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Unit 6
Push Buttons and Control Stations
| Question | Answer |
|---|---|
| why is it that normally open and normally closed contacts cannot be closed simultaneously? | they are physically made that way |
| a single-break control is a a. heavy-duty selector switch b. single-circuit push button c. standard-duty selector switch d. double-circuit push button | c. standard-duty selector switch |
| control stations may contain a. push buttons b. selector switches c. indicating lights d. all of these | d. all of these |
| a wobble stick is a. operated from any direction b. knob controlled c. paled controlled d. gloved operated | a. operated from any direction |
| common selector switches are a. one position b. two position c. three position d. two and three positions | d. two and three positions |
| most push buttons are a. momentary contact b. single contact c. double contact d. a combination | a. momentary contact |
| control station enclosures are a. general purpose b. explosion proof c. watertight d. all of these | d. all of these |
Created by:
aganotisi