1. Why does the direction of rotation change when the battery is reversed in the homopolar...
1. Why does the direction of rotation change when the battery is reversed in the homopolar motor?
a. When the battery is reversed, the direction of the current changes.
b. When the battery is reversed, there is no longer a net torque on the magnet and screw.
c. When the battery is reversed, the orientation of the magnetic field is also reversed.
Homework Answers
Correct answer is option (c)
When the battery is reversed, the orientation of the magnetic field is also reversed.
Comment in case any doubt please rate my answer....
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1. Why does the direction of rotation change when the battery is
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a coil around it. A battery feeds current into the coil and this
produces a magnetic field around the it and so the armature became
an electromagnet. The magnetic field interacts with the armature
that generate a rotation. The commutator can change the direction
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44. The direction of rotation of an induction motor depends on a. the frequency of the input voltage b. the strength of the magnetic field set up c. the phase sequence of the input supply lines and order in which they are connected to the stator windings d. whether the windings are connected in delta or star determines the speed of the rotating magnetic field a. the number of poles in the motor b. the frequency of the supply d...
A simple electric motor consists of a cylindrical armature with
a coil around it. A battery feeds current into the coil and this
produces a magnetic field around the it and so the armature became
an electromagnet. The magnetic field interacts with the armature
that generate a rotation. The commutator can change the direction
of the current every half-turn. This component can reverse the
north and the south poles of the armature and it create a rotation.
QUESTION
1....
The motor which lends itself to easiest way change the direction of rotation is a. Universal Motor b. Shunt Wound DC Motor. c. BPhase Motor. d. Shaded pole
Lab Homework - Force on a Current-Carrying Wire This homework will be due when you come to lab the week of November 4. A horseshoe magnet, with its north and south poles indicated, is shown in the figure below. Between the poles of the magnet is a wire perpendicular to the page, with current out of the page. a) Draw magnetic field lines for the magnet. Explain why you drew the field lines the way you did. b) If there...
1) Explain how practical electric motors are able to produce
torque always in the same direction through 360 degrees of rotation
of the motor. (See page 482 in your text, but note that there is an
error in the diagram in the Application: Electric Motors box. The
direction of rotation is incorrect. See if you can figure out
why.)
2) If you needed to get more torque from the winch on your
pickup and you had an extra 12 V...
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