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Would it be correct to say with a fixed field voltagethe speed of a shunt motor is proportional to its armature voltage?
With increasing torque load the armature tends to slow down; the motor draws more current to compensate, and if there is armature resistance the back emf generated by the armature falls to allow the increased current to flow, which causes the motor to settle at a lower speed.
The mechanical output power is the speed times the torque, and increasing the torque increases the power output provided the speed does not drop much.
What else can I help you with?
Would it be correct to say ' with a fixed field voltage the speed of a shunt motor is proportional to its armature voltage?
Yes, it is correct to say that with a fixed field voltage, the speed of a shunt motor is proportional to its armature voltage. This relationship arises because, in a shunt motor, the back EMF (electromotive force) is dependent on the speed and armature current. As the armature voltage increases, the armature current increases, leading to a higher speed until a new equilibrium is reached, assuming the field current remains constant.
How armature does affects the out put voltage in separately excited dc generator?
In a separately excited DC generator, the armature's performance directly influences the output voltage. When the armature rotates in the magnetic field, it induces voltage proportional to the speed of rotation and the strength of the magnetic field. If the armature carries a load or experiences increased resistance, it can lead to a voltage drop due to armature reaction and losses, thereby reducing the output voltage. Conversely, if the load decreases, the output voltage can rise, assuming the field strength remains constant.
What is armature voltage?
critical.
Which the effect of the increase of the armature voltage on the speed of a direct-current separately excited motor in case of constant load?
Increasing the armature voltage would increase the speed. In a separately excited dc motor the speed adjusts so that the back emf generated by the armature is a little less than the supply voltage. The difference, divided by the resistance, gives the current drawn, which is also proportional to the shaft torque supplied to the load.
Did the armature voltage reverse its polarity?
yes
Would it be correct to say ' with a fixed field voltage the speed of a shunt motor is proportional to its armature voltage?
Yes, it is correct to say that with a fixed field voltage, the speed of a shunt motor is proportional to its armature voltage. This relationship arises because, in a shunt motor, the back EMF (electromotive force) is dependent on the speed and armature current. As the armature voltage increases, the armature current increases, leading to a higher speed until a new equilibrium is reached, assuming the field current remains constant.
Does the motor speed double when the armature voltage is doubled?
Yes, because as the armature voltage increases, the speed also increases so they are proportional.
How armature does affects the out put voltage in separately excited dc generator?
In a separately excited DC generator, the armature's performance directly influences the output voltage. When the armature rotates in the magnetic field, it induces voltage proportional to the speed of rotation and the strength of the magnetic field. If the armature carries a load or experiences increased resistance, it can lead to a voltage drop due to armature reaction and losses, thereby reducing the output voltage. Conversely, if the load decreases, the output voltage can rise, assuming the field strength remains constant.
What is the use of magnetization curve of DC shunt generator?
The armature voltage is a critical parameter in the determination of performance characteristics for the DC machine. The armature voltage has been shown to be proportional to the magnetic flux density per pole and the armature speed. Thus, the armature voltage will also exhibit nonlinear behavior when saturation occurs. The analysis of DC machine performance typically requires that the characteristics of the armature voltage saturation be known. This information is typically provided in a plot of the armature voltage vs. field current (magnetization curve) for a given operating speed
What is more is correct v is proportional to i or i is proportional to v?
The induced current is proportional to applied voltage. i is proportional to v Or you might say, "A current source drives a fixed current through a circuit. Then the voltage developed is proportional to i" . Both forms are equally correct. Voltage sources are more common than current sources so the first form is more common.
What is armature voltage?
critical.
Would a DC motor turn if only the armature were supplied DC voltage?
if there are magnets on the stator and the commutator is phased properly this is known as a permanent magnet dc motor the starting torque is dependent on armature current and the strength of the magnet the speed is directly proportional to the armature voltage a shunt motor needs the field energized for starting. more field more starting torque
What is the function of field winding in DC generator?
The motor needs the current and magnetic flux to create motion The magnetic field is created by field winding where as armature carries the current resulting into the rotation of armature
Which the effect of the increase of the armature voltage on the speed of a direct-current separately excited motor in case of constant load?
Increasing the armature voltage would increase the speed. In a separately excited dc motor the speed adjusts so that the back emf generated by the armature is a little less than the supply voltage. The difference, divided by the resistance, gives the current drawn, which is also proportional to the shaft torque supplied to the load.
Is it possible to reduce speed of shunt motor?
For any dc shunt motor the speed is directly proportional to the armature voltage. hence if you vary the armature voltage by any means( using thyristor ) or static converters using conventional method( ward Leonardo system) surely you can increase or decrease the speed of the shunt motor. Manjunatha M
Did the armature voltage reverse its polarity?
yes
How does a voltage regulator regulate the voltage output of an ac generator?
Generator output is controlled by voltage feedback to the voltage regulator which senses voltage drop or rise and regulates the current being sent to the armature. This rise and fall of the armature current governs the generators output voltage.
