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WorksheetsAC AND DC MOTOR
Total questions: 11
Worksheet time: 6mins
How does a Stepper Motor move ?
A. Electrical Pulse
B. Continuous Applied Voltage
C. Alternates from A and B
Which of the following is not a component of a stepper motor?
A. Windings
B. Rotor and Stator
C. Commutator
D. Brush
E. Both C and D
Which of the following amounts of voltage will produce the weakest magnetic field in the electromagnet?
A. 1 A
B. 1.5 A
C. 2 A
D. 2.5 A
Which factors not
affecting the speed of dc motors?
Flux
Current
Applied voltage.
Voltage across the armature
The part of an electric motor that doesn't spin is called the...
armature
commutator
stator
bearings
In the image shown, the dark grey shapes are called:
Brushes
Armatures
Commutators
Windings
Main advantage of an ac motor as compared to a DC motor is
less maintenance
expensive
can work in any environment
controllability
The starting torque of a squirrel-cage induction motor is
Full-load torque
Slightly more than full-load torque
Low
Negligible
Which of the following motor has high starting torque?
Slip ring Induction motor
Squirrel cage induction motor
What type of current is flowing in the circuit ?
Alternating current
Direct current
Both
None
Which type of current is flowing ?
Alternating current
Direct current
Both
None
