Virtual Labs

Which of the following statements are associated with complete dynamic balancing of rotating systems?
A. The system is automatically statically balanced.
B .Resultant couple due to all inertia forces is zero.
C. Centre of masses of the system lies on the axis of rotation.
D. Support reactions due to forces are zero but not due to couples.

a: A, C and D only b: A, B, C and D c: B, C and D only d: A, B and C only

An important assumption made by this technique of calculating balancing of masses is that:

a: vibration amplitude is inversely proportional to the force producing the vibration b: vibration amplitude is equal to the force producing the vibration c: vibration amplitude is proportional to the force producing the vibration d: None of the above

Rotation in different planes require the balancing of-

a: Force b: Moment c: Both d: None of these

Gear box is an example of-

a: Balancing in one plane b: Balancing in different plane c: Reciprocating balancing d: None of these

In balancing of multiple mass in multiple plane, the net force and moment should be-

a: Net force > net moment b: Net moment > net force c: Net force = 0, net moment ≠ 0 d: Net force = 0, net moment = 0

Community Links Sakshat Portal Outreach Portal FAQ: Virtual Labs

AGPL 3.0 & Creative Commons (CC BY-NC-SA 4.0)