When both (the direction of field as well as that of armature current) are reversed the direction of rotation will not change. So in case of DC shunt motor, if the supply terminals are interchanged, there is no change in direction of rotation.
How do you reverse the direction of a DC shunt motor?
The direction of rotation of a DC shunt motor can be reversed by changing the polarity of either the armature coil or the field coil. You can reverse the direction by simply reversing the armature leads. The same can be done with a shunt motor and a compound motor.
What happen if the direction of current at the terminals of DC motor is reversed?
What happens if the direction of current at the terminals of a series motor is reversed? The motor would work, but the direction of rotation will not change, since the connection between the field and armature is not disturbed.
How can the direction of rotation of DC shunt motor?
The direction of armature rotation may be changed by reversing the direction of cur rent in either the field circuit or the armature circuit. For a motor with a simple shunt field circuit, it may be easier to reverse the field circuit lead.
How do you change the direction of a DC motor?
We can change the direction of DC motor 1) by changing the polarity of applied field voltage. 2) by changing the polarity of the applied voltage to the armature winding. 3) if we change both of the polarity of field and armature then the motor will rotate with previous direction…
Which DC motor has maximum self loading property?
Which DC motor has got maximum self-loading property? Explanation: A differentially compound DC motor, flux reduces so sharply at small increase in load at higher values of load.
What will be the effect on direction of rotation of a DC shunt motor if the supply terminals are reversed?
What will happen if the the supply terminals are reversed in case of a DC shunt motor? The motor will run in reverse direction. The motor will run at its normal speed in the same direction as before. The motor will stop.
Which DC motor is preferred for constant speed?
Explanation: Rotary compressor generally demand constant speed operation throughout the load. Sometimes, DC machines are not able to produce constant speed throughout the process hence, synchronous machine is used. 4.
What are the applications of a DC shunt motor?
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.
Why is the DC motor preferred over AC motor?
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.
How do you determine the polarity of a DC motor?
1 Answer. DC motors can usually run with either polarity but direction of rotation will be reversed. Read the data sheet or the label on the motor if you need to be sure it will turn the right direction on start. The armature draws more current than the field so needs a heavier wire.
How can the direction of rotation of a DC electric motor be changed quizlet?
How can the direction of rotation of a DC electric motor be changed?. Option A. reverse the electrical connections to either the field or armature windings. … reverse the electrical connections to either the field or armature windings.