NCCER electrical Level 2 Module 2 Verified Guide
1. What voltage threshold requires guarding for exposed live parts? - Exposed live parts must be guarded if they operate at 50V or more between terminals.
2. Which type of equipment is most likely to utilize dynamic braking? - Forklifts often...
NCCER electrical Level 2 Module 2 Verified Guide 1. What voltage threshold requires guarding for exposed live parts? - Exposed live parts must be guarded if they operate at 50V or more between terminals . 2. Which type of equipment is most likely to utilize dynamic braking? - Forklifts often use dynamic braking. 3. At startup, what percentage of its full -load torque does a DC series motor generate? - A DC series motor develops 500% of its full -load torque at sta rtup. 4. What factor determines the speed of an AC motor with a fixed number of poles? - The speed is determined by the motor's frequency . 5. Which type of motor is preferred for applications needing high starting torque along with speed control? - A compound motor is used where high starting torque and speed control are necessary. 6. What is the synchronous speed of a four -pole, 60Hz induction motor? - It operates at a synchronous speed of 1,800 rpm . 7. How can slip in an induction motor be defined? - Slip is described as the difference between the synchronous speed and the rotor speed . 8. Which cla ss of motors operates on the principle of a rotating magnetic field? - Induction motors operate based on this principle. 9. What does horsepower measure regarding a motor? - It is used to rate the output capacity of a motor .
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