Engineering :: Theory of Machines
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1. |
Kinematics of machines deals with |
A. |
Apparatus for applying mechanical power |
B. |
Number of inter-related parts |
C. |
The forces acting on the parts of the machine |
D. |
The relative motion between the parts, neglecting the consideration of the force |
E. |
None of the above |
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Answer: Option D
Explanation:
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2. |
The difference between a machine and a structure is |
A. |
The machine serves to modify and transmit forces only whereas structures serve to modify and transmit mechanical work |
B. |
The machine serves to modify and transmit mechanical work whereas structures serve to modify and transmit forces only |
C. |
The relative motion exists between the parts of a structures whereas it does not exist in machines |
D. |
Structures are temporary constructions whereas machines are paramanent |
E. |
None of the above |
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Answer: Option B
Explanation:
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3. |
The mechanism used in a petrol engine is |
A. |
Crank mechanism |
B. |
Slider mechanism |
C. |
Slider crank mechanism |
D. |
Natural line and circular mechanism |
E. |
None of the above |
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Answer: Option C
Explanation:
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4. |
The rectilinear motion of a piston is converted into rotary motion by |
A. |
Piston rod |
B. |
Crank |
C. |
Piston pin |
D. |
Connecting rod |
E. |
Cross-head |
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Answer: Option D
Explanation:
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5. |
The mass moment of inertia is |
A. |
The resistance to angular acceleration |
B. |
The mass of every element of a body multiplied by its distance from the axis |
C. |
Any of the above |
D. |
None of the above |
Answer: Option A
Explanation:
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6. |
The linear velocity of a point on a link relative to any other point on the link will be |
A. |
Along the line joining the two points |
B. |
Perpendicular to the line joining the two points |
C. |
Same as that of the end points of link |
D. |
Perpendicular to the lower end of the link |
E. |
None of the above |
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Answer: Option B
Explanation:
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7. |
In case of instantaneous centre of rotation |
A. |
Only three rigid links have no linear velocities relative to each other |
B. |
Two rigid links rotate instantaneously relative to each other |
C. |
One rigid link has no linear velocity |
D. |
The two rigid links have no linear velocities relative to each other at the instantaneous centre |
E. |
None of the above |
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Answer: Option D
Explanation:
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8. |
Dynamic of machines deals with |
A. |
The relative motion between the parts, neglecting the consideration of forces |
B. |
The forces acting on the parts of the machine |
C. |
The apparatus for applying mechanical power |
D. |
The number of inter-related parts, each having a definite motion |
E. |
None of the above |
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Answer: Option B
Explanation:
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9. |
Which of the following is a lower pair? |
A. |
Piston and cylinder |
B. |
Cam and follower |
C. |
Belt drive |
D. |
Gear |
E. |
None of the above |
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Answer: Option A
Explanation:
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10. |
In a kinematic chain the minimum number of kinematic pairs required is |
Answer: Option D
Explanation:
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