Answer is:
High speed
Explanation:
The balancing of rotating and reciprocating parts of an engine is necessary when it runs at high speed.
Answer is:
To change direction of rotation of driven gear
Answer is:
Completely constrained motion
Explanation:
When the motion between a pair is limited to a definite direction irrespective of the direction of force applied, then the motion is said to be a completely constrained motion.
Answer is:
Fluid link
Explanation:
Fluid link is a link which has a fluid in the receptacle and the motion is transmitted through the fluid by pressure or compression. Example for Fluid Link are Hydraulic Crane, Jack, Brake, etc.