The purpose of the overarm is:
A) Extend the spindle B) To hold large face mills
C) To hold the arbor support D) Strengthen the column
C
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What NEC chapter would you expect to find rules that apply to the installation of branch circuits, feeders, services, fuses, circuit breakers, and grounding?
a. Chapter 2, Wiring and Protection b. Chapter 3, Wiring Methods and Materials c. Chapter 4, Equipment for General Use d. Chapter 5, Special Occupancies
Deer and alligators may be grown for food
Indicate whether the statement is true or false
The lens equation says that if an object is placed at a distance p from a lens, and an image is formed at a distance q from the lens, then the focal length f satisfies the equation 1/f = 1/p + 1/q. Assume that p = 2.3 ± 0.2 cm and q = 3.1 ± 0.2 cm.
a. Estimate f, and find the uncertainty in the estimate. b. Which would provide a greater reduction in the uncertainty in f: reducing the uncertainty in p to 0.1 cm or reducing the uncertainty in q to 0.1 cm?
The __________ is considered a constant speed motor.
A. DC series B. DC shunt C. DC compound