What are some of the advantages and disadvantages of DC motors?

What are the advantages of DC motors?

Advantages of DC Motors

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

What are the disadvantages of a DC motor?

Disadvantages of DC motors

  • High initial cost.
  • Increased operation and maintenance cost due to the presence of commutator and brush gear.
  • Cannot operate in explosive and hazard conditions due to sparking occur at brush (risk in commutation failure)

What are the disadvantages of a motor?

Induction Motor Disadvantages:

  • 3 phase induction motors have poor starting torque and high have in rush currents. …
  • Induction motors always operate under lagging power factor and during light load conditions they operate at very worst power factor (0.2 to 0.4 lagging).

What are the disadvantages of DC over AC?

Disadvantages of Direct Current Transmission System

  • Electric energy cannot be generated at high (DC) voltage based on the commutation problem.
  • The stepped-down process in the electric power transmission system is a vital factor.

What is the main disadvantage of a series motor?

The series motor has poor speed regulation. When the load speed of the machine increases, the DC shunt motor keeps its constant speed from no load to full load. The dc series motor’s Torque drops sharply when the speed increases.

IT\'S FUNNING:  Why do rotary engines need to be rebuilt?