what is step down voltage and step up ?
Answers
Answer:
Step-up Transformer
A transformer in which the output (secondary) voltage is greater than its input (primary) voltage is called a step-up transformer. The step-up transformer decreases the output current for keeping the input and output power of the system equal.
Considered a step-up transformer shown in the figure below. The E1 and E2 are the voltages, and T1 and T2 are the number of turns on the primary and secondary winding of the transformer.
Applications – Step-up transformer is used in transmission lines for transforming the high voltage produced by the alternator.The power loss of the transmission line is directly proportional to the square of the current flows through it.
Power = I2R
The output current of the step-up transformer is less, and hence it is used for reducing the power loss. The step-up transformer is also used for starting the electrical motor, in the microwave oven, X-rays machines, etc.
Step-down Transformer
A transformer in which the output (secondary) voltage is less than its input (primary) voltage is called a step-down transformer. The number of turns on the primary of the transformer is greater than the turn on the secondary of the transformer, i.e., T2 < T1. The step-down transformer is shown in the figure below.
Step-up Transformer
A transformer in which the output (secondary) voltage is greater than its input (primary) voltage is called a step-up transformer. The step-up transformer decreases the output current for keeping the input and output power of the system equal.
Considered a step-up transformer shown in the figure below. The E1 and E2 are the voltages, and T1 and T2 are the number of turns on the primary and secondary winding of the transformer.
Explanation: