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Theory Of Machine MCQ Questions & Answers | Mechanical Engineering

Learn Theory Of Machine MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Theory Of Machine MCQ question is the important chapter for a Mechanical Engineering and GATE students. Page-5 section-4

Each section contains 100 MCQs on Theory of Machine .
41
In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
42
Transmission of power from the engine to the rear axle of an automobile is by means of
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Answer & Solution
Answer: Option C
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43
The ratio of the driving tensions for V-belts is __________ times that of flat belts.
(Where β = Semi-angle of the groove)
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Answer & Solution
Answer: Option C
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44
In an open pair, the two elements of a pair
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Answer & Solution
Answer: Option C
Solution:
>In an open pair:

Option A: Have a surface contact when in motion. This is incorrect because surface contact typically describes a closed pair.

Option B: Have a line or point contact when in motion. This is incorrect as it typically describes higher pairs, not open pairs.

Option C: Are kept in contact by the action of external forces, when in motion. This is correct because, in an open pair, external forces are necessary to maintain contact between the elements.

Option D: Are not held together mechanically. This is incorrect because while they are not mechanically locked, they are held together by external forces.

Therefore, the correct answer is Option C: Are kept in contact by the action of external forces, when in motion.
45
In a single slider crank chain
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Answer & Solution
Answer: Option D
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46
The motion between a pair when limited to a definite direction, irrespective of the direction of force applied, is known as
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Answer & Solution
Answer: Option A
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47
The primary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is
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Answer & Solution
Answer: Option B
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48
The secondary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is
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Answer: Option C
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49
In elliptical trammels
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Answer: Option C
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50
The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap.
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Answer & Solution
Answer: Option A
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