The steering of a ship means

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The steering of a ship means

A. Movement of a complete ship up and down in vertical plane about transverse axis

B. Turning of a complete ship in a curve towards right or left, while it moves forward

C. Rolling of a complete ship sideways

D. None of the above

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The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank)

A. m.ω².r sinθ

B. m.ω².r cosθ

C. m.ω².r (sin 2θ/n)

D. m.ω².r (cos 2θ/n)

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The critical speed of a shaft depends upon its

A. Mass

B. Stiffness

C. Mass and stiffness

D. Stiffness and eccentricity

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The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

A. Parallel to each other

B. Perpendicular to each other

C. Inclined at 45°

D. Opposite to each other

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The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

A. Less

B. More

C. Same

D. None of these

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In gears, interference takes place when

A. The tip of a tooth of a mating gear digs into the portion between base and root circles

B. Gears do not move smoothly in the absence of lubrication

C. Pitch of the gears is not same

D. Gear teeth are undercut

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In a steam engine, the link constitutes a

A. Piston, piston rod and crosshead

B. Connecting rod with big and small end brasses, caps and bolts

C. Crank pin, crankshaft and flywheel

D. All of the above

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An involute pinion and gear are in mesh. If both have the same size of addendum, then there will be an interference between the

A. Tip of the gear tooth and flank of pinion

B. Tip of the pinion and flank of gear

C. Flanks of both gear and pinion

D. Tip of both gear and pinion

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If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

A. Stable

B. Unstable

C. Isochronous

D. None of these

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In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

A. Tractive force

B. Swaying couple

C. Hammer blow

D. None of these

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If ω/ω_n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

A. 0°

B. 90°

C. 180°

D. 360°

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Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?

A. Theory of machines

B. Applied mechanics

C. Mechanisms

D. Kinetics

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The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is

A. l = 2p - 2

B. l = 2p - 3

C. l = 2p - 4

D. l = 2p - 5

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Module of a gear is

A. D/T

B. T/D

C. 2D/T

D. 2T/D

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The arrangement is called bevel gearing, when two __________ are connected by gears.

A. Intersecting and coplanar shafts

B. Nonintersecting and non-coplanar shafts

C. Parallel and coplanar shafts

D. Parallel and non-coplanar shafts

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Shaft revolving in a bearing is the following type of pair

A. Lower pair

B. Higher pair

C. Spherical pair

D. Cylindrical pair

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Under logarithmic decrement, the amplitude of successive vibrations are

A. Constant

B. In arithmetic progression

C. In geometric progression

D. In logarithmic progression

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The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is

A. (1/2). μ W cosec α (r₁ + r₂)

B. (2/3).μ W cosec α (r₁ + r₂)

C. (1/2). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)]

D. (2/3). μ W cosec α [(r₁³ - r₂³)/(r₁² - r₂²)]

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The dedendum circle diameter is equal to (where, φ = Pressure angle)

A. Pitch circle dia. × cosφ

B. Addendum circle dia. × cosφ

C. Clearance circle dia. × cosφ

D. Pitch circle dia. × sinφ

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The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

A. (1/2) μ W R

B. (2/3) μ W R

C. (3/4) μ W R

D. μ W R

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In a pantograph, all the pairs are

A. Turning pairs

B. Sliding pairs

C. Spherical pairs

D. Self-closed pairs

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The absolute acceleration of any point P in a link about center of rotation O is

A. Along PO

B. Perpendicular to PO

C. At 45° to PO

D. None of the above

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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)

A. 2π. √(g/δ)

B. 1/2π. √(g/δ)

C. 2π. √(δ/g)

D. 1/2π. √(δ/g)

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In a reciprocating steam engine, which of the following forms a kinematic link?

