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RPM stands for revolutions per minute. This is calculated for different devices and can indicate how fast something is going. For a DC motor, the RPM is calculated by how many times the motor turns.
Wiki User
∙ 11y ago
Wiki User
∙ 8y ago. A 3v dc motor implies that the motor will run at its maximum speed at 3v. Only the voltage rating is not sufficient to determine rpm. However you can experimentally determine it using a tachometer. Rpms are often specified on the motor.
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Is the torque output of a DC motor directly proportional to armature current?
In dc shunt motor,base speed is 500 rpm and its field current is 17A, top speed is 1200 rpm and field current is 5.6 A.But 600 rpm it has reduced by 10A It is normal? How
Is there any application of Lenz law in DC motor?
yes lenz law states that every current opposes the reason which cause the generation of that current . it is very useful for considering back emf in dc motor. The lenz law also help us to determine the supply voltage of DC motor.
What is a DC shunt motor?
A DC shunt motor is a motor using DC supply with the the inductor connected parallel to the armature.
What are uses of bidirectional dc motor?
6V dc motor
Can DC series motor work on ac and DC and why?
A dc series motor can work on dc and ac because dc motors are totally reversible.
What resistance is needed to reduce 5V DC to 3V DC?
12v dc to 3v dc
Is the torque output of a DC motor directly proportional to armature current?
In dc shunt motor,base speed is 500 rpm and its field current is 17A, top speed is 1200 rpm and field current is 5.6 A.But 600 rpm it has reduced by 10A It is normal? How
Can you use an AC adaptor - 3v dc 800 ma to replace AC adaptor - 9 v DC 250 ma?
no, must be 3v
Specification of a dc motor?
DC Motor Specifications: 1.RPM 2.No-heap Speed 3.Slow down Torque 4.Most extreme Current
High power motor is AC or DC motor?
Either or Both - AC and or DC motor's are both rated by Horsepower / RPM / Torque, DC Motor's are more commonly used where you need to reverse the rotation on the fly (by a button push) - Crane's for example.
Convert 12v to 3v DC?
if you have 12v dc then you can use a 4 ohm resistor
Will it hurt a 4.8 volt DC electric motor if you put 4.5 or lower volts on it?
No. Varying a DC motor's voltage will vary its speed. If your motor is rated for 1000 rpm at 4.8 volts, running it on 4.5 volts should produce something in the area of 937 rpm. It shouldn't be a very noticeable difference, unless the voltage is much lower than the rating.
Where can superposition be used and not be used in a circuit or device?
most devices have physical restraints a permanent magnet dc motor a very linear device voltage yields rpm good example and bidirectional - voltage doesnt mean -rpm but it will turn the other way at the same speed if input voltage a yields x rpm a => x if input voltage b yields y rpm b => y superposition implies (A+B) =>( x+y) 12v dc motor volts rpm 0 0 .5 0 1 100 3 300 6 600 9 900 12 1200 so if a= 3v b= 6v a+b => 900 rpm the .5 up there is where with the small voltage we dont have enough torque to overcome friction and inertia at the low end no way to predict when the motor will start after we get it moving maybe we can run at 50rpm with .5V say for a we chose12V and for b we chose 12 v does this mean at 24v the motor will run 2400 rpm? or is there some reason besides superposition that we call this a 12V motor? most physical things have boundary conditions
Can you use a 9 V DC transformer to power a 3 V DC motor?
No, not unless there is a 115-volt power inverter to convert the 12 VDC to AC at the higher voltage. There are inexpensive inverters available to plug into a cigarette lighter outlet in a 12V vehicle system, but only for up to about 150 watts.
Why a dc series motor should never run at no load condition?
if you run the unloaded motor at max rpm the centrifugal forces will cause the motor to be totally destroyed so it is advisable to not to run it at max rpm it should be okay to run it till 50% of max rpm without loading it
Is there any application of Lenz law in DC motor?
yes lenz law states that every current opposes the reason which cause the generation of that current . it is very useful for considering back emf in dc motor. The lenz law also help us to determine the supply voltage of DC motor.
What is a DC shunt motor?
A DC shunt motor is a motor using DC supply with the the inductor connected parallel to the armature.
