6 1-41.     Which of the following undesirable characteristics is associated with cathode biasing?   1.    Plate voltage is increased by the voltage amount of biasing   2.    The cathode is forced to operate at a positive potential   3.    The maximum negative output is limited   4.    Current must flow in the circuit continuously 1-42.     Grid-leak biasing develops a biasing voltage from (a) what portion of the input signal and (b) by what type of action?   1.    (a) Negative (b) resistive   2.    (a) Negative (b) capacitive   3.    (a) Positive (b) capacitive   4.    (a) Positive (b) resistive 1-43.     During the charge cycle in grid-leak biasing, C_c, draws current through what circuit element?   1.    R_g   2.    rgk   3.    R_L   4.    R_k 1-44.     During the discharge cycle in grid-leak biasing, C_c discharges across what circuit element?   1.    R_g   2.    rgk   3.    R_L   4.    R_k 1-45.     The effect of grid-leak biasing is to rectify the input signal. Because of this, the amplitude of the biasing voltage depends upon which of the following factors?   1.    Amplitude of the input   2.    Frequency of the input   3.    Size of R_g and C_c   4.    All of the above 1-46.     During the charging cycle in grid-leak biasing, the effective size of rgk is decreased. This is caused by what electronic principle?   1.    Electrostatic repulsion between the grid and the plate   2.    Electrostatic repulsion between the grid and the cathode   3.    Electrostatic attraction between the cathode and the grid   4.    Electrostatic attraction between the plate and the cathode 1-47.     The charge and discharge of capacitor C_c, used in grid-leak circuits, will be equal when what condition occurs?   1.    When Rgk becomes the same value as Rg   2.    When C_c reaches its maximum charge-holding capacity   3.    When the charge on C_c cuts the tube off   4.    When R_g becomes larger than rgk _______________________________________ IN ANSWERING QUESTIONS 1-48 THROUGH 1-50, MATCH EACH CHARACTERISTIC OF AMPLIFIER OPERATION IN COLUMN A WITH ITS ASSOCIATED CLASS OF AMPLIFIER IN COLUMN B. A. CHARACTERISTICS   B. CLASSES 1-48.     Conduction occurs in the   tube during only 50% of   the entire input cycle   1.   2. 3. 4. A   AB B C 1-49.     Conduction occurs in the   tube throughout the entire input cycle   1-50.     Conduction occurs in the   tube for more than 50%,   but less than 100% of the entire input cycle   _______________________________________