whats meant by currrent and how they are creating.how much is required for a small 1500 rpm motor with a 50hz?

Answer 1

Current is the rate at which electrical charge flows in a circuit, and it is usually represented with a capital I. We don't have enough information to know how much current is needed for your motor. You would need to know something about the voltage (V) or power (P) required to operate the motor, or about the internal resistance (R) of the motor. There are formulae involving current, such as P = IV and I = V/R, which would let you calculate the current if you had some of the other information.

Answer 2

All electrical motors are rated in terms of operational voltage and current requirements. They can be 50Hz or 60Hz (cycle) version.

There are miniature dc motors used in computers and there are fractional horse power motors for many houshold appliances.

The word "small" would mean different things to people in different industries.

Most motors would have name plate with all the rating information or the information may be stamped on an appropriate metallic enclosure part so check it out.

If you have the right voltage and correct frequency but low current availability the motor may run very slow. The motor would generally draw the amount of current it needs depending upon the load conditions - greater the load, more current it would draw within its rating.

If the circuit is already overloaded, sometime due to too many appliances on the same circuit, it may not operate properly.

The following article may be useful in reviewing some basic concepts about electrical mortors:

http://en.wikipedia.org/wiki/Electric_motor