A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will

Theory of Machine
A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will

Become equal to R/2

Become equal to R/4

Become equal to 2R

Remain same as before

Become equal to R/2

Become equal to R/4

Become equal to 2R

Remain same as before

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Theory of Machine
The equation of free vibrations of a system is (d²x/dt²) +36 π²x, its natural frequency is

6 Hz

3 Hz

6π Hz

3π Hz

6 Hz

3 Hz

6π Hz

3π Hz

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Theory of Machine
A spring controlled governor is said to be unstable when the controlling force

Decreases as the radius of rotation increases

Increases as the radius of rotation decreases

Remains constant for all radii of rotation

Increases as the radius of rotation increases

Decreases as the radius of rotation increases

Increases as the radius of rotation decreases

Remains constant for all radii of rotation

Increases as the radius of rotation increases

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Theory of Machine
The Kutzbach criterion for determining the number of degrees of freedom (n) is (where l = number of links, j = number of joints and h = number of higher pairs)

n = 3(l - 1) - 3j - h

n = 2(l - 1) - 3j - h

n = 2(l - 1) - 2j - h

n = 3(l - 1) - 2j - h

n = 3(l - 1) - 3j - h

n = 2(l - 1) - 3j - h

n = 2(l - 1) - 2j - h

n = 3(l - 1) - 2j - h

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Theory of Machine
The velocity of sliding of meshing gear teeth is(Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point)

(ω₁/ω₂) y

(ω₁ × ω₂) y

(ω₁ + ω₂)/y

(ω₁ + ω₂) y

(ω₁/ω₂) y

(ω₁ × ω₂) y

(ω₁ + ω₂)/y

(ω₁ + ω₂) y

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Theory of Machine
The maximum or minimum value of the swaying couple is

± 2a (1 - c) m.ω².r

± (a/√2) (1 - c) m.ω².r

± a (1 - c) m.ω².r

± c.m.ω².r

± 2a (1 - c) m.ω².r

± (a/√2) (1 - c) m.ω².r

± a (1 - c) m.ω².r

± c.m.ω².r

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Theory of Machine

Theory of Machine The equation of free vibrations of a system is (d²x/dt²) +36 π²x, its natural frequency is

Theory of Machine A spring controlled governor is said to be unstable when the controlling force

Theory of Machine The Kutzbach criterion for determining the number of degrees of freedom (n) is (where l = number of links, j = number of joints and h = number of higher pairs)

Theory of Machine The velocity of sliding of meshing gear teeth is(Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point)

Theory of Machine The maximum or minimum value of the swaying couple is

Theory of Machine
The equation of free vibrations of a system is (d²x/dt²) +36 π²x, its natural frequency is

Theory of Machine
A spring controlled governor is said to be unstable when the controlling force

Theory of Machine
The Kutzbach criterion for determining the number of degrees of freedom (n) is (where l = number of links, j = number of joints and h = number of higher pairs)

Theory of Machine
The velocity of sliding of meshing gear teeth is(Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point)

Theory of Machine
The maximum or minimum value of the swaying couple is