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21.3 Turning Effect on a Current-carrying Coil i ...
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ootd
outfit of the day
penyanyi luar negeri yang suka sepedaan?
selena gowes
who was your first love? (not parents)
tell name
the turning effect of the current-carrying coil in a d.c.motor can only be incresing the number of turns in the coil (true/false)
false
the function of a split-ring commutator in a d.c.motor is to reserve the direction of the current in the coil once every revolution, and thus reserve the direction in which the coil turns (true/false)
false
the turning effect of a current carrying coil in a magnetic field is applied in the d.c. motor(true or false)
true
in a simple dc motor, the direction of current in the motor coil is reserved every half-revolution to keep the coil turning in the same direction. which part of the motor enables this?
split link comutator
Give two ways you can reverse the direction of a basic dc motor?
Reverse the current, Reverse the magnetic field
Which rule can be used to work out which way a coil of wire rotates in a motor?
Fleming's left-hand rule
Name the effect that causes a coil of current-carrying wire in an electric motor to move (The electromagnetism effect-The motor effect -The magnetic effect)
the motor effect
Which causing The speed of rotation d.c. motor increase....(Gravity -use soft iron core-Current decrease-decrease of strength of magnetic field)
use soft iron core
3 factors that affect the turning effect forceon a current carrying coil in a d.c. motor
Inserting a soft iron core into the coil, Increasing the number of turn in the coil, Increasing the current in the coil
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