When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

Theory of Machine
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

[(r + R) cosφ]/2

[(r² + R²) cosφ]/2

[(r + R) sinφ]/2

[(r² + R²) sinφ]/2

[(r + R) cosφ]/2

[(r² + R²) cosφ]/2

[(r + R) sinφ]/2

[(r² + R²) sinφ]/2

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Theory of Machine
A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by

W CE / 2CS

W CE / CS

W CS / 2CE

2 W CE / CS

W CE / 2CS

W CE / CS

W CS / 2CE

2 W CE / CS

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Theory of Machine
The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft)

2π qI

(1/2π). √(q/I)

2π. √(q/I)

1/2π

2π qI

(1/2π). √(q/I)

2π. √(q/I)

1/2π

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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

45 mm

95 mm

Slightly more than 45 mm

Slightly less than 45 mm

45 mm

95 mm

Slightly more than 45 mm

Slightly less than 45 mm

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Theory of Machine
The Coriolis component of acceleration acts

Along the sliding surface

At 45° to the sliding surface

Parallel to the sliding surface

Perpendicular to the sliding surface

Along the sliding surface

At 45° to the sliding surface

Parallel to the sliding surface

Perpendicular to the sliding surface

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Theory of Machine
When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the

Tension in the slack side of the belt

Sum of the tensions on the tight side and slack side of the belt

Tension in the tight side of the belt

Average tension of the tight side and slack side of the belt

Tension in the slack side of the belt

Sum of the tensions on the tight side and slack side of the belt

Tension in the tight side of the belt

Average tension of the tight side and slack side of the belt

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Theory of Machine

Theory of Machine A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by

Theory of Machine The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft)

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

Theory of Machine The Coriolis component of acceleration acts

Theory of Machine When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the

Theory of Machine
A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by

Theory of Machine
The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft)

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

Theory of Machine
The Coriolis component of acceleration acts

Theory of Machine
When the belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is equal to the