Theory of Machi...

In a horizontal reciprocating engine, 4 kg of mass is to be balanced which is located at radius of 10 cm. If 50% of reciprocating unbalance is to be balanced by mass rotating at radius of 8 cm. What is value of rotating mass?

A engine is running at 800 rpm. The magnitude of maximum primary forces is observed to be 500 N. If crank and connecting rod length are found to be 200 mm and 800 mm respectively. What is magnitude of maximum secondary force (N)?

Consider a 2-cylinder locomotive engine having cranks perpendicular to each other. The plane gap between the cylinders is 0.7 m and radius of the crank is 0.3 m. The total mass of reciprocating part is 80 kg. If (2/3) of the reciprocating mass is to be balanced, then what is value of the swaying couple (in kN.m) if the crank angle is 60°. The engine speed is 300 rpm.

A horizontal engine has a crank pin radius of 300 mm. The mass of reciprocating parts is 250 kg and the connecting rod length is 1.2 m. If the cylinder bore is 0.5 m and the difference between driving and back pressures is 0.45 N/mm² (when crank has travelled 63⁰ from IDC) and the engine runs at 260 rpm. Then the piston effort is  __________ kN