Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be

95 mm
Slightly more than 45 mm
45 mm
Slightly less than 45 mm

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In a band and block brake, the ratio of tensions on tight side and slack side of the band is (where μ = Coefficient of friction between the blocks and the drum, θ = Semi-angle of each block subtending at the center of drum, and n = Number of blocks)

T₁/T₂ = (μ θ)n
T₁/T₂ = μ. θ. n
T₁/T₂ = [(1 - μ tanθ)/(1 + μ tanθ)]n
T₁/T₂ = [(1 + μ tanθ)/(1 - μ tanθ)]n

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In a four bar chain or quadric cycle chain

One is a turning pair and three are sliding pairs
Each of the four pairs is a turning pair
Two are turning pairs and two are sliding pairs
Three are turning pairs and one is a sliding pair

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

Radius of circular arc, cam speed, location of centre of circular arc and roller diameter
Total lift, centre of gravity of the cam and cam speed
Total lift, total angle of lift, minimum radius of cam and cam speed
Mass of cam follower linkage, spring stiffness and cam speed

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Theory of Machine