How can the power of an electric motor be increased class 10?
(iii) A soft iron core on which the coil is wound. The combination of soft iron core and coil is an armature. It enhances the power of motor. Thus, commercial electric motors do not use permanent magnet to rotate the armature because permanent magnets are weak and do not produce strong magnetic field in the region.
Which motor is most efficient?
Tests carried out on a 44 megawatt 6-pole synchronous ABB motor shortly before delivery showed an efficiency 0.25 percent greater than the 98.8 percent stipulated in the contract, resulting in the world record for electric motor efficiency.
How can we increase the power of DC motor?
Clearly, the power of a DC motor depends on the torque of the coil. Since torque depends on the current and the area of the coil. Also, the magnetic field can be increased by adding a soft iron core. Hence the correct option is D.
What enhances power of motor?
The combination of soft iron core and coil is called an armature. It enhances the power of motor.
What is Fleming’s left hand rule?
Fleming’s left – hand rule states that if we stretch the thumb, middle finger and the index finger of the left hand in such a way that they make an angle of 90 degrees(Perpendicular to each other) and the conductor placed in the magnetic field experiences Magnetic force.
Do electric motors slow with age?
Yes. Brushless, electric motors do lose power over time.
Do electric motors lose efficiency over time?
RE: Motor efficiency degradation over time??
The motor efficiency does not fall because of aging. As for efficiency loss during rewinds, as a motor rewinder, I disagree with epete (may be for the first time). There are methods to strip windings without heating core. So the iron loss does not increase after rewind.
What is the maximum efficiency of an electric motor?
Most electric motors are designed to run at 50% to 100% of rated load. Maximum efficiency is usually near 75% of rated load. Thus, a 10-horsepower (hp) motor has an acceptable load range of 5 to 10 hp; peak efficiency is at 7.5 hp. A motor’s efficiency tends to decrease dramatically below about 50% load.
What is the price of electric motor?
Questions & Answers on Single Phase Electric Motor
|Power||Min Price||Max Price|
|10-100 KW||Rs 3500/Piece||Rs 8000/Piece|
|<10 KW||Rs 2000/Piece||Rs 8500/Piece|
What is electric motor explain with diagram?
1) When electric is passed into the rectangular coil, magnetic field is produced around the coil. 2)The magnetic field of horse shoe type interacts with the magnetic field on the coil and causes the coil to rotate continuously.
What are the 6 parts of an electric motor?
Six Key Components That Make Up Your Industrial Electric Motor
- 1) The Rotor. The rotor is the moving part of your electric motor. …
- 3) The Bearings. …
- 4) The Windings. …
- 5) The Air Gap. …
- 6) The Commutator. …
- What Do All of These Components Have in Common?