Mechanical Engineering - Theory of machines - Discussion
Discussion Forum : Theory of machines - Section 9 (Q.No. 38)
38.
In a reciprocating steam engine, which of the following forms a kinematic link?
Discussion:
20 comments Page 1 of 2.
Hardik said:
5 years ago
Each part of a machine, which moves relative to some other part, is known as a kinematic link (or simply link) or element. In option (C) crankshaft and flywheel have no relative motion so they make a entity which have relative motion to other parts. So the answer (C) is correct.
Options A B D are an example of kinematic pairs that have relative motion between them.
Options A B D are an example of kinematic pairs that have relative motion between them.
(1)
Shadab khan said:
8 years ago
Answer: c.
Explanation: in a reciprocating steam engine, piston, piston rod and crosshead constitute one link ; connecting rod with big and small end bearings constitute a second link ; crank, crank shaft and flywheel a third link and the cylinder, engine frame and main bearings a fourth link.
Explanation: in a reciprocating steam engine, piston, piston rod and crosshead constitute one link ; connecting rod with big and small end bearings constitute a second link ; crank, crank shaft and flywheel a third link and the cylinder, engine frame and main bearings a fourth link.
Saggy said:
8 years ago
Each part of a machine which moves relative to some other part, is known as a kinematic link. The piston and cylinder in a steam engine, form a pair and the motion of the piston is limited to a definite direction relative to the cylinder irrespective of the direction of motion of the crank.
Shiva said:
3 years ago
In a reciprocating steam engine, piston, piston rod and crosshead constitute one link; connecting rod with big and small end bearings constitute a second link; crank, crankshaft and flywheel a third link and the cylinder, engine frame and main bearings a fourth link.
Tanuj said:
4 years ago
Each part of a machine, which moves relative to some other part, is known as a kinematic link or element. A link may consist of several parts, which are rigidly fastened together, so that they do not move relative to one another.
Abhishek said:
6 years ago
The motion of each part is related to one another is known as kinematics link. So, the motion of current and flywheel between the is relative to one another.
Hence, the option "C" is correct.
Hence, the option "C" is correct.
Gajanan Patel said:
7 years ago
Option A, B & D are example of kinematic pair because there's a relative motion between them. Flywheel is attached to crankshaft hence It's a kinematic link. So, C is the right answer.
BITAB BISWAS said:
7 years ago
There is no relative motion between the crankshaft and flywheel. So both of them form a single kinematic link. So, Option C is correct.
Arun said:
8 years ago
A is correct. Because flywheel remains to fix on crank shaft with help of key, and no has relative motion each other. C answer wrong.
Sachin said:
4 years ago
C is the correct option. To be a kinematic link, relative motion doesn't exist. That's why A, B and D is wrong.
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