NEIEP 820 Exam Questions and
Answers3
Why are frequent inspections of line starter contractors necessary? - ANSWERS-High current
causes contact arcing.
During hydraulic pump motor starting which of the following is true? - ANSWERS-Line current is
high
In order to take advantage of wye-delta starting for a pump unit what is required? - ANSWERS-
Two line starters
Why is it important to only operate line starters with their covers in the proper location? -
ANSWERS-To prevent flashover between contacts
What is the operation quality of a soft start converter that prevents voltage sag and dimming of
lights in a building often associated with hydro pump starting? - ANSWERS-Starting current is
maintained at a preset rate.
What is a special requirement for hydraulic elevator systems that use a flexible line installed in
high pressure portions of the system? - ANSWERS-Replacement at six-year intervals
Of the following items which has the greatest effect on the leveling accuracy of a hydraulic
elevator? - ANSWERS-Oil temperature
Which of the following statements best describes a proper maintenance operation for hydraulic
pump belts? - ANSWERS-A downward force with one finger should deflect a belt about 1/64 of
an inch of belt span.
Answers3
Why are frequent inspections of line starter contractors necessary? - ANSWERS-High current
causes contact arcing.
During hydraulic pump motor starting which of the following is true? - ANSWERS-Line current is
high
In order to take advantage of wye-delta starting for a pump unit what is required? - ANSWERS-
Two line starters
Why is it important to only operate line starters with their covers in the proper location? -
ANSWERS-To prevent flashover between contacts
What is the operation quality of a soft start converter that prevents voltage sag and dimming of
lights in a building often associated with hydro pump starting? - ANSWERS-Starting current is
maintained at a preset rate.
What is a special requirement for hydraulic elevator systems that use a flexible line installed in
high pressure portions of the system? - ANSWERS-Replacement at six-year intervals
Of the following items which has the greatest effect on the leveling accuracy of a hydraulic
elevator? - ANSWERS-Oil temperature
Which of the following statements best describes a proper maintenance operation for hydraulic
pump belts? - ANSWERS-A downward force with one finger should deflect a belt about 1/64 of
an inch of belt span.
