3 BALANCING MACHINES-FIELD BALANCING OF DISCS AND ROTORS.

Related MCQs

• In case of partial balancing of locomotives, the maximum magnitude of the unbalanced force perpendicular to the line of stroke is called hammer blow and this has to be limited by proper choice of the balancing mass and its radial position.
• Balancing of single rotating mass by balancing masses in same plane and in different planes cannot take place.
• 5m and 70mm in diameter, the middle rotor is at a distance 1.5m from one end. Calculate the free torsional vibration frequency for a single node system in Hz if the mass moment of inertia of rotors in Kg- m2 are: 0.15, 0.3 and 0.09. C=84 kN/mm2
• 5m and 70mm in diameter, the middle rotor is at a distance 1.5m from one end. Calculate the free torsional vibration frequency for a two node system in Hz if the mass moment of inertia of rotors in Kg- m2 are: 0.15, 0.3 and 0.09. C=84 kN/mm2
• Which of the following statements is correct about the balancing of a mechanical system?
• Balancing of reciprocating masses is the process of providing the second mass in order to counteract the effect of the centrifugal force of the first mass.
• 1m then find the other balancing mass situated at a distance of 0.2m.
• 1m. One of the balancing mass is 30 Kg with RoR of 10cm.
• A vehicle suspension system consists of a spring and a damper. The stiffness of the spring is 3.6 kN/m and the damping constant of the damper is 400 Ns/m. If the mass is 50 kg, then the damping factor (d ) and damped natural frequency (fn), respectively, are
• If the crank and the connecting rod are 300 mm and 1 m long respectively and the crank rotates at a constant speed of 250 r.p.m., determine the crank angle at which the maximum velocity occurs is