MCQ Questions and Answers on Theory of Machines

Q.

A point on a link connecting a double slider crank chain will trace a

A. Straight line

B. Circle

C. Parabola

D. Ellipse

Discuss

Answer : Option:- D

Explanation :

The path traced by a point on the link connecting a double slider crank chain is an ellipse.

Q.

ABCD is a mechanism with link lengths AB = 200, BC = 300, CD = 400 and DA = 300. Which one of the following links should be fixed for the resulting mechanism to be a double crank mechanism?

A. AB

B. BC

C. CD

D. DA

Discuss

Answer : Option:- A

Explanation :

Double crank mechanism is achieved by fixing the shortest link. Among given AB has shortest length.

Q.

Which one of the following mechanisms represents an inversion of the single slider crank chain?

A. Elliptical trammel

B. Oldham’s coupling

C. Whitworth quick return mechanism

D. Pantograph mechanism

Discuss

Answer : Option:- C

Explanation :

Whitworth quick return mechanism is obtained from single slider crank chain by fixing its crank.

Q.

A mechanism has n number of links (including fixed links) and f number of pins or revolute pairs or pairs that permit one degree of freedom. According to Gruebler’s equation the number of degrees of freedom is given by

A. F = 3(n−1)−2f

B. F = 2(n−1)−3f

C. F = 3(n−1)+ 2f

D. F = 2(n−1)+ 3f

Discuss

Answer : Option:- A

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Universal joint is used to connect two shafts which are

A. Non-parallel and intersecting shafts and misaligned shafts

B. Parallel and intersecting shafts and misaligned shafts

C. Parallel and intersecting shafts and aligned shafts

D. Non-parallel and intersecting shafts and aligned shafts

Discuss

Answer : Option:- A

Explanation :

Universal joint is used to connect two nonparallel and intersecting shafts and misaligned shafts.

Q.

Which one of the following statements is not correct?

A. Hooke’s joint is used to connect two rotating co-planar, non-intersecting shafts

B. Hooke’s joint is used to connect two rotating co-planar, intersecting shafts

C. Oldham’s coupling is used to connect two parallel rotating shafts

D. Hooke’s joint is used in the steering mechanism for automobiles

Discuss

Answer : Option:- A

Explanation :

Universal joint/Hooke's joint is used to connect two nonparallel and intersecting shafts and misaligned shafts.

Q.

In a Hooke’s joint, the driving shaft rotates at constant angular speed but driven shaft rotates at

A. Constant angular speed throughout its revolution

B. Constant angular speed for half revolution while varying speed for another half

C. Varying speed which gets it maximum value one times in each revolution

D. Varying speed which gets it maximum value two times in each revolution

Discuss

Answer : Option:- D

Explanation :

The driving shaft rotates at constant angular speed but driven shaft rotates at varying speed which gets it maximum value two times in each revolution.

Q.

Two shafts at an angle α are connected by hook’s joint. The maximum variation in the velocity of driven shaft w.r.t. its mean velocity is expressed as

A. Tan(α).sin(α)

B. Tan(α).cos(α)

C. Cot(α).sin(α)

D. Cot(α).cos(α)

Discuss

Answer : Option:- A

Explanation :

The maximum variation in the velocity of driven shaft w.r.t. its mean velocity is expressed as\n tan(α).sin(α)

Q.

The constant velocity ratio is achieved in a double Hooke’s joint when

A. Driving and driven shafts make equal but opposite angle with the intermediate shaft and forks of intermediate shaft lie in the same plane

B. Driving and driven shafts make equal but opposite angle with the intermediate shaft and forks of intermediate shaft lie in the orthogonal plane

C. Driving and driven shafts make equal angle with the intermediate shaft and forks of intermediate shaft lie in the same plane

D. Driving and driven shafts make equal angle with the intermediate shaft and forks of intermediate shaft lie in the orthogon

Discuss

Answer : Option:- C

Explanation :

The constant velocity ratio is achieved in a double Hooke’s joint when \"driving and driven shafts make equal angle with the intermediate shaft and forks of intermediate shaft lie in the same plane\".

Q.

If driving and driven shafts make equal angle with the intermediate shaft and forks of intermediate shaft lie in orthogonal planes, then maximum and minimum ratio of speeds of the shafts (ω2/ω1) is given by

A. Cosα, 1/cosα

B. 1/cosα, cosα

C. Cos2α, 1/cos2α

D. 1/cos2α, cos2α

Discuss

Answer : Option:- D

Explanation :

Discuss here! No Explaination Available for These Question.

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MCQ Questions and Answers on Theory of Machines

Q. A point on a link connecting a double slider crank chain will trace a

Q. ABCD is a mechanism with link lengths AB = 200, BC = 300, CD = 400 and DA = 300. Which one of the following links should be fixed for the resulting mechanism to be a double crank mechanism?

Q. Which one of the following mechanisms represents an inversion of the single slider crank chain?

Q. A mechanism has n number of links (including fixed links) and f number of pins or revolute pairs or pairs that permit one degree of freedom. According to Gruebler’s equation the number of degrees of freedom is given by

Q. Universal joint is used to connect two shafts which are

Q. Which one of the following statements is not correct?

Q. In a Hooke’s joint, the driving shaft rotates at constant angular speed but driven shaft rotates at

Q. Two shafts at an angle α are connected by hook’s joint. The maximum variation in the velocity of driven shaft w.r.t. its mean velocity is expressed as

Q. The constant velocity ratio is achieved in a double Hooke’s joint when

Q. If driving and driven shafts make equal angle with the intermediate shaft and forks of intermediate shaft lie in orthogonal planes, then maximum and minimum ratio of speeds of the shafts (ω2/ω1) is given by

Q.

A point on a link connecting a double slider crank chain will trace a

Q.

ABCD is a mechanism with link lengths AB = 200, BC = 300, CD = 400 and DA = 300. Which one of the following links should be fixed for the resulting mechanism to be a double crank mechanism?

Q.

Which one of the following mechanisms represents an inversion of the single slider crank chain?

Q.

A mechanism has n number of links (including fixed links) and f number of pins or revolute pairs or pairs that permit one degree of freedom. According to Gruebler’s equation the number of degrees of freedom is given by

Q.

Universal joint is used to connect two shafts which are

Q.

Which one of the following statements is not correct?

Q.

In a Hooke’s joint, the driving shaft rotates at constant angular speed but driven shaft rotates at

Q.

Two shafts at an angle α are connected by hook’s joint. The maximum variation in the velocity of driven shaft w.r.t. its mean velocity is expressed as

Q.

The constant velocity ratio is achieved in a double Hooke’s joint when

Q.

If driving and driven shafts make equal angle with the intermediate shaft and forks of intermediate shaft lie in orthogonal planes, then maximum and minimum ratio of speeds of the shafts (ω2/ω1) is given by