5. What kind of pumps is applying the action of piston to force the liquid?
(A) Screw pumps
(B) Gear pumps
(C) Reciprocating pump
(D) Centrifugal pumps
10. 發現 二號主冷卻海水泵馬達電樞線圈燒毀A burnt ______ windings of electric motor of
No.2 main cooling sea water pump was discovered.
(A) circuit
(B) rotor
(C) armature
(D) pole
11. What system in boiler is to respond rapidly throughout the range of operation without a
fireman’s attention is of prime importance for a marine boiler.
(A) Blower
(B) Fuel-burning
(C) Water feeding
(D) Rolling
30. What are the speeds of the rotors that shall be carefully calculated in order to avoid the
resonance at normal running speeds?
(A) Exciting speeds
(B) Virtual speeds
(C) Critical speeds
(D) Damping speeds
8. The working fluid employed as the heat absorber in any refrigerating process is called as
__________.
(A) heating
(B) recycle
(C) refrigerant
(D) renew
9. What equipment is used to relieve excess pressure. It only fitted on top of boiler and
prevents pressure to excess in boiler?
(A) Quick closing valve
(B) Relief valve
(C) Globe valve
(D) Safety valve