Nccer electrical Level 2 Module 2
Nccer electrical Level 2 Module 2 Any exposed live parts must be guarded if they are operating at - 50V or more between terminals Which of the following are most likely to use dynamic braking? - Forklifts In a DC series motor, how much of its full-load torque is developed at starting? - 500% For a given number of poles, which of the following determines the speed of an AC motor? - Frequency Which of the following motors is used where the required starting torque is high and speed control is desirable - compound the synchronous speed at which a four-pole, 60Hz induction motor operates is - 1,800 rpm slip is best described as . . . - The difference between the synchronous speed and the speed of the rotor in an induction motor Which of the following motor operate on the principle of a rotating magnetic field? - induction motors horsepower is used to rate the - output capacity of a motor How many motor designs does NEMA designate - 5 In a split-phase motor, how much greater is the starting current when compared to the full-load current? - 6 to 8 times The capacitor-start motor is the single-phase motor type that has the - highest starting torque
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