2.    Reverse 3.    Forward 4.    Direct 1-46.   In a forward-biased PN junction, when an electron leaves the negative terminal of the battery and enters the N material, it becomes what type of carrier? 1.    Loop 2.    Signal 3.    Majority 4.    Minority