Engineering :: Engineering Mechanics
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51. |
A couple produces |
A. |
translatory motion |
B. |
rotational motion |
C. |
combined translatory and rotational motion |
D. |
none of the above |
Answer: Option B
Explanation:
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52. |
Which of the following statement is correct? |
A. |
The algebraic sum of the forces, constituting the couple is zero. |
B. |
The algebraic sum of the forces, constituting the couple, about any point is the same. |
C. |
A couple cannot be balanced by a single force but can be balanced only by a couple of opposite sense |
D. |
all of the above |
Answer: Option D
Explanation:
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53. |
The point, through which the whole weight of the body acts, irrespective of its position, is known as |
A. |
moment of inertia |
B. |
centre of gravity |
C. |
centre of percussion |
D. |
centre of mass |
Answer: Option B
Explanation:
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54. |
The term 'centroid' is |
A. |
the same as centre of gravity |
B. |
the point of suspension |
C. |
the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis |
D. |
none of the above |
Answer: Option A
Explanation:
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55. |
An irregular body may have more than one centre of gravity. |
Answer: Option A
Explanation:
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56. |
The centre of gravity of a rectangle lies at a point where its two diagonals meet each other. |
Answer: Option A
Explanation:
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57. |
The centre of gravity of a triangle lies at a point where its medians intersect each other. |
Answer: Option A
Explanation:
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58. |
The centre of gravity of an equilateral triangle with each side a, is |
Answer: Option C
Explanation:
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59. |
The centre of gravity of a semi-circle lies at a distance of |
Answer: Option B
Explanation:
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60. |
The centre of gravity of a hemisphere lies at a distance of 3r / 8 from its base measured along the vertical radius. |
Answer: Option A
Explanation:
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