11.Which type of compressor is consisted of an impeller with an axial inlet and essentially radial
discharge, with passages formed by approximately radial vanes?
(A)Rotary axial compressor
(B)Multi-stage turbo-vane compressor
(C)Axial flow compressor
(D)Centrifugal compressor
12.The in an oil burner serves to break up the fuel into fine particles and inject them into the
furnace.
(A)air diffuser
(B)impeller
(C)atomizer
(D)air register
13.The volume displaced per cycle in the liquid end of a is constant, and is a function of the
outside diameter and stroke length of the liquid piston or plunger.
(A)diaphragm pump
(B)screw pump
(C)reciprocating pump
(D)gear pump
29.In a boiler, a tube through which steam and water passes from an upper waterwall header to the
steam drum is technically termed
(A)riser.
(B)feed tube.
(C)floor tube.
(D)reheater.
40.Which machinery is not generally included in the electrical power systems?
(A)AC generator
(B)Synchronization devices
(C)Transformer
(D)Prime mover of electrical generator