Failure of the spigot collar in shearing. We know that area that resists shearing of the collar = π d2 t1 and shearing strength of the collar, = π d2 t1 τ Equating this to load (P) we have P = π d2 t1 τ From this equation, the thickness of spigot collar (t1) may be obtained. Figure 7: 8.
What is application of cotter joint Mcq?
A cotter joint is used to connect the two shafts which are either subjected to tensile or compressive axial force. It is not used to connect the shafts that are rotating or transmitting torque. e.g. Joint between the piston rod and the crosshead of a steam engine.
Why tolerances are given to the parts?
Explanation: Tolerances are provided to the parts because variations in the material properties introduce errors and production machines themselves have inherent inaccuracies. Another reason to introduce tolerance is that it is not possible to make perfect settings by operator so some tolerances are provided.
Which of the following are important part of knuckle joint?
The knuckle joint assembly consists of the following major components: Single eye. Double eye or fork. Knuckle pin.
Where is cotter joint used?
Cotter joint is used to connect two rods subjected to axial tensile or compressive loads. Cotter joint is widely used to connect the piston rod and cross head of the steam engine, so as a joint between the piston rod and the tailor pump rod, foundation bolt etc.
How socket and spigot joint is designed?
In a socket and spigot cotter joint, one end of the rods (say A) is provided with a socket type of end as shown in Fig. 12.1 and the other end of the other rod (say B) is inserted into a socket. The end of the rod which goes into a socket is also called spigot. A rectangular hole is made in the socket and spigot.
Why cotter is tapered?
Cotter is fitted in the tapered slot and remains in its position because of wedge action. … i) It is simple to remove the cotter and dismantle the joint parts. ii) Taper ensures tightness of the joint in operation and it prevents slackening of the parts. Generally the value of taper on cotter is 1 in 48 to 1 in 24.
Which part is not suitable for screw jack?
Which of the following does not form the important part of the screw jack? Explanation: There is no specific requirement of coupling in the screw jack. Explanation: At root of threads, the area parallel to direction of force is considered which is equal to circumference x thickness x no. of threads.
Which joint is used for rods in tension or compression?
Cotter-joints and pin joints are used for rods in tensile or compressive load. The cotter-joint does not permit any axial mis-alignment as it is the rigid-joint.
Is the simplest form of joint?
2. ___________________ is the simplest form of joint. Explanation: Lapped joint is form by putting the two Timber pieces one over the other from a short distance and the binding them together by means of iron straps or Stirrups.
Which steel is used for cotter joint?
According to the solved problem we can apply the force P = 50 KN on one of its end and other end is fixed. The material selected for cotter joint is plain carbon steel of Grade 30C8 which is having (Syt=400N/mm2), so that cotter joint will fail above (Syt=400N/mm2).
What is function of cotter joint?
The function of cotter in cotter joint is to connect rigidly two rods which transmit motion or force without rotation.
What is the function of knuckle joint?
A knuckle joint is a form of pin joint that’s used to transmit tension loads while allowing rotation in one plane. A knuckle joint is a type of pin joint used to join two components that are loaded in tension.
What are the applications of socket and spigot joints?
A cotter joint, also known as a socket and spigot joint, is a method of temporarily joining two coaxial rods. One rod is fitted with a spigot, which fits inside a socket on one end of the other rod. Slots in the socket and the spigot align so that a cotter can be inserted to lock the two rods together.
What is the material of socket and spigot joint?
Ductile iron pipe(spigot and socket joint) is a pipe made of ductile cast iron commonly used for potable water transmission and distribution. This type of pipe is a direct development of earlier cast iron pipe.
What is spigot and socket joint?
Spigot & Socket joint:- This
type of joint is commonly used in case of cast- iron-pipes. For the construction of this joint the spigot or normal end of one pipe is centred into the socket of the other pipe. Hemp yarn is then wrapped around the spigot, leaving unfilled the required depth of socket for lead.
What is a spigot joint?
A spigot joint is a type of pipe fitting that is inserted into another pipe fitting. The spigot end typically has the same outer diameter as the pipe and is usually fitted into another larger-diameter joint called a bell.
What is cotter and knuckle joint?
Cotter and knuckle joints are temporary fasteners used to connect two rods transmitting axial force. A cotter is a tapered piece of flat, mild steel connecting two coaxial rods. The cotter is inserted in a transverse direction to the rods.
Which of the following is NOT important part of knuckle joint?
Knuckle Joint can’t be used to connect two intersecting rods. Explanation: Knuckle Joint is used to connect two rods whose axes coincide or intersect and lie in a same plane. Explanation: Knuckle joint can’t be used for torque transmission. 3.
Which is an example of a knuckle joint?
Following are the knuckle joint applications: The joint between the tie rod joint of a roof truss. … Tie rod joint of the jib crane. Link of roller chain, bicycle chain, and Chain straps of watches.
Which of the following are important parts of joint?
Strong ligaments (tough, elastic bands of connective tissue) surround the joint to give support and limit the joint’s movement. Ligaments connect bones together. Tendons. Tendons (another type of tough connective tissue) on each side of a joint attach to muscles that control movement of the joint.
What are the 3 types of tolerances?
These are grouped into form tolerance, orientation tolerance, location tolerance, and run-out tolerance, which can be used to indicate all shapes.