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.
What will happen if AC supply of the same rating is given to DC series motor?
When AC supply is given to DC series motor:
An AC supply will exert unidirectional torque because the direction of armature current and field current reverses at the same time and the direction of rotation will as it is.
Can I run an AC motor on DC?
1 Answer. 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.
What are the disadvantages when AC supply is given to DC series motor?
When a DC series motor is connected to AC supply
- EMF will be induced and motor gets running but not efficient output power.
- The power factor will be low because of a high inductance of field and armature circuits.
- Eddy current losses will be high and hence excessive heating.
- Sparking at the commutator will occur.
Why are DC motors more expensive than AC?
The rotor design is probably the most important factor in making the DC motor more expensive. If the DC motor stator has permanent magnets, that could make it more expensive or not depending on the magnet material. There are many more manufacturers making AC motors and many more AC motors used at 1000 kW.
How can you tell if a motor is AC or DC?
Look for the stator core construction and rotor. If there is no commutator, then it is a AC motor. If there is a commutator and brushes, it may be either a DC motor or an AC commutator motor (Universal motor).
Can AC motor run on battery?
How to run a 1.5 HP AC motor from a 12v DC battery supply – Quora. You may be able to run it with an inverter but not for long, if you’re thinking of an ordinary car battery. It’s going to draw at least 150 amps, and even more for start-up. Remember a car battery won’t put out 12V at 150 amps.
Why AC current is not used in DC motor?
DC is more lethal than AC for the same voltage because it’s harder to let go of if touched as the voltage does not go through zero. (Muscles contract with constant force with DC). Electrolytic corrosion is more problematic with DC. DC arcs do not “quench” as easily (because voltage does not go through zero).
How do you run AC current on a DC motor?
A DC motor can be run on AC by rectifying the AC source, providing the supply voltage and available current from the circuit is sufficient for the rating of the motor. To run an AC motor off a DC supply requires a DC-AC converter.