The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Theory of Machine
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Effects of unbalances are directly proportional to the speed

Unbalanced couples are caused only at higher speeds

Effects of unbalances are proportional to the square of the speed

Unbalanced forces are not dangerous at higher speeds

Effects of unbalances are directly proportional to the speed

Unbalanced couples are caused only at higher speeds

Effects of unbalances are proportional to the square of the speed

Unbalanced forces are not dangerous at higher speeds

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Theory of Machine
The direction of Coriolis component of acceleration is the direction

Along tangential acceleration

Along perpendicular to angular velocity

Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link

Along the centripetal acceleration

Along tangential acceleration

Along perpendicular to angular velocity

Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link

Along the centripetal acceleration

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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

Slightly more than 45 mm

95 mm

Slightly less than 45 mm

45 mm

Slightly more than 45 mm

95 mm

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Theory of Machine
A body will begin to move down an inclined plane, if the angle of inclination of the plane is ________ the angle of friction.

Less than

Greater than

None of these

Equal to

Less than

Greater than

None of these

Equal to

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Theory of Machine
In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.

Independent of

Equal to

Directly proportional to

Inversely proportional to

Independent of

Equal to

Directly proportional to

Inversely proportional to

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

One is a turning pair and three are sliding pairs

Two are turning pairs and two are sliding pairs

Three are turning pairs and one is a sliding pair

Each of the four pairs is a turning pair

One is a turning pair and three are sliding pairs

Two are turning pairs and two are sliding pairs

Three are turning pairs and one is a sliding pair

Each of the four pairs is a turning pair

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Theory of Machine

Theory of Machine The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Theory of Machine The direction of Coriolis component of acceleration is the direction

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 A body will begin to move down an inclined plane, if the angle of inclination of the plane is ________ the angle of friction.

Theory of Machine In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.

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

Theory of Machine
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Theory of Machine
The direction of Coriolis component of acceleration is the direction

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
A body will begin to move down an inclined plane, if the angle of inclination of the plane is ________ the angle of friction.

Theory of Machine
In steady state forced vibrations, the amplitude of vibrations at resonance is __________ damping coefficient.

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