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What else can I help you with?
Device used to step voltage up or down?
As transformers do not work with DC., the answer is a voltage divider network (step down) or a voltage multiplier network (step up).
What is the purpose of dc power?
theperpose of a power supply is to step up or step down an ac voltage to a desired dc value
Can you step up or step down the DC voltage by a transformer?
You need alternating current for a transformer, for DC you would have to interrupt the power supply to make it effectively DC pulses.
How can you step up or down voltage in dc system?
A: By using PWM or magnetic amplifiers
Why transformers are not excited with dc?
by using step-up transformer we can change the voltage in higher level
Why you cant use step up transformer for step down purpose?
You can, providing you observe the voltage ratings of the windings.
When you stepup ac voltage the current drops.What will happen with CURRENT if DC is stepped up?
WHEN YOU STEP UP THE VOLTAGE AND THE LOAD IS THE SAME MORE CURRENT WILL FLOW NOT LESS. AND THAT WILL HOLD TRUE FOR DC AS WELL. IF THE LOAD REMAINS THE SAME AND YOU INCREASE THE CURRENT AC OR DC THE VOLTAGE WILL INCREASE
Why do we use AC supply in our homes?
The power transmission would require bigger wires to transmit high dc current so instead high voltage ac current is transmitted through long distance linesTo reduce losses it is necessary for the value of current through lines to be lowTranformers donot work for dc current so one cant step up and step down dc current voltage like it can be done with ac current
A transformer cannot do A. step up or step down a steady dc voltage b. step down ac voltage c couple power from primary to secondary d step up ac voltage?
This is obviously a test or homework question. If we simply answer it for you, you will learn nothing. Please find the answer by studying your course textbook. You may not think so, but we just did you a favor!
Why dc transmission is not used below a particular distance?
In a power transmission there is a need for step up and step down the voltage for a certain distance. So we cant use dc for a particular distance.AnswerD.C. transmission is used for long-range extra-high voltage transmission, for under-sea high-voltage transmission, and for international 'links'. The equipment for achieving these voltages is far more complicated/expensive compared with transformers, making short distance d.c. transmission uneconomical.
The difference between a transfer and a rectifier?
A transformer is basically used to step up or step down the main power supply. The rectifier is used to convert an alternating current (AC) or voltage to direct current (DC) or voltage.
What is the fuction of the step-up transformer?
Step-Up Transformers increase the primary voltage to a higher voltage, of same frequency.
