Quick Answer: What are the advantages and disadvantages of DC motor?

What are the advantages of DC motor?

Advantages of DC Motors

  • Good speed control. DC motors offer highly controllable speed. …
  • High torque. …
  • Seamless operation. …
  • Free from harmonics.

What is DC motor disadvantages?

Disadvantages Of DC Motor

DC motors have a high initial cost. Maintenance cost is high and increased operation due to the presence of brushes and commutator. Due to sparking at brush DC motors cannot operate in explosive and hazardous conditions.

What are the advantages and disadvantages of AC motors?

AC motor advantages include: lower power demand on start and minimal maintenance. Disadvantages of AC Motor AC will produce eddy currents due to the production of a back emf. – Because motors are generators that operate in reverse, they produce an emf just like generators do. …

What is DC drive advantages and disadvantages?

Advantages and Disadvantages of DC Drives

Advantages of DC drives include: High starting torque, easy installation, speed control over a wide range (both above and below the rated speed), quick starting, stopping, reversing, and acceleration, linear speed-torque curve and accurate step-less speed with constant torque.

INTERESTING:  How do you test a rear windshield wiper motor?

What are the disadvantages of DC?

Disadvantages of DC Transmission:

  • Due to commutation problem, electric power can’t be produced at High (DC) Voltage.
  • In High Voltage transmission, we cant step-up the level of DC Voltage (As Transformer won’t work on DC).
  • There is a limitation of DC switches and circuit breakers (and they are costly too).

What are advantages of DC?

DC power is significantly more energy efficient than AC power. DC motors and appliances have higher efficiency and power to size characteristics. DC-based lighting (LED) is as much as 75% more efficient than incandescent lighting.

What’s the advantages and disadvantages?

As nouns, the difference between disadvantage and advantage is that disadvantage is a weakness or undesirable characteristic; a con while the advantage is any condition, circumstance, opportunity, or means, particularly favorable to success, or any desired end.

What are the advantages and disadvantages of a DC shunt motor?

The installation of DC machines is expensive compare with other types of machines. Shunt motor is a constant speed motor, it would be disadvantages where it’s necessary to operate under variable speed. For the same current input, its starting torque is not a high as that of a DC series motor.

What are the disadvantages of AC and DC?

The peak value of A.C. is high and it is dangerous to use so better insulation is required. It attracts a person who touches it, unlike D.C. which gives a repelling shock. An A.C. is transmitted from the surface of the conductor and hence need several strands of thin wires insulated from each other.

INTERESTING:  What happens if you don't use a memory saver when changing car battery?

What are the disadvantages of AC motor?

The disadvantages of ac motor include the following. There are some problems t could arise like eddy current loss is high, less power factor, sparking within the brushes and there is a chance for an increase within armature & field winding reactance drop.

What is difference between DC motor and AC motor?

The most obvious difference is the type of current each motor turns into energy, alternating current in the case of AC motors, and direct current in the case of DC motors. AC motors are known for their increased power output and efficiency, while DC motors are prized for their speed control and output range.

What is better AC or DC?

Alternating current is cheaper to generate and has fewer energy losses than direct current when transmitting electricity over long distances. Although for very long distances (more than 1000 km), direct current can often be better.