For more Subjects
https://www.studymedia.in/fe/notes
, SME Unit VI – Mechanisms & Appliances
Contents : Part 1
1. Introduction to Mechanisms
2. Pump
3. Blower
4. Compressor
5. Springs
6. Gear Drive ; Belt-Pulley; Chain – sprocket
7. Levers
8. Flow controlled valve
Part 2 : Appliances
9. Applications of Compressors – Refrigerator , Water Cooler, Split AC units
10. Applications of Pumps – Water pump for overhead tanks, Water filter/ Purifier
11. Applications of Blowers – Vacuum cleaner , Kitchen Chimney
12. Applications of Motors – Fans, Exhaust Fans, Washing Machines
13. Applications of Springs – Door Closure, Door Locks
14. Applications of Gears – Wall Clocks, Watches, Printers
15. Applications of Belt- Pulley/ Chain- Sprockets – Photocopier, Bicycle, etc.
16. Applications of Valves – Water Taps
17. Applications of Levers – Door Latch, Brake Pedals, etc.
18. Applications of Electric / Solar Energy - Geyser, Solar Water Heater, Electric Iron
Part 3 : All Numerical for End Sem
1. Introduction to Mechanisms :
Kinematics : The branch of physics that deals with the characteristics of motion without
regard for the effects of forces or mass.
Kinematic Link : Each resistant body in a machine which moves relative to another resistant
body is called Kinematic link or element. A resistant body is which do not go under
deformation while transmitting the force. Kinematic links can be divided into three types :
• Rigid link & Resistant link : If there is absolutely no deformation in the link while
transmitting the motion, is called Rigid Link which is ideal and does not exit. Hence, A
Resistant body /link is defined which has negligible deformation during its motion. e.g All
machine parts
• Flexible link : In this type of link, there is partial deformation while transmitting the
motion. Belt drive is an example of flexible link.
• Fluid link : In this type of link, the motion is transmitted with the help of fluid pressure.
Hydraulic brake is an example of fluid link.
Kinematic Pair : When the two Kinematic links are joined to have relative motion
between them is known as Kinematic pair. The Kinematic pairs are classified as follows :
Other Subjects: https://www.studymedia.in/fe/notes
, 1. According to the Nature of Contact :
• Higher pair : When the two links have surface contact between them.
• Lower pair : When the two links have line or point contact between them.
2. According to Nature of Relative Motion :
• Sliding Pair : When one link slides relative to another link
• Turning Pair : When one link turns or revolve relative to another link
• Rolling Pair : When one link rolls over the other link ( either point or line contact ) – Ball
or Roller bearings.
• Screw Pair : If pair have turning as well as linear motion between them- nut & bolt
• Spherical Pair : When a spherical link turns inside a fixed link, it is known as spherical pair.
3. According to Nature of Constraint :
• Self closed Pair : When the two links are joined together mechanically
• Unclosed Pair : When the two links are connected either due to gravity or by
some external
forces. E.g. Cam & roller
Difference between Machine and Mechanism :
SNo. Machine Mechanism
1 If the system is used with the If the objective is to transfer or
objective of transforming mechanical transform motion without considering
energy, then it is called a machine. forces involved, the system is said to be
a mechanism.
2 Every machine has to transmit motion It is concerned with transfer of motion
because mechanical work ( force X only.
displacement ) is associated with the
motion, and thus makes use of
mechanisms.
3 A machine can use one or more than A mechanism is a single system to
one mechanism to perform the transfer or transform motion.
desired function, e.g. sewing machine
has several mechanisms.
4 Machine is created with one or many Mechanism is created by fixing one link
mechanisms and giving power as of a Kinematic Chain. Fixing different
input to get desired mechanical work links one at a time will create different
as an output. mechanisms from the same chain,
called Inversions.
Other Subjects: https://www.studymedia.in/fe/notes
https://www.studymedia.in/fe/notes
, SME Unit VI – Mechanisms & Appliances
Contents : Part 1
1. Introduction to Mechanisms
2. Pump
3. Blower
4. Compressor
5. Springs
6. Gear Drive ; Belt-Pulley; Chain – sprocket
7. Levers
8. Flow controlled valve
Part 2 : Appliances
9. Applications of Compressors – Refrigerator , Water Cooler, Split AC units
10. Applications of Pumps – Water pump for overhead tanks, Water filter/ Purifier
11. Applications of Blowers – Vacuum cleaner , Kitchen Chimney
12. Applications of Motors – Fans, Exhaust Fans, Washing Machines
13. Applications of Springs – Door Closure, Door Locks
14. Applications of Gears – Wall Clocks, Watches, Printers
15. Applications of Belt- Pulley/ Chain- Sprockets – Photocopier, Bicycle, etc.
16. Applications of Valves – Water Taps
17. Applications of Levers – Door Latch, Brake Pedals, etc.
18. Applications of Electric / Solar Energy - Geyser, Solar Water Heater, Electric Iron
Part 3 : All Numerical for End Sem
1. Introduction to Mechanisms :
Kinematics : The branch of physics that deals with the characteristics of motion without
regard for the effects of forces or mass.
Kinematic Link : Each resistant body in a machine which moves relative to another resistant
body is called Kinematic link or element. A resistant body is which do not go under
deformation while transmitting the force. Kinematic links can be divided into three types :
• Rigid link & Resistant link : If there is absolutely no deformation in the link while
transmitting the motion, is called Rigid Link which is ideal and does not exit. Hence, A
Resistant body /link is defined which has negligible deformation during its motion. e.g All
machine parts
• Flexible link : In this type of link, there is partial deformation while transmitting the
motion. Belt drive is an example of flexible link.
• Fluid link : In this type of link, the motion is transmitted with the help of fluid pressure.
Hydraulic brake is an example of fluid link.
Kinematic Pair : When the two Kinematic links are joined to have relative motion
between them is known as Kinematic pair. The Kinematic pairs are classified as follows :
Other Subjects: https://www.studymedia.in/fe/notes
, 1. According to the Nature of Contact :
• Higher pair : When the two links have surface contact between them.
• Lower pair : When the two links have line or point contact between them.
2. According to Nature of Relative Motion :
• Sliding Pair : When one link slides relative to another link
• Turning Pair : When one link turns or revolve relative to another link
• Rolling Pair : When one link rolls over the other link ( either point or line contact ) – Ball
or Roller bearings.
• Screw Pair : If pair have turning as well as linear motion between them- nut & bolt
• Spherical Pair : When a spherical link turns inside a fixed link, it is known as spherical pair.
3. According to Nature of Constraint :
• Self closed Pair : When the two links are joined together mechanically
• Unclosed Pair : When the two links are connected either due to gravity or by
some external
forces. E.g. Cam & roller
Difference between Machine and Mechanism :
SNo. Machine Mechanism
1 If the system is used with the If the objective is to transfer or
objective of transforming mechanical transform motion without considering
energy, then it is called a machine. forces involved, the system is said to be
a mechanism.
2 Every machine has to transmit motion It is concerned with transfer of motion
because mechanical work ( force X only.
displacement ) is associated with the
motion, and thus makes use of
mechanisms.
3 A machine can use one or more than A mechanism is a single system to
one mechanism to perform the transfer or transform motion.
desired function, e.g. sewing machine
has several mechanisms.
4 Machine is created with one or many Mechanism is created by fixing one link
mechanisms and giving power as of a Kinematic Chain. Fixing different
input to get desired mechanical work links one at a time will create different
as an output. mechanisms from the same chain,
called Inversions.
Other Subjects: https://www.studymedia.in/fe/notes
