35.Which technical term is referred to as the zero-potential reference of an electric/electronic system?
(A)Penetration
(B)Filtering
(C)Shielding
(D)Ground
9.What is a corrosion-control method that is sometimes used to provide partial or complete control
of electrochemical corrosion problems? One method involves the installation of sacrificial anodes that are electrically coupled to the metal to be protected. (A)Exfoliation (B)Delamination (C) Cathodic protection (D)Dealuminization
25.Current changing in direction with rising and falling amplitude is .
(A)AC (Alternating Current) (B)DC (Direct Current) (C)generator (D)fresh water generator
8. One kind of equipment is applied for automatic discharge of condensate from
piping, heaters and other equipment. Which equipment is above description?
(A) Heater
(B) Trap
(C) Strainer
(D) Filter