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WorksheetsPMDC MOTOR,BRUSH LESS DC MOTOR AND STEPPER MOTOR
Total questions: 15
Worksheet time: 8mins
Inside the stator, three hall ICs are arranged as ____________
electrical elements
magnetic elements
electromagnetical elements
The phase difference of the output signal from each hall IC will be _________ apart for every rotation of the rotor.
120 degrees
180 degrees
90 degrees
The ____________ are connected to the motor winding and the ON/OFF state of the switching element determines which coil of the stator is energized
switching elements
mechanical elements
electronic elements
The switching elements are connected to the motor winding and the ON/OFF state of the switching element determines which coil of the stator is energized and in which direction the current will flow, that is, which coil becomes a ______________
N pole
S pole
N pole or S pole
The position of the __________ is detected by the hall IC, and an appropriate switching element is turned ON or OFF
magnetic pole
stator’s magnetic pole
rotor’s magnetic pole
In BLDC motor, Electronic commutation based on __________
Hall position sensors
Temperature sensors
ecoders
Position control of BLDC motor forms outer ________loop and Inner ____________loop
position,voltage
position,current
voltage,current
In a closed loop speed control, the reference current generator, produces the three phase reference current by comparing _______________
rotor position
stator position
shaft position
How does a Stepper Motor move ?
A. Electrical Pulse
B. Continuous Applied Voltage
C. Alternates from A and B
A pulse can be produce by which means ?
A. Microprocessor
B. Timing Logic
C. Toggle Switch
D. All of the above
Which of the following is not a type of stepper motor?
A. Variable Reluctance
B. Hybrid
C. Magnetic
D. Lead-Screw
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
The rotational speed of a given stepper motor is determined solely by the
(a) shaft load
(b) step pulse frequency
(c) polarity of stator current
(d) magnitude of stator current.
THE WORKING PRINCIPLE OF DC MOTOR IS---------
MUTUAL INDUCTION
FLEMING'S RIGHT HAND
LORENTZ LAW
WHAT IS BACK EMF?
THE VOLTAGE OPPOSES THE SUPPLY VOLTAGE
THE VOLTAGE DOES NOT OPPOSE THE SUPPLY VOLTAGE
SUPPLY VOLTAGE
