Which of the following pair is used for frequency converters ?
A) Squirrel cage induction motor and synchronous motor
B) Wound rotor induction motor and synchronous motor
C) Wound rotor induction motor and squirrel cage induction motor
Correct Answer:
Verified
Q1: The number of operations per hour in
Q2: In case of contactors, the duty in
Q3: In case of contactors the ratio of
Q4: A class I contactor should be mechanically
Q6: Belted wound rotor induction motors are preferred
Q7: The cooling time constant is usually
A)equal to
Q8: A motor of less than full load
Q9: Pole changing method of speed control is
Q10: To save the energy during braking
A)dynamic braking
Q11: To get speed higher than the base
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