A ferrous target __________ will be detected at the greatest sensing range by an inductive proximity sensor.
A. with the same cross-sectional area as the sensor head
B. with twice the cross-sectional area as the sensor head
C. neither a or b, they are the same
Answer: C
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Si un tanque cilíndrico tiene un diámetro de 16 pies (4,87 m) y la altura de las paredes laterales es de 20 pies (6,09 m), ¿cuál es la superficie en pies (metros) cuadrados de la pared lateral?
a. 32,6 pies cuadrados (9,93 m²) b. 32 pies cuadrados (9,75 m²) c. 1.004,8 pies cuadrados (306,26 m²) d. 960 pies cuadrados (276,15 m²)
List the primary elements and sensors used with temperature and pressure.
What will be an ideal response?
Why should liquid refrigerant NOT be introduced into an evacuated chiller?
A) The liquid can flash at subfreezing temperatures and freeze the water in the chiller tubes. B) The liquid refrigerant might boil and overheat the water in the chiller. C) Liquid charging is slow and chillers hold a lot of refrigerant. D) Adding refrigerant would ruin the vacuum.
When the SCR is connected in an AC circuit, the output is ____________________ current.
Fill in the blank(s) with the appropriate word(s).