Flashcards on Engineering- Mechanical/structural/pnuematic systems, created by AsimAli Rehman on 02/11/2019.
|
Created by AsimAli Rehman
about 6 years ago
|
|
Mechanical systems
What is a linkage and when does it do?
Draw a reverse motion linkage and describe how it works.
Draw a parallel motion linkage and describe how it works.
Draw a bell crank linkage and describe how it works.
Define mechanical advantage
What are the four main types of motion?
Using examples, define linear motion.
Using examples, define rotary motion.
Using examples, define reciprocating motion.
Using examples, define oscillating motion.
Use notes describe the function of a rack and pinion
Use notes and diagram to describe the function of a crank and slider.
Use notes and diagrams to describe the function of a cam and follower
Explain what is meant by the dwell of a follower
What types of follower are there?
What is the purpose of a simple gear train?
What affects the size of the output speed from a gear train?
How else can you calculate gear ratio?
Identify and compare an alternative to a gear train
Identify and compare alternative system to a chain and sprocket
Describe how pulley systems can be used to help lift heavy loads
How can friction be reduced on rotating shafts?
Compare plain bearings with rolling element bearings
Structural systems
Define static load
Define dynamic load
Define tensile stress
Define compressive stress
Describe with examples what is meant by a space frame structure.
Describe with examples what is meant by a monocoque structure.
Pneumatic systems
Compare pneumatic systems with hydraulic systems
What is a single acting cylinder?
Draw the circuit symbol for a SAC.
What is a double acting cylinder?
Draw the circuit symbol for a DAC.
How can a delay be created using pneumatics?
What is a 3-port valve?
What does a 3-port valve look like?
=Design a pneumatic circuit that allows a SAC to operate only when 2 separate 3-port valves are activated at the same time (same function as an AND gate)
What does a shuttle valve do?
Design a pneumatic circuit that allows a SAC to operate when any of 2 separate 3-port valves are activated (same function as an OR gate) – a shuttle valve will be needed
When are pneumatic systems used?
