What is step-up and step-down transformer?

The output of a step-down transformer is measured to be 24 V when connected to a 12 watt light bulb.The value of the peak current is

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)

What is turns ratio of a transformer? What can you say about its value for 1 step- up transformer 2) step down transformer?

A step down transformer works on 220 volts a.c. mains. It is used to light at 100W, 20V bulb. The main current is 0.5A. What is the efficiency of the transformer?

Distinguish between step-up and step-down.

The transformer ratio of the step down transformer is 2 : 5 . Alternating voltage of 180 V amplitude is supplied to the primary. Calculate the r.m.s. value of secondary voltage

The transformation ratio in the step-up transformer is

The difference in the working of an amplifier and a step up transformer is

What is the determining step?

What is the advantage of step-wise energy release during oxidation?