Question

I have a 9V DC motor with current of 135mA (no load) and 1.20A (stalled). What...

I have a 9V DC motor with current of 135mA (no load) and 1.20A (stalled). What potentiometer should I use?

Science   Advanced-Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #2

Hey there!

Ok, so the resistance range of the potentiometer has to be figured out.

The answer can be figured out by Ohm's law, which is V=IR . Hence R = V/I. Substituting the value of I on bothe cases will give you the range of the potentiometer to be selected.

For Voltage of V = 9V and a current of I = 135 mA = 135 x 10-3 A ,

​​​​​​

Hence a potentiometer of range 7.5 Ohms - 67 Ohms is apt. (A potentiometer with 0 to 100 Ohms as a standard value practically.)

I hope the solution helps... Feel free to comment and discuss further... Cheers :)

answered by: anonymous
0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
I have a project which is a simple dc motor, and I did 10 turns winding...
I have a project which is a simple dc motor, and I did 10 turns winding and use 9v battery, and magnetic bar. could you tell me what calculations related that I can do like torque and speed and other related possible? Or can you tell me what I can reach to by using these specifications? thanks
The full-load armature current of a 5 hp, 150 V shunt dc motor is 30 A....
The full-load armature current of a 5 hp, 150 V shunt dc motor is 30 A. The field (shunt) resistance and the armature resistance of the motor are ????F = 125 ? and ???????? = 0.15, respectively. At a random speed of 1800 rpm magnetization curve of the motor has measured and is shown in the table below. ????0 (V) armature voltage 10 90 110 140 170 185 ???????? (A) field (shunt) current 0 0.82 1 1.2 1.7 2.88 Calculate...
Question 2 The full-load armature current of a 5 hp, 150 V shunt dc motor is...
Question 2 The full-load armature current of a 5 hp, 150 V shunt dc motor is 30 A. The field (shunt) resistance and the armature resistance of the motor are ????F=125 ? and ????????=0.15, respectively. At a random speed of 1800 rpm magnetization curve of the motor has measured and is shown in the table below. EO(V) armature voltage 10 90 110 140 170 185 IF (A) field (shunt) current 0 0.82 1 1.2 1.7 2.88 Calculate the following: a....
in a DC MOTOR, how does the dead zone get effected by the load( with load...
in a DC MOTOR, how does the dead zone get effected by the load( with load and without load). gives your explainations
Electric Machines Q2: A magnetization curve of a DC motor current yields an internally generated voltage...
Electric Machines Q2: A magnetization curve of a DC motor current yields an internally generated voltage of 175 Volts is produced by this current at 1800 r/min. What is the rotational speed of the motor under no-load conditions if the terminal voltage is 150V? Correct answer (need to see work): 1,543 r/min
A dc series motor is connected to a constant-toque load, which may be considered to require...
A dc series motor is connected to a constant-toque load, which may be considered to require a constant electromagnetic torque regardless of motor speed. Neglect the voltage drops due to the armature and series-field resistances, the armature reaction, and the effects of saturation. (a) By what percent is the motor speed changed wgen the line voltage is reduced from 230 V to 200 V? (b) Repeat (a), assuming a shunt motor. (c) State briefly what effects saturation might have on...
you are given a motor operated by a 9V battery. The stall torque for this motor...
you are given a motor operated by a 9V battery. The stall torque for this motor is  Ts = 0.04 N-m, and its no-load speed, wnl = 2200  rpm. You are given a 10-tooth gear, a 20-tooth gear, and a bunch of axles (shafts). Draw below how will you connect the gears and shafts so that output shaft has a higher torque than the motor shaft. Label in your diagram, which gear is the input (driver), and which is the output (driven).   ...
Design of DC Motor Starter In order for a dc motor to function properly, it must...
Design of DC Motor Starter In order for a dc motor to function properly, it must be protected from physical damage during the starting period. At starting conditions, the motor is not rotating, and armature generated voltage EA = 0 V. Since the internal resistance of a normal DC motor is very low, a very high current flows. It is possible for a motor to be severely damaged by such currents, even if they last for only a moment. A...
Design of DC Motor Starter In order for a dc motor to function properly, it must...
Design of DC Motor Starter In order for a dc motor to function properly, it must be protected from physical damage during the starting period. At starting conditions, the motor is not rotating, and armature generated voltage EA = 0 V. Since the internal resistance of a normal DC motor is very low, a very high current flows. It is possible for a motor to be severely damaged by such currents, even if they last for only a moment. A...
You must design a power transmission system to connect a DC motor to its load. The...
You must design a power transmission system to connect a DC motor to its load. The motor is given in the motor catalogue as a BM1400 motor. You must create a transmission that will connect to this motor and have a two stage gear reduction (i.e. there must be two sets of gear reduction) with a total drive reduction of 10:1. The final output shaft must be at 90 deg from the input shaft. You must specify all the components...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT