1 MW power is to be delivered from a power station to a town 10 km away. One uses a pair of Cu wires of radius 0.5 cm for this purpose. Calculate the fraction of ohmic losses to power transmitted if,
power is transmitted at 220 V. Comment on the feasibility of doing this

1 MW power is to be delivered from a power station to a town 10 km away. One uses a pair of Cu wires of radius 0.5 cm for this purpose. Calculate the fraction of ohmic losses to power transmitted if, a step-up transformer is used to boost the voltage to 11000 V,power is transmitted, then a step-down transformer is used to bring voltage to 220 V . (rho Cu = 1.7 xx 10^-8 SI unit)

A 5.0 V stabilized power supply is required to be designed using a 12V DC power supply as an input source. The maximum power rating P_z of the Zener diode is 2.0 W. Using the Zener regulator circuit, calculate: The load current I_L , if a load resistor of 1k omega fi is connected across the Zener diode

A circular coil of radius 8.0 cm and 20 turns is rotated about its vertical diameter with an angular speed of 50 rad s^-1 in a uniform horizontal magnetic field of magnitude 3.0 xx 10^-2 T. Obtain the maximum and average emf induced in the coil. If the coil forms a closed loop of resistance 10 ohm, calculate the maximum value of current in the coil Calculate the average power lose due to the Joule heating .Where does this power come from ?