Why are the D.C. motors preferred for traction applications ?
A) Torque and speed are inversely proportional to armature current
B) Torque is proportional to armature current
C) Torque is proportional to square root of armature current
D) The speed is inversely proportional to the torque and the torque is proportional to square of armature current
Correct Answer:
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Q9: The armature voltage control of D.C. motor
Q10: If a D.C. motor designed for 40°C
Q11: If the terminals of armature of D.C.
Q12: Which of the following motors one will
Q13: If the speed of a D.C. shunt
Q15: Which of the following motors is usually
Q16: Which of the following motors is most
Q17: Which motor should not be started on
Q18: Ward-Leonard control is basically a
A)voltage control method
B)field
Q19: For constant torque drive which speed control
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