A. Cylinder and piston

B. Piston rod and connecting rod

C. Crankshaft and flywheel

D. Flywheel and engine frame

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In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

A. Will remain same

B. Will change

C. Could change or remain unaltered depending on which link is fixed

D. Will not occur

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When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

A. Stable

B. Unstable

C. Isochronous

D. None of these

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For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

A. Governor A is more sensitive than governor B

B. Governor B is more sensitive than governor A

C. Both governors A and B are equally sensitive

D. None of the above

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The steering of a ship means

A. Movement of a complete ship up and down in vertical plane about transverse axis

B. Turning of a complete ship in a curve towards right or left, while it moves forward

C. Rolling of a complete ship sideways

D. None of the above

Discuss this answer

Angular acceleration of a link can be determined by dividing the

A. Centripetal component of acceleration with length of link

B. Tangential component of acceleration with length of link

C. Resultant acceleration with length of link

D. All of the above

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Instantaneous center of rotation of a link in a four bar mechanism lies on

A. Right side pivot of this link

B. Left side pivot of this link

C. A point obtained by intersection on extending adjoining links

D. Cant occur

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If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

A. 0°

B. 90°

C. 180°

D. 360°

Discuss this answer

Accepted Answer

B. Turning of a complete ship in a curve towards right or left, while it moves forward

The steering of a ship means

Correct Answer :

Show all Theory of Machines MCQ

Related Questions

The critical speed of a shaft depends upon its

The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

In gears, interference takes place when

In a steam engine, the link constitutes a

An involute pinion and gear are in mesh. If both have the same size of addendum, then there will be an interference between the

If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

If ω/ω_n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?

The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is

Module of a gear is

The arrangement is called bevel gearing, when two __________ are connected by gears.

Shaft revolving in a bearing is the following type of pair

Under logarithmic decrement, the amplitude of successive vibrations are

The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is

The dedendum circle diameter is equal to (where, φ = Pressure angle)

The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

In a pantograph, all the pairs are

The absolute acceleration of any point P in a link about center of rotation O is

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)

In a reciprocating steam engine, which of the following forms a kinematic link?

In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

The steering of a ship means

Angular acceleration of a link can be determined by dividing the

Instantaneous center of rotation of a link in a four bar mechanism lies on

If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

Also checkout

The steering of a ship means

Correct Answer :

Show all Theory of Machines MCQ

Related Questions

The critical speed of a shaft depends upon its

The acceleration of a particle at any instant has two components i.e. radial component and tangential component. These two components will be

The frictional torque transmitted in a conical pivot bearing with assumption of uniform pressure is __________ as compared to uniform wear.

In gears, interference takes place when

In a steam engine, the link constitutes a

An involute pinion and gear are in mesh. If both have the same size of addendum, then there will be an interference between the

If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

Which of the following disciplines provides study of the relative motion between the parts of a machine and the forces acting on the parts?

The relation between number of pairs (p) forming a kinematic chain and the number of links (l) is

Module of a gear is

The arrangement is called bevel gearing, when two __________ are connected by gears.

Shaft revolving in a bearing is the following type of pair

Under logarithmic decrement, the amplitude of successive vibrations are

The frictional torque transmitted in a truncated conical pivot bearing, considering uniform wear, is

The dedendum circle diameter is equal to (where, φ = Pressure angle)

The frictional torque transmitted in a flat pivot bearing, considering uniform wear, is (where μ = Coefficient of friction, W = Load over the bearing, and R = Radius of bearing surface)

In a pantograph, all the pairs are

The absolute acceleration of any point P in a link about center of rotation O is

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)

In a reciprocating steam engine, which of the following forms a kinematic link?

In a mechanism, usually one link is fixed. If the fixed link is changed in a kinematic chain, then relative motion of other links

When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

For two governors A and B, the lift of sleeve of governor A is more than that of governor B, for a given fractional change in speed. It indicates that

The steering of a ship means

Angular acceleration of a link can be determined by dividing the

Instantaneous center of rotation of a link in a four bar mechanism lies on

If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

Also checkout

If ω/ω_n is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach