A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance apart. The two masses form an equivalent dynamical system, if

Theory of Machine
A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance apart. The two masses form an equivalent dynamical system, if

All of these

The center of gravity of the two masses coincides with that of the body

The sum of mass moment of inertia of the masses about their center of gravity is equal to the mass moment of inertia of the body

The sum of the two masses is equal to the total mass of body

All of these

The center of gravity of the two masses coincides with that of the body

The sum of mass moment of inertia of the masses about their center of gravity is equal to the mass moment of inertia of the body

The sum of the two masses is equal to the total mass of body

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Theory of Machine
Bifilar suspension method is used to find the

Frequency of vibration of the body

Periodic time of the body

Moment of inertia of the body

Angular acceleration of the body

Frequency of vibration of the body

Periodic time of the body

Moment of inertia of the body

Angular acceleration of the body

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Theory of Machine
A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is

12,000 r.p.m.

5,367 r.p.m.

6,000 r.p.m.

9,360 r.p.m.

12,000 r.p.m.

5,367 r.p.m.

6,000 r.p.m.

9,360 r.p.m.

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Theory of Machine
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

1/2π. √(g/δ)

2π. √(δ/g)

1/2π. √(δ/g)

2π. √(g/δ)

1/2π. √(g/δ)

2π. √(δ/g)

1/2π. √(δ/g)

2π. √(g/δ)

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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

Slightly less than 45 mm

45 mm

95 mm

Slightly more than 45 mm

Slightly less than 45 mm

45 mm

95 mm

Slightly more than 45 mm

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Theory of Machine
Tangential acceleration direction is

Perpendicular to angular velocity

May be any one of these

Opposite to angular velocity

Along the angular velocity

Perpendicular to angular velocity

May be any one of these

Opposite to angular velocity

Along the angular velocity

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Theory of Machine

Theory of Machine A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance apart. The two masses form an equivalent dynamical system, if

Theory of Machine Bifilar suspension method is used to find the

Theory of Machine A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is

Theory of Machine One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

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 Tangential acceleration direction is

Theory of Machine
A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance apart. The two masses form an equivalent dynamical system, if

Theory of Machine
Bifilar suspension method is used to find the

Theory of Machine
A shaft has two heavy rotors mounted on it. The transverse natural frequencies, considering each of the rotor separately, are 100 Hz and 200 Hz respectively. The lowest critical speed is

Theory of Machine
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

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
Tangential acceleration direction is