# How do you know if a motor is AC or DC?

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## Will an AC motor run on DC?

The AC series motor you describe is a universal motor, and will work fine on DC. The speed characteristics will be a little different, since when running on AC there’s a significant reactive drop in the field windings that reduces the available driving emf.

## How can you tell how old an electric motor is?

Motors will have the date code preceding the model number. The first letter or number of the prefix indicates the year, and the last letter of the prefix indicates the month of manufacture.

Which DC motor has got maximum self-loading property? Explanation: A differentially compound DC motor, flux reduces so sharply at small increase in load at higher values of load.

## What will happen when the DC motor is connected to AC supply then?

1. What will happen if DC shunt motor is connected across AC supply? Explanation: In case of parallel field connection, it won’t rotate at all and will start humming and will create vibrations, as a torque produced by positive and negative cycle will cancel out each other. DC motor will be heated up and it may burn.

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## What happens when you connect a DC motor to AC?

The D.C. motor may run if the A.C. supply is given. If there is a parallel connection, it won’t rotate at all and will start humming, as the positive and negative cycle will cancel out each other.

## Should a motor run at FLA?

If it is a continuous duty rated motor, it should be able to be run at its rated FLA without any problem. However, I would be concerned that if its running at FLA, it may dip into overload under some conditions during the 3 day run. You could check the running temperature at the end of its cycle.

## What is FLC of motor?

In an electric motor, FLA stands for full-load amperes, and FLC stands for full-load current. … FLC represents the theoretical capacity of a motor, or the maximum current the motor windings are designed to carry.