Which of the following is an example of a higher pair?

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Which of the following is an example of a higher pair?

A. Toothed gearing

B. Belt and rope drive

C. Ball and roller bearing

D. All of these

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The example of lower pair is

A. Shaft revolving in a bearing

B. Straight line motion mechanisms

C. Automobile steering gear

D. All of the above

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If the opposite links of a four bar linkage are equal, the links will always form a

A. Triangle

B. Rectangle

C. Parallelogram

D. Pentagon

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The working depth of a gear is the radial distance from the

A. Pitch circle to the bottom of a tooth

B. Pitch circle to the top of a tooth

C. Top of a tooth to the bottom of a tooth

D. Addendum circle to the clearance circle

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Kinematic pairs are those which have two elements that

A. Have line contact

B. Have surface contact

C. Permit relative motion

D. Are held together

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A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

A. f_n/2

B. 2 f_n

C. 4 f_n

D. 8 f_n

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Relationship between the number of links (L) and number of pairs (P) is

A. P = 2L - 4

B. P = 2L + 4

C. P = 2L + 2

D. P = 2L - 2

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V-belts are usually used for

A. Long drives

B. Short drives

C. Long and short drives

D. None of these

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3.The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)

A. ω² × OQ

B. ω² × OQ sinθ

C. ω² × OQ cosθ

D. ω² × OQ tanθ

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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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The Bifilar suspension method is used to determine

A. Natural frequency of vibration

B. Position of balancing weights

C. Moment of inertia

D. Centripetal acceleration

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Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is

A. π (r₁ + r₂) + (r₁ + r₂)²/x + 2x

B. π (r₁ + r₂) + (r₁ - r₂)²/x + 2x

C. π (r₁ - r₂) + (r₁ - r₂)²/x + 2x

D. π (r₁ - r₂) + (r₁ + r₂)²/x + 2x

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A higher pair has__________.

A. Point contact

B. Surface contact

C. No contact

D. None of the above

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If ω/ω_n = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the

A. 0.5

B. 1

C. 1.5

D. 2

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The method of direct and reverse cranks is used in engines for

A. The control of speed fluctuations

B. Balancing of forces and couples

C. Kinematic analysis

D. Vibration analysis

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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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Which of the following is a spring controlled governor?

A. Hartnell governor

B. Hartung governor

C. Wilson-Hartnell governor

D. All of these

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Rectilinear motion of piston is converted into rotary by

A. Cross head

B. Slider crank

C. Connecting rod

D. Gudgeon pin

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Klein's construction can be used when

A. Crank has a uniform angular velocity

B. Crank has non-uniform velocity

C. Crank has uniform angular acceleration

D. Crank has uniform angular velocity and angular acceleration

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Which of the following statement is wrong?

A. The difference between the maximum and minimum energies is called maximum fluctuation of energy

B. The coefficient of fluctuation of speed is the ratio of maximum fluctuation of speed to the mean speed

C. The variations of energy above and below the mean resisting torque line is known as fluctuation of energy

D. None of the above

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An automobile steering gear is an example of

A. Sliding pair

B. Rolling pair

C. Lower pair

D. Higher pair

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In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.

A. Yes

B. No

C. Unpredictable

D. None of these

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In a shaper mechanism, the Coriolis component of acceleration will

A. Not exist

B. Exist

C. Depend on position of crank

D. None of the above

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The primary unbalanced force is maximum _________ in one revolution of the crank.

A. Twice

B. Four times

C. Eight times

D. Sixteen times

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The centrifugal tension in belts

A. Increases power transmitted

B. Decreases power transmitted

C. Have no effect on power transmitted

D. Increases power transmitted upto a certain speed and then decreases

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The velocity of sliding __________ the distance of the point of contact from the pitch point.

A. Is directly proportional to

B. Is inversely proportional to

C. Is equal to cos φ multiplied by

D. Does not depend upon

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Cam size depends upon

A. Base circle

B. Pitch circle

C. Prime circle

D. Outer circle

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Klein's construction can be used to determine acceleration of various parts when the crank is at

A. Inner dead centre

B. Outer dead centre

C. Right angles to the link of the stroke

D. All of the above

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A watt's governor can work satisfactorily at speeds from

A. 60 to 80 r.p.m.

B. 80 to 100 r.p.m.

C. 100 to 200 r.p.m.

D. 200 to 300 r.p.m.

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In a disc clutch, if there are n₁ number of discs on the driving shaft and n₂ number of discs on the driven shaft, then the number of pairs of contact surfaces will be

A. n₁ + n₂

B. n₁ + n₂ + 1

C. n₁ + n₂ - 1

D. n₁ + n₂ - 2

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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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Accepted Answer

D. All of these

Which of the following is an example of a higher pair?

Correct Answer :

Show all Theory of Machines MCQ

Related Questions

The example of lower pair is

If the opposite links of a four bar linkage are equal, the links will always form a

The working depth of a gear is the radial distance from the

Kinematic pairs are those which have two elements that

A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

Relationship between the number of links (L) and number of pairs (P) is

V-belts are usually used for

3.The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)

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

The Bifilar suspension method is used to determine

Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is

A higher pair has__________.

If ω/ω_n = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the

The method of direct and reverse cranks is used in engines for

Angular acceleration of a link can be determined by dividing the

Which of the following is a spring controlled governor?

Rectilinear motion of piston is converted into rotary by

Klein's construction can be used when

Which of the following statement is wrong?

An automobile steering gear is an example of

In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.

In a shaper mechanism, the Coriolis component of acceleration will

The primary unbalanced force is maximum _________ in one revolution of the crank.

The centrifugal tension in belts

The velocity of sliding __________ the distance of the point of contact from the pitch point.

Cam size depends upon

Klein's construction can be used to determine acceleration of various parts when the crank is at

A watt's governor can work satisfactorily at speeds from

In a disc clutch, if there are n₁ number of discs on the driving shaft and n₂ number of discs on the driven shaft, then the number of pairs of contact surfaces will be

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

Also checkout

Which of the following is an example of a higher pair?

Correct Answer :

Show all Theory of Machines MCQ

Related Questions

The example of lower pair is

If the opposite links of a four bar linkage are equal, the links will always form a

The working depth of a gear is the radial distance from the

Kinematic pairs are those which have two elements that

A simple spring-mass vibrating system has a natural frequency of fn. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

Relationship between the number of links (L) and number of pairs (P) is

V-belts are usually used for

3.The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)

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

The Bifilar suspension method is used to determine

Two pulleys of radii r₁ and r₂ and at distance x apart are connected by means of an open belt drive. The length of the belt is

A higher pair has__________.

If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the

The method of direct and reverse cranks is used in engines for

Angular acceleration of a link can be determined by dividing the

Which of the following is a spring controlled governor?

Rectilinear motion of piston is converted into rotary by

Klein's construction can be used when

Which of the following statement is wrong?

An automobile steering gear is an example of

In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.

In a shaper mechanism, the Coriolis component of acceleration will

The primary unbalanced force is maximum _________ in one revolution of the crank.

The centrifugal tension in belts

The velocity of sliding __________ the distance of the point of contact from the pitch point.

Cam size depends upon

Klein's construction can be used to determine acceleration of various parts when the crank is at

A watt's governor can work satisfactorily at speeds from

In a disc clutch, if there are n₁ number of discs on the driving shaft and n₂ number of discs on the driven shaft, then the number of pairs of contact surfaces will be

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

Also checkout

If ω/ω_n = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the