Hydraulics Level 2 Midterm
Flashcard
•
Instructional Technology
•
Vocational training
•
Hard
Robert Vaughn
Used 1+ times
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24 questions
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1.
FLASHCARD QUESTION
Front
Three cylinders are moving in an LSPC hydraulic system. One is operating at 1000 psi, another is operating at 1200 psi, and the other is operating at 1400 psi. The unloading spring is adjusted to 200 psi. What is the pump outlet pressure?
Back
1600 psi
2.
FLASHCARD QUESTION
Front
A pre-spool pressure compensator valve senses ____.
Back
the highest signal pressure
3.
FLASHCARD QUESTION
Front
The term “pressure compensator” can reference all of the following, EXCEPT: pump control within a variable-displacement pump., type of pre-spool compensated DCV., type of post-spool pressure-compensated DCV., unloader valve
Back
unloader valve
4.
FLASHCARD QUESTION
Front
A technician is diagnosing a machine with a malfunctioning PC hydraulic system that is quieter than normal. The technician should search for a ____.
Back
blocked DCV
5.
FLASHCARD QUESTION
Front
The Caterpillar G-series scraper’s cushion hitch pump uses a ____ as a PC pump.
Back
pump flow-control spool adjusted until it cannot move
6.
FLASHCARD QUESTION
Front
If an open-center hydraulic system is running at a constant 27 gpm and operating at a constant 2875 psi, how much horsepower is it consuming?
Back
45 hp
7.
FLASHCARD QUESTION
Front
If an open-center hydraulic system is running at a constant 35 gpm and operating at a constant 2700 psi, how much horsepower is it consuming?
Back
55 hp
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