Question

4-3. the dominant mode te10 is propagated in a rectangular waveguide of dimensions a=6cm ,and b=4cm.the distance between a maximum and minimum is 4.47cm .determine the signal frequency

Answer 1

The primary of a transformer has 400 turns while the secondary has 2000 turns. if the power output from the secondary at 1100 v is 12.1 kw. calculate primary voltage. if the resistance of the primary is 0.2 ohm and that of secondary is 2 ohm and the efficiency is 90%. calculate the heat losses in the primary and secondary coils