Transmission Lines and Waveguides MCQs

consider the following statements regarding a plane wave propagating through free space : The direction of field 1. `E' is perpendicular to the direction of propagation 2. 'H' is perpendicular to the direction of propagation. 3. `E' is perpendicular to the direction of the field 'H'. Which of these statements are correct?

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

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

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 transmission line whose characteristic impedance is a pure resistance

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

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

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

Which of the following conditions will not guarantee a distortionless transmission line?