4-45. Which of the following indicators suggest(s)  improper  drainage  of  the distiller  condenser? 1. The  flash  chamber  gauge  line  is flooded 2. The first-effect tube nest vacuum  is  several  inches  of mercury 3. The plant does not produce the designed  output  when  the orifice is 5 psig 4. Each of the above 4-46. All sources of troubles in electrohydraulic  systems  fit  into one of three categories. Which of the following is NOT a category? 1. Hydraulic 2. Cooling 3.  Electrical 4.  Mechanical 4-47. What is the recommended method for locating  small  internal  leaks  in hydraulic  systems? 1. Use  magnetic  flux 2. Install  pressure  gauges 3. Listen for identifying sounds 4. Visually inspect the disassembled  parts 4-48. A popping or sputtering noise in a hydraulic  system  indicates  which  of the  following  conditions? 1. An oil leak in the pressure line 2. An air leak in the pressure line 3. An air leak in the suction line 4. An air pocket in the cylinder 4-49. Which  of  the  following  conditions should you suspect if a pounding or rattling  noise  occurs  in  a hydraulic  system? 1. Overtight adjustment of parts 2. Defective spring-activated valve 3. Improperly adjusted relief valve 4. Overloaded system or high-speed operation 4-50. Foreign matter in the oil of a hydraulic  transmission  usually causes  which  of  the  following  types of noise? 1. Rattling 2. Popping 3. Squealing 4. Grinding 4-51. When  a  squealing  or  squeaking  noise occurs in a hydraulic system, it is usually caused by which of the following  conditions? 1. Wiped bearings 2. Air pocket in the cylinder 3. Overtight packing around moving parts 4. Overloaded  system  during  high- speed  operation 4-52. What should you, as an Engineman, do upon discovering a faulty operation of a circuit breaker of a hydraulic  system? 1. Repair the circuit breaker 2. Check  for  excessive  binding  in the  electric  motor 3. Replace any damaged equipment in the plant 4. Report  the  condition  to  the Electrician's   Mate 4-53. If a hydraulic system is left to idle for a long period of time, which  of  the  following  difficulties might  you  expect  to  develop? 1. Misalignment of linkage 2. Accumulation of sludge 3. External leakage 4. Internal  leakage 4-54. What is the purpose of securing a hydraulic  system  for  1  hour  after filling it with clean oil? 1. To permit the settling of foreign  matter 2. To dissolve the sludge 3. To permit the venting of air 4. To dissolve corrosive deposits 31