Exam (elaborations)
Millwright (1).
- Course
- Institution
Exam of 12 pages for the course GPSTC Class 290 at GPSTC Class 290 (Millwright (1).)
[Show more]
Seller
Follow
lydiaomutho
Content preview
What are the 2 classes of hydraulics? - CORRECTANSWER-Hydrostatic & Hydrodynamic
What causes pressure drop in a hydraulic line? - CORRECT
ANSWER-Excessive Fluid Velocity
What causes aeration in a hydraulic pump? - CORRECT
ANSWER-Air in the suction line
What type of hydraulic cylinder is indicated in the circuit in Figure 1?
- CORRECT ANSWER-Adjustable cushion on extend only
What is Figure 2? - CORRECT ANSWER-Pilot Operated check
valve with a 5:1 line to pilot pressure ratio
What valve is internally piloted from the outlet port and externally
drained? - CORRECT ANSWER-Pressure reducing valve
What valve discharges at a preset pressure? - CORRECT
ANSWER-Pressure Relief Valve
What is the purpose of a pump? - CORRECT ANSWER-Create
Flow
, Which valve limits system pressure when using a fixed
displacement pump? - CORRECT ANSWER-Pressure Relief Valve
What is a symptom of a noisy pump? - CORRECT ANSWER-Low
fluid level in tank
Why can a pressure compensated variable displacement pump
work without a relief? - CORRECT ANSWER-It shifts to minimum
flow
Where is the main purpose pressure relief valve located in a
hydraulic system? - CORRECT ANSWER-Between Pump & control
valve
What instruments are used for testing a hydraulic system? -
CORRECT ANSWER-Tachometer, flowmeter & pressure guage
What are the brownish deposits found on valve spools? -
CORRECT ANSWER-varnish
what is the flare angle for hydraulic tubing that complies with JIC
standards - CORRECT ANSWER-37" included angle
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller lydiaomutho. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79271 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now