Hydraulics and Pneumatics Final UPDATED Exam Questions and CORRECT Answers
1 view 0 purchase
Course
Hydraulics and Pneumatics
Institution
Hydraulics And Pneumatics
Hydraulics and Pneumatics Final
UPDATED Exam Questions and
CORRECT Answers
The vertical arrow across the flow path of a flow control valve indicates _____ _____. (IHL2
3-1) - CORRECT ANSWER- pressure-compensated
The pressure-compensated flow control valve provides a constant flow rate by kee...
Hydraulics and Pneumatics Final
UPDATED Exam Questions and
CORRECT Answers
The vertical arrow across the flow path of a flow control valve indicates _____ _____. (IHL2
3-1) - CORRECT ANSWER- pressure-compensated
The pressure-compensated flow control valve provides a constant flow rate by keeping the
needle valve's upstream and downstream pressure _____ _____. (IHL2 3-2) - CORRECT
ANSWER- differential constant
The spool that controls the pressure drop across the opening of the pressure-compensated
flow control valve is called the _____. (IHL2 3-3) - CORRECT ANSWER- compensator
A flow control valve that does not have a reverse flow check is called a _____ valve. (IHL2
3-4) - CORRECT ANSWER- needle
To decrease the flow through a flow control valve, turn the adjustment in the _____ direction.
(IHL2 3-5) - CORRECT ANSWER- clockwise
The best method for synchronizing cylinders is by using _____. (IHL2 4-1) - CORRECT
ANSWER- mechanical yoke
When two cylinders of the same size are connected in parallel, the one with the lightest load
will move _____. (IHL2 4-2) - CORRECT ANSWER- first
Synchronizing cylinders by placing the cylinders in series is done by using _____. (IHL2 4-3)
- CORRECT ANSWER- double-rod cylinders
As cylinders are cycled, the piston seals will wear, causing _____. (IHL2 4-4) - CORRECT
ANSWER- leakage
, Hydraulic cylinders operating at the same speed, or finishing their strokes at the same time,
are said to be _____. (IHL2 4-5) - CORRECT ANSWER- synchronized
When the discharge of one cylinder drives another cylinder, the _____ is equal to the
combined loads of both cylinders. (IHL2 4-6) - CORRECT ANSWER- pressure
The pilot-operated relief valve is also called a _____ relief valve. (IHL3 1-1) - CORRECT
ANSWER- 2-stage
The performance advantage that a pilot-operated relief valve has over the direct-acting relief
valve is the shorter pressure span between _____ and _____. (IHL3 1-2) - CORRECT
ANSWER- cracking, full flow
Flow through a pilot-operated relief valve is blocked by a spring biased _____. (IHL3 1-3) -
CORRECT ANSWER- spool
A pilot-operated relief valve opens when the inlet pressure becomes greater than the upper
_____ pressure and the spool _____. (IHL3 1-4) - CORRECT ANSWER- chamber, spring
The "pilot" of a pilot-operated relief valve is a _____ valve. (IHL3 1-5) - CORRECT
ANSWER- direct-operated
The vent port on a relief valve is also called the _____ port. (IHL3 2-1) - CORRECT
ANSWER- RC
Pilot-operated relief valves are usually vented using _____ DCVs. (IHL3 2-2) - CORRECT
ANSWER- small
Opening the vent port of a pilot-operated relief valve will cause system pressure to _____ to
_____. (IHL3 2-3) - CORRECT ANSWER- drop, minimum
Dripping the pump pressure during machine idle times is called _____. (IHL3 2-4) -
CORRECT ANSWER- unloading
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 MGRADES. 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.
