Using the formula for speed, the___________ speed of a two-pole motor supplied by 60-hertz electrical energy is determined.
A)factory-preset
B)discrete
C)rated
D)synchronous

Question

Quizplus · Accepted Answer

The speed of a two-pole motor supplied with 60-hertz electrical energy is synchronous, meaning it rotates at a speed that is directly proportional to the frequency of the AC power source. The synchronous speed of a two-pole motor supplied with 60-hertz electrical energy is 3600 revolutions per minute (RPM). Therefore, the correct choice is D (synchronous). The synchronous speed of a motor is determined by the frequency of the electrical energy supplied to it. In the case of a two-pole motor supplied with 60-hertz energy, the synchronous speed can be calculated using the formula Synchronous Speed (in RPM) = 120 x Frequency (in Hz) / Number of Poles. Therefore, the correct answer is D) synchronous.

Using the Formula for Speed, The___________ Speed of a Two-Pole