The Shunt winding has a large number of turns so that it has appreciable inductance. When A.C is applied to a shunt motor, the large inductive reactance of shunt winding will reduce the field current too much. Consequently, Shunt motor will not usually run on A.C Supply.
What happens if AC supply is given to DC shunt motor?
We know that the shunt winding of DC shunt Motor has large number of turns so that it has appreciate amount of inductance. When AC is applied to shunt motor inductive reactance of shunt winding reduces field current too much,c consequently shunt motor will not run on AC supply.
Can a DC motor run AC supply?
We already know that in a DC Series motor the field winding has very less resistance than a DC Shunt Motor as the field is connected in series with the Armature Winding. So if we give AC supply on a DC Series Motor it will run perfectly. In fact, DC Series can run on both AC and DC supply.
Can you use series and shunt motor with AC source?
The current in the armature winding is in phase with the magnetic field produced by the field winding. However, a dc series motor does not operate well on ac power. The motor has a low-efficiency power factor and runs with considerable sparking a low the brushes.
Can a DC fan run on AC?
Fans can run on both AC as well as DC according to the circuitry used inside it. Fans that we use in our houses run on AC. They have AC motors inside them. They can not be made to run on DC.
Which part will surely tell that given motor is DC motor and not an AC type?
Commutator
Commutator will surely tell that given motor is DC motor and not an AC type. 3.
When a DC series motor is connected to AC supply it will?
When an AC supply is given to the DC series motor then there will be high inductance in field and armature circuits which causes a low power factor. With operation on alternating currents, the eddy current loss increases considerably. Hence in addition to the armature, the field structure has to be laminated.
Can you plug DC into AC?
The only trouble is, though many of our appliances are designed to work with AC, small-scale power generators often produce DC. That means if you want to run something like an AC-powered gadget from a DC car battery in a mobile home, you need a device that will convert DC to AC—an inverter, as it’s called.
What happens if you connect DC to AC?
In short, if we connect an AC device to the DC supply: Some machine like motors may not work properly or even damage (except the universal motors operated on both AC and DC). A Transformer may start to smoke and burn if DC supply is connected to the primary of a transformer. Same is the case of alternators.
How do you run AC fan on DC?
1 Answer. Most AC fans have induction motors and as such won’t work on DC. You will most likely need an inverter, to convert from 12VDC to the AC voltage that fan requires.
How do you identify by which part will tell that given motor is DC or AC motor type?
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).
Why is the DC motor preferred over AC motor?
D.C. motor is preferred over an A.C. motor when we need variable speed operation because As in DC series motor field winding and armature winding is in series. So whenever armature current changes field current also changes as they are same due to which its torque changes rapidly and we get a variable speed.
Where is shunt motor normally used?
shunt motors are used wherever there is a request for stable speed. Shunt DC motors can be used in centrifugal pumps, lifts, weaving and lathe machines, blowers, fans, conveyors, spinning machines, and more.
When a DC machine is connected to the DC supply main it will produce?
A 4 pole, 500V shunt motor has 720 wave connected conductors on its armature. The full load armature current is 60A and flux per pole is 0.03Wb.
| Q. | When a dc machine is connected to the dc supply main it will produce: |
|---|---|
| D. | none of the above |
| Answer» a. emf in opposition to the applied voltage |
What is the difference between AC series motor and DC series motor?
AC motor works on the concept of alternating current, whereas DC Motor works on the direct current.DC motors are self-starting motors. The armature is stationary, and the magnetic field rotates in the AC motor but in DC motor the armature rotates, and the magnetic field is stationary.
When motor is connected to AC supply the power factor will be low because of?
high inductance of field and armature circuits B). induced current in rotor due to variations of flux C).
When a D.C. series motor is connected to A.C. supply, the power factor will be low because of.
| Type | Answers |
|---|---|
| C) | fine copper wire winding |
| D) | none of these |
What will happen if a DC motor is supplied with AC voltage?
If we give dc supply to a ac motor it draws high current since the resistance of the winding is very low. Also no current will be induced in the rotor from stators dc supply.So motor will not start at all. Ultimately it burnt out.
Which motor is used in fan AC or DC?
Most ceiling fans, as well as most household appliances, use AC motors, as AC is the type of current distributed by power companies. AC motors function by being connected directly to a power source.
What is the difference between an AC and DC fan?
The direct current fans, or DC fans, are powered with a potential of fixed value such as the voltage of a battery. Typical voltage values for DC fans are, 5V, 12V, 24V and 48V. In contrast, the alternating current fans, or AC fans, are powered with a changing voltage of positive and of equal negative value.
How do I know if my ceiling fan is AC or DC?
AC means alternating current and DC means direct current. The difference between the two is in how the motors handle the electrical current they receive from the wiring in your ceiling.
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