11. The term “balance line” means that :
(a) Both conductors carry currents that flow in opposite directors
(b) Conductors present equal capacitance to ground
(c) One conductor is connected to ground
(d) a and b above
12 12. The characteristic impedance of a transmission line is determined by :
(a) Its operating frequency
(b) Its length
(c) Its physical size and arrangement
(d) The signal applied at the input terminal
13 13. If a change in the dielectric material decreases the capacitance, the characteristic impedance is :
(a) Kept constant
(b) Decreased
(c) Increased
(d) Halved
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