The 3-phase squirrel-cage induction motor has a poorer starting torque than might be expected based on the line current being drawn, because the rotor current and stator currents are out of phase as a result of the high rotor frequency at starting. a) true b) false G-2). Which of the following is/are a general method of starting squirrel-cage motors? a) full voltage starting b) reduced voltage starting c) both a" and "b" d) neither "a" nor 'lb"
G-1). The 3-phase squirrel-cage induction motor has a poorer starting torque than might be expected based on the line current being drawn, because the rotor current and stator currents are out of phase as a result of the high rotor frequency at starting.
a) true b) false
G-2). Which of the following is/are a general method of starting squirrel-cage motors?
a) full voltage starting b) reduced voltage starting c) both a" and "b" d) neither "a" nor 'lb"
G-3). What is, if any, an objection to building a 3-phase squirrel-cage induction motor with high enough rotor resistance to provide good starting torque?
a) stator current would increase b) speed regulation would get poorer c) rotor current would increase d) none of the above
G-4). Which code letter(s) is given to the rotor of a 3-phase squirrel cage induction motor with the highest resistive value?
a) A b) B-E c) F-V d) none of the above
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