What are the characteristics of DC series motor?
The characteristic curves of a DC series motor are those curves which show relationships between the following quantities.
- Torque and armature current (Ta/Ia characteristic).
- Speed and armature current (N/Ia characteristic)
- Speed and torque (N/Ta characteristic) It is also known as mechanical characteristic.
What are the applications of DC shunt motor depending on its characteristics?
The applications of shunt DC motor include the following.
- These motors are used wherever stable speed is required.
- This kind of DC motor can be used in Centrifugal Pumps, Lifts, Weaving Machine, Lathe Machines, Blowers, Fans, Conveyors, Spinning machines, etc.
How the characteristic of DC series motor differs from DC shunt motor?
A series motor respond by decreasing its speed with small increase in current for a given load torque. A shunt motor holds its speed nearly constant with large increase in input current for same amount of load torque.
What are motor characteristics?
Characteristic curve
| Continuous functioning area | S1 | |
|---|---|---|
| Nominal speed | ηN [Rpm] | Minimum speed to which the motor can run continuously |
| Nominal torque | MN [Nm ] | Maximum torque to which the motor can run continuously |
| Nominal current | In [A] | Maximum current to which the motor can run continuously |
| Stall torque | Ms [Nm] | Torque with blocked rotor |
What is the principle operation of DC motor?
When kept in a magnetic field, a current-carrying conductor gains torque and develops a tendency to move. In short, when electric fields and magnetic fields interact, a mechanical force arises. This is the principle on which the DC motors work.
What are the characteristics of motor?
Electrical characteristics like voltage, frequency and phase of power supply should be consistent with the motor nameplate rating….Electrical characteristics of the motor
- Voltage.
- Phase.
- Current (Amps)
- Hertz / Frequency.
- Horsepower.
- Speeds.
- Insulation Class.
- Service Factor.
What is load characteristics of DC shunt generator?
External or Load characteristic AC curve is showing the external characteristic of the shunt wound DC generators. It is showing the variation of terminal voltage with the load current. Ohmic drop due to armature resistance gives lesser terminal voltage the generated voltage.
What is difference between DC motor and DC shunt motor?
With a DC compound motor, the majority of the field is wound for a shunt field but with a few turns of series winding on top. The shunt is connected across the field supply and the series turns are connected in series with the armature. This provides a motor with a combination of the shunt and series characteristics.
Which of the following is the operating characteristics of DC generator?
Explanation: Armature characteristic is observed at constant terminal voltage for emf vs armature current. Explanation: Armature characteristic is also known as regulation characteristic. It is so called due to the fact that the difference in the terminal voltage helps to determine the voltage deviation.
What are mechanical characteristics of a motor?
The mechanical characteristics of motor are the torque-speed characteristics, because it reflect relation of torque T and speed n when motor operating.
Which is called as mechanical characteristics of DC motor?
Detailed Solution. Speed-torque characteristics is also known as mechanical characteristics of DC motor. Torque and armature current characteristic is also known as electrical characteristics of motor.
What operations can a DC site perform?
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What are internal and external characteristics of DC shunt generator?
AC curve is showing the external characteristic of the shunt wound DC generators. It is showing the variation of terminal voltage with the load current. Ohmic drop due to armature resistance gives lesser terminal voltage the generated voltage. That is why the curve lies below the internal characteristic curve.
What is droop characteristic?
Droop characteristics is a widely used method [28, 37–39]. Droop originates from the principle of power balance in synchronous generators. An imbalance between the input mechanical power and the output electric power causes a change in the rotor speed and electrical frequency.