# Machine Kinematics Questions and Answers – Mechanism – 2

This set of Machine Kinematics Quiz focuses on “Mechanism – 2”.

1. In a coupling rod of a locomotive, each of the four pairs is a _____________ pair.
a) sliding
b) turning
c) rolling
d) screw

Explanation: In a locomotive, one rod of the coupling rod can only turn or revolve about a fixed axis of another rod. This takes place only in case of turning pair.

2. Whitworth quick return motion mechanism consists of three turning pairs and one sliding pair.
a) True
b) False

Explanation: Whitworth quick return motion mechanism is a form of single slider crank chain and it consists of one sliding pair and three turning pairs.

3. In a single slider crank chain
a) each of the four pairs is a turning pair
b) one is a turning pair and three are sliding pairs
c) two are turning pairs and two are sliding pairs
d) three are turning pairs and one is a sliding pair

Explanation: Single slider crank chain consists of one sliding pair and three turning pairs.
Four bar chain consists of four links and each of them forms a turning pair.

4. The mechanism consisting of three turning pairs and one sliding pair, is called a
a) single slider crank chain
b) whitworth quick return motion mechanism
c) crank and slotted lever quick return motion mechanism
d) all of the mentioned

Explanation: All the mechanisms mentioned above are forms of single slider crank chain only and hence, they all contain three turning pairs and one sliding pair. The inversion of a single slider crank chain are found in the following mechanism:
a) Pendulum pump or Bull engine
b) Rotary internal combustion engine
c) Oscillating cylinder engine
d) Crank and slotted lever quick return motion mechanism
e) Whitworth quick return motion mechanism

5. Which of the following is an inversion of a single slider crank chain?
a) Pendulum pump
b) Oscillating cylinder engine
c) Rotary internal combustion engine
d) All of the mentioned

Explanation: All the mechanisms mentioned above are forms of single slider crank chain only and hence, they all contain three turning pairs and one sliding pair. The inversion of a single slider crank chain are found in the following mechanism:
a) Pendulum pump or Bull engine
b) Rotary internal combustion engine
c) Oscillating cylinder engine
d) Crank and slotted lever quick return motion mechanism
e) Whitworth quick return motion mechanism.

6. A point on a connecting link of a double slider crank mechanism traces a
a) straight line path
b) hyperbolic path
c) parabolic path
d) elliptical path

Explanation: None.

7. The whitworth quick return motion mechanism is formed in a slider crank chain when the
c) slider is a fixed link

Explanation: None.

8. Scotch yoke mechanism is used to generate
a) sine functions
b) square roots
c) logarithms
d) inversions

Explanation: None.

9. Which of the following is an inversion of a double slider crank chain?
a) Oldham’s coupling
b) Elliptical trammel
c) Scotch yoke mechanism
d) All of the mentioned

Explanation: A double slider crank chain consists of two sliding pairs and two turning pairs. The inversions of a double slider crank chain are as follows:
a) elliptical trammel
b) scotch yoke mechanism
c) oldham’s coupling.

10. Whitworth quick return motion mechanism is an inversion of a double slider crank chain.
a) True
b) False

Explanation: Whitworth quick return motion mechanism is a form of single slider crank chain and it consists of one sliding pair and three turning pairs.

11. A rotary internal combustion engine has __________ cylinders.
a) four
b) five
c) six
d) seven

Explanation: None.

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