Question 102. 2. A very lossy,M4 long, 500 transmission line is open circuited at the load end. The input impedance measured at the other end of the line is approximately
Question 104. 3. A lossless transmission line having 500 characteristic impedance and length X/4 is short circuited at one end and connected to an ideal voltage source of IV at the other end. The current drawn from the voltage source is
Question 105. 4. A (75 ? j50)C2 load is connected to a coaxial transmission line of Zo = 750, at 10 GHz. The best method of matching consists in connecting
a short-circuited stub at the load
an inductance at the load
a capacitance at some specific distance from the load
a short-circuited stub at some specific distancp from the load
Question 107. 7. The input impedance of a loss-les transmission line is 100 ohms when terminated in a short-circuit, and 64 ohms when terminated in an open circuit. The characteristic impedance of the line is
Question 108. 1. On a resistively terminated high frequency loss-loss transmission line fed by a 500 MHz source, the VSWR is found to be equal to 2 and the first voltage minimum is measured at 30 cm from the load end. What is the value of the "normalised" load resistance?
Question 109. 8. The electric field at a point from a transmitter radiating a certain power is 2.5 mV/m. If the transmitter power is doubled, the field strength at that point will be about
Question 110. 9. A quarter-wave transformer is used for matching a load of 225 ohms connected to a transmission line of 256 ohms in order to reduce the SWR along the line to 1. The characteristic impedance (in ohms) of the transformer is
