Damper windings in a synchronous motor are used to __________.
A. reduce armature reaction
B. reduce overshoot when the motor stops
C. create a starting torque
D. provide good speed regulation
Answer: C
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Un método de acoplamiento de tuberías sin soldaduras o filtros es el uso de:
a. ganchos de alineación. b. uniones acampanadas. c. abrazaderas de bridas. d. arandelas para ensanchar uniones.
The three basic parts of a stuffing box are:
A. gland box, stuffing, and lip. B. packing chamber, lip, and nuts. C. packing rings, gland follower, and packing chamber. D. packing box, lip seal, and packing nut.
Identify at least eight examples of discrimination by employers against workers that workers have a right to complain about to OSHA.
What will be an ideal response?
In the above figure, after five time constants, the voltage at the top plate of the capacitor is __________.
A. determined by the voltage divider network of R12, the control pot, and the high-speed rheostat B. the potential at the wiper arm of the speed-control potentiometer C. both a and b