_________________use an oscillating magnetic field to detect ferrous metal items.
A. Limit switches
B. Inductive proximity switches
C. Photoelectric proximity switches
D. Hall effect sensors
Answer: B
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Technician A says that highway diesel engines equipped with EGR must use an engine oil that meets the API CI-4 classification or later. Technician B says that CI-4 oil is lower in cost than CJ-4 and will be available until the 2010 EPA year. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B
What type of steam is steam that has been heated to a temperature above its saturated temperature?
A. Boiler steam B. Saturated steam C. Superheated steam D. Desuperheated steam
_____ govern the treatment and safety of employees
A) SDS rules B) ADA requirements C) ?RMD laws D) OSHA regulations
A discrete-time feedback system has a forward-path transfer function 
and a feedback-path transfer function 
For what range of real values of K is this system stable?