Test: Mechanism With Lower Pairs - 1


10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering | Test: Mechanism With Lower Pairs - 1


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QUESTION: 1

Match List-I (Application) with List-II (Mechanism) and select the correct answer using the codes given below the lists:

Solution:
QUESTION: 2

Match the List-I (Mechanism) with List-ll (Number of links):

Solution:
QUESTION: 3

Which of these mechanisms gives an approximately straight line?

Solution:

Grass-hoper and watt mechanisms gives an approximately straight line.

QUESTION: 4

Which of the following mechanism is extensively used as a substitute for T-square and set- square?

Solution:
QUESTION: 5

The Davis steering gear is not used because

Solution:

A Davis steering gear has sliding pairs which means more friction and easy wearing. The gear fulfills the fundamental equation of gearing in all the positions. Due to easy wearing if becomes inaccurate after some time.

QUESTION: 6

The Davis steering gear fullfills the condition of correct gearing at

Solution:
QUESTION: 7

The Ackermann steering gear fulfills the condition of correct gearing at

Solution:

An Ackermann steering gears has only turning pairs and thus is preferred. Its drawback is that fulfills the fundamental equation of correct gearing at the middle and the two extreme positions and not in all positions.

QUESTION: 8

The ratio between the width of the front axle and that of the wheel base of a steering mechanism is 0.44. At the instant when the front inner wheel is turned by 18°, what should be the angle turned by the outer front wheel for perfect steering?
[Take cot18° = 3.078, cot16° = 3.487, cot20° = 2.747]

Solution:


∴  

From the given data, we can see that φ should be closer to 16° and best possible option is (a).

QUESTION: 9

In automobiles, Hook’s joint is used between which of the followings?

Solution:
QUESTION: 10

A Hook’s joint is used to connect

Solution:

A Hook’s joint, commonly known as a universal joint is used to connect two non-parallel and intersecting shafts. It is also used for shafts with angular misalignment. A common application of this joint is in an automobile where it is used to transmit power from the gear box (of the engine) to the rear axle.

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