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Worksheetscontrol system
Total questions: 10
Worksheet time: 5mins
DC motor converts
Electrical Energy into chemical energy
Electrical energy to Mechanical Energy
Mechanical Energy to Electrical Energy
None of the above
How do u relate the DC motor speed?
DC motor speed is directly proportional to armature voltage and inversely proportional to flux in field winding.
DC motor speed is directly inversely proportional to armature voltage and inversely proportional to flux in field winding.
DC motor speed is directly proportional to armature voltage and flux in field winding.
DC motor speed is directly proportional to armature voltage and proportional to flux in field winding.
How do u obtain desired speed of an armature controlled DC motor ?
by varying armature current
by varying the armature voltage
by varying emf
by varying transformer voltage
In DC motor, back
emf is directly proportional to speed ( say true/false )
TRUE
FALSE
Which factors not
affecting the speed of dc motors?
Flux
Current
Applied voltage.
Voltage across the armature
In which method ,
speed control will be done by changing the resistance?
Flux control method
Armature control method
Armature Voltage control method
In flux control
method, variable resistance is connected series with ____ winding
Shunt filed winding
Armature winding
Both armature and field winding
What does the Thumb indicates?
current direction
motion of conductor
direction of Field flux
The DC motor Works on the principle of
Mutual Induction
Electro magnetic Induction
Self Induction
all of the above
The Direction of force in DC motor is identified by
Fleming's Left hand Rule
Fleming's Right hand Rule
Lenz's Law
Faraday's law
