Theory of Machine In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set to Reduce slip Reduce vibration Ensure proper alignment Ensure uniform loading Reduce slip Reduce vibration Ensure proper alignment Ensure uniform loading ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine To obviate axial thrust, following gear drive is used Double helical gears having opposite teeth Mutter gears Double helical gears having identical teeth Single helical gear in which one of the teeth of helix angle a is more Double helical gears having opposite teeth Mutter gears Double helical gears having identical teeth Single helical gear in which one of the teeth of helix angle a is more ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the Magnitude of the forces on journal Radius of journal Clearance between journal and bearing Angular velocity of journal Magnitude of the forces on journal Radius of journal Clearance between journal and bearing Angular velocity of journal ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when a = 0 and b is +ve a is +ve and b is also +ve a is +ve and b is -ve a is +ve and b = 0 a = 0 and b is +ve a is +ve and b is also +ve a is +ve and b is -ve a is +ve and b = 0 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In order to balance the reciprocating masses, None of these Primary forces and couples must be balanced Secondary forces and couples must be balanced Both (A) and (B) None of these Primary forces and couples must be balanced Secondary forces and couples must be balanced Both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A body is said to be under forced vibrations, when No external force acts on a body, after giving it an initial displacement None of these There is a reduction in amplitude after every cycle of vibration A body vibrates under the influence of external force No external force acts on a body, after giving it an initial displacement None of these There is a reduction in amplitude after every cycle of vibration A body vibrates under the influence of external force ANSWER DOWNLOAD EXAMIANS APP
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