Theory of Machine
Which one of the following is an exact straight line mechanism using lower pairs?

Robert’s mechanism
Peaucellier’s mechanism
Grasshopper mechanism
Watt’s mechanism

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
A system of masses rotating in different parallel planes is in dynamic balance if the

Resultant force is equal to zero
Resultant couple is equal to zero
Resultant force and resultant couple are both equal to zero
Resultant force is numerically equal to the resultant couple, but neither of them need necessarily be zero

ANSWER DOWNLOAD EXAMIANS APP