Theory of Machine
In order to give a complete secondary balance of a multi-cylinder inline engine,

Both (A) and (B)
None of these
The algebraic sum of the couples about any point in the plane of the secondary forces must be equal to zero
The algebraic sum of the secondary forces must be equal to zero

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines

The algebraic sum of the primary forces must be equal to zero
Both (A) and (B)
None of these
The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Two heavy rotating masses are connected by shafts of lengths l₁, l₂ and l₃ and the corresponding diameters are d₁, d₂ and d₃. This system is reduced to a torsionally equivalent system having uniform diameter d = d₁ of the shaft. The equivalent length of the shaft is

l = l₁ + l₂.(d₁/d₂)⁴ + l₃.(d₁/d₃)⁴
l = l₁ + l₂.(d₁/d₂)³ + l₂.(d₁/d₃)³
l₁ + l₂ + l₃
(l₁ + l₂ + l₃)/3

ANSWER DOWNLOAD EXAMIANS APP