Worksheetsdc motor
Total questions: 10
Worksheet time: 5mins
THE WORKING PRINCIPLE OF DC MOTOR IS---------
MUTUAL INDUCTION
FLEMING'S RIGHT HAND
LORENTZ LAW
In the image shown, the dark grey shapes are called:
Brushes
Armatures
Commutators
Windings
The part of an electric motor that doesn't spin is called the...
armature
commutator
stator
bearings
Which factors not
affecting the speed of dc motors?
Flux
Current
Applied voltage.
Voltage across the armature
GENERATOR CONVERTS ------ ENERGY INTO ----- ENERGY
MECHANICAL, ELECTRICAL
ELECTRICAL, MECHANICAL
POTENTIAL,KINETIC
BACK EMF OF DC MOTOR IS----------
Eb = PΦNZ / 60A
EB = PΦN / 60AZ
EB = PΦZ / 120AN
WHAT IS BACK EMF?
THE VOLTAGE OPPOSES THE SUPPLY VOLTAGE
THE VOLTAGE DOES NOT OPPOSE THE SUPPLY VOLTAGE
SUPPLY VOLTAGE
WHAT IS TORQUE?
TWISTING FORCE
KINETIC FORCE
MAGNETIC FORCE
WHICH DEVICE IS CONSTRUCTION-WISE THE SAME AS DC MOTOR?
DC GENERATOR
TRANSFORMER
INDUCTOR
THE WORKING PRINCIPLE OF DC MOTOR IS---------
MUTUAL INDUCTION
FLEMING'S RIGHT HAND
LORENTZ LAW
