P-1).. Which of the following determine the amount of torque produced by a single-phase split-phase motor? a) The strength of the magnetic field of the stator b) The strength of the magnetic field of the rotor c) The phase angle difference between the current in the start winding and the current in the run winding d) all of the above
P-1).. Which of the following determine the amount of torque produced by a single-phase split-phase motor?
a) The strength of the magnetic field of the stator b) The strength of the magnetic field of the rotor c) The phase angle difference between the current in the start winding and the current in the run winding d) all of the above
P-2). The phase angle difference between the currents in the start winding and run winding of a single-phase split-phase motor is typically 90 degrees.
a) true b) false
P-3). A centrifugal switch is used to disconnect the________ winding of a non-hermetically sealed single-phase split-phase motor at approximately 75% of rated speed.
a) run b) start c) either "a" or "b" d) neither "a" nor "b"
P-4). Where an internal centrifugal switch cannot be used, an external______ relay can be used to perform the same function in a single-phase split-phase motor.
a) hot-wire b) current c) solid-state starting d) all of the above
Step by step
Solved in 2 steps
