# Mechanisms - Mechanical Engineering (MCQ) questions and answers

1)   What are the minimum number of kinematic pairs required in a kinematic chain?

a. 2 kinematic pairs
b. 3 kinematic pairs
c. 4 kinematic pairs
d. None of the above
 Answer  Explanation ANSWER: 4 kinematic pairs Explanation: No explanation is available for this question!

2)   According to Grashof's law in a four bar chain, one link can complete a rotation only if ________

a. (sum of longest and shortest link length) ≥ (sum of the remaining two link lengths)
b. (sum of longest and shortest link length) ≤ (sum of the remaining two link lengths)
c. (sum of longest and shortest link length) = (sum of the remaining two link lengths)
d. None of the above
 Answer  Explanation ANSWER: (sum of longest and shortest link length) ≤ (sum of the remaining two link lengths) Explanation: No explanation is available for this question!

3)   Beam engine mechanism is an example of

a. double crank mechanism
b. double lever mechanism
c. crank and lever mechanism
d. none of the above
 Answer  Explanation ANSWER: crank and lever mechanism Explanation: No explanation is available for this question!

4)   Which of the following inversions of four bar chain, convert oscillatory motion from one lever to another lever?

a. Ackermann steering gear mechanism
b. Beam engine mechanism
c. Coupled wheels of locomotive
d. All of the above
 Answer  Explanation ANSWER: Ackermann steering gear mechanism Explanation: No explanation is available for this question!

5)   In the slider crank mechanism shown below, link 2 is fixed. This second inversion of slider crank mechanism is observed in ______

a. Reciprocating air compressor
b. I. C. engine
c. Whitworth quick return mechanism
d. Crank and slotted lever quick return mechanism
 Answer  Explanation ANSWER: Whitworth quick return mechanism Explanation: No explanation is available for this question!

6)   Which of the following statements is/are true for mechanisms?

a. A slider crank mechanism is formed, if one link in slider crank chain is fixed
b. Three kinematic links joined together forms a mechanism
c. Kinematic chain is a part of kinematic pair
d. All of the above
 Answer  Explanation ANSWER: A slider crank mechanism is formed, if one link in slider crank chain is fixed Explanation: No explanation is available for this question!

7)   Which body transmits force with negligible deformation?

a. Elastic body
b. Resistant body
c. Deforming body
d. All of the above
 Answer  Explanation ANSWER: Resistant body Explanation: No explanation is available for this question!

8)   What is the primary function of mechanism?

a. Power transmission
b. Power absorption
c. Force transmission
d. Motion transmission
 Answer  Explanation ANSWER: Motion transmission Explanation: No explanation is available for this question!

9)   Which of the following is an inversion of four bar chain?

a. Coupled wheels of locomotive
b. Whitworth quick return mechanism
c. Reciprocating air compressor
d. Hand pump
 Answer  Explanation ANSWER: Coupled wheels of locomotive Explanation: No explanation is available for this question!

10)   What are the number of sliding and turning pairs in a slider crank mechanism?

a. 1 sliding pair and 3 turning pairs
b. 2 sliding pairs and 2 turning pairs
c. 3 sliding pairs and 1 turning pair
d. None of the above
 Answer  Explanation ANSWER: 1 sliding pair and 3 turning pairs Explanation: No explanation is available for this question!