# What is the disadvantage of Series DC motor?

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## What is the main disadvantage of a series motor?

Speed regulation in the series motor is quite poor. With the increase in the load speed of the machine decreases, DC shunt motor maintains almost constant speed from no load to full load.

## What is the main disadvantage of series wound generator?

The main disadvantage of series generators, Output voltage varies as the load varies The e. mf induced in the armature winding is constant with . time Inter pole winding is connected in series with main poles of d.c machine Series motor maintains a more constant speed under varying load.

Inexpensive controls for speed regulation Cogging at speeds of less than 300 rpm
Generally a low-cost motor option Significant power loss on full wave rectified voltage
Easily pairs with gear reducers High starting torque can damage reducers

## What are the advantages of DC shunt motor?

• The power supply of the DC motor is any way cheap.
• Shunt would motor able to runs at a predetermined speed.
• The speed of a dc shunt motor is sufficiently constant.
• Direct current machines can use for heavy industrial applications where the torque and speed wider range.
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## What is the disadvantages of DC drive?

The disadvantage of D.C. drives is the presence of a mechanical commutator which limits the maximum power rating and the speed. … The variable speed applications are dominated by D.C. drives because of lower cost, reliability ad simple control.

## Which motor is more powerful AC or DC?

AC motors are generally considered to be more powerful than DC motors because they can generate higher torque by using a more powerful current. However, DC motors are typically more efficient and make better use of their input energy.

## What is a series dc motor?

A series DC motor connects the armature and field windings in series with a common D.C. power source. The motor speed varies as a non-linear function of load torque and armature current; current is common to both the stator and rotor yielding current squared (I^2) behavior.

## Where is DC series motor used?

Series DC motors are generally used where high starting torque is required, and speed variations are possible. These types of direct connection motors are, for instance, used in the traction system, cranes, air compressors, vacuum cleaners, sewing machines, etc.

## Why are DC motors so expensive?

It is made out of copper and iron rather than aluminum and iron. The heavier rotor of the DC motor may require more expensive bearings. The rotor design is probably the most important factor in making the DC motor more expensive.