37. In describing the transmission parameters
(a) The input voltage and current are express in terms of output voltage and current
(b) The input voltage and output voltage are express in terms of output current and input current
(c) The input voltage and output current are express in terms of input current and output voltage
(d) None of these
pls anyone can explain it
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AC means Alternating Current and DC means Direct Current. AC and DC are also used when referring to voltages and electrical signals which are not currents! ... An electrical signal is a voltage or current which conveys information, usually it means a voltage. The term can be used for any voltage or current in a circuit.
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