## Electric transformers converting voltage ?

Question by Cassie B: Electric transformers converting voltage ?
A “step-down” transformer is to be used to convert an ac voltage of 120 V down to 6 V to power an electric train. If there are 500 turns in the primary (input) coil, how many turns should be in the secondary coil?

solve for the ratio

120/6 = 500/X x=secondary windings

cross multiply

120X=6 * 500

120X=3000

x=25 turns

What do you think? Answer below!

## A step-down transformer is to be used to convert an ac voltage of 120V to 6V to power an electric train.?

Question by : A step-down transformer is to be used to convert an ac voltage of 120V to 6V to power an electric train.?
If there are 300 turns in the primary coil, how many turns shoud there be in the secondary coil?

You need to work with the fact that Voltage Out/Voltage In = Turns in 2nd coil/turns in 1st coil.

Using that, you can sub in the numbers to get:

6/120 = x/300

Rearrange to find x, which is the number of turns in the secondary coil

What do you think? Answer below!

## A step-down transformer is to be used to convert an ac voltage of 105 V to 6 V to power an electric train. If?

Question by steve00878: A step-down transformer is to be used to convert an ac voltage of 105 V to 6 V to power an electric train. If?
A step-down transformer is to be used to convert an ac voltage of 105 V to 6 V to power an electric train. If there are 420 turns in the primary coil, how many turns should there be in the secondary coil?

The voltage ratio is the same as the turns ratio.
6/105 = X/420
X = 6*420/105 = 24 turns

What do you think? Answer below!

## Why DC voltage is utilized in locomotive or in Electric trains?

Question by Ryan C: Why DC voltage is utilized in locomotive or in Electric trains?

DC current is constant, AC current varies in voltage during its cycle. If an electric motor, such as those found in trains, is under AC, the motor would probably either speed up then slow down and then speed up and slow down, etc. Or go forward, reverse, forward, reverse, etc. in a quick fashion. DC current being constant, makes the motor run at a constant speed and direction since the electrical flow is constant. I think that makes sense, and that’s how I understand it.

## what type of electricity used in electric trains? DC or AC ? What is the voltage?

Question by koolgirisho: what type of electricity used in electric trains? DC or AC ? What is the voltage?
Electric trains

DC
duh!
ac is air conditioning!
lmao
jk
idk
and idc

## For model train power supply’s, there is a set maximum safe voltage but what about amperage?

Question by Mountain: For model train power supply’s, there is a set maximum safe voltage but what about amperage?
What if I connected a car battery to my G Scale train; It’s only 12 volts and they can go to around 20 at least I believe; but what about the 800 amps?