Engineering :: Theory of Machines
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91. |
Klein's construction is used to determine |
A. |
Displacement of various parts |
B. |
Velocity of various parts |
C. |
Acceleration of various parts |
D. |
Angular acceleration of various parts |
E. |
None of the above |
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Answer: Option C
Explanation:
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92. |
Which is the false statement about a governor? |
A. |
A very sensitive governor may not be very stable |
B. |
Hunting in a governor may occur due to worn out guides of the sleeve |
C. |
Isochronism in govrnors is desirable when approximately one constant speeds is desired to be kept for all loads |
D. |
A sensitive governor cannot be isochronous |
E. |
A stable governor has a fixed position of balls for each speed within the working range |
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Answer: Option D
Explanation:
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93. |
In case of hypoid gears the mutual position of shafts will be |
A. |
Parallel |
B. |
Intersecting |
C. |
Non-parallel |
D. |
Non-intersecting |
E. |
Non-parallel, non-intersecting |
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Answer: Option E
Explanation:
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94. |
The gears are considered to be operating in medium velocity range if their peripheral velocity lies in the range |
A. |
1-3 m/sec |
B. |
3-15 m/sec |
C. |
15-25 m/sec |
D. |
25-50 m/sec |
E. |
50-75 m/sec |
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Answer: Option B
Explanation:
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95. |
Identify the incorrect statement in case of cycloidal gears |
A. |
Interference exists |
B. |
Interference does not exist |
C. |
Have less wear |
D. |
Ease in transmitting variable loads |
E. |
No lubrication needed |
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Answer: Option A
Explanation:
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96. |
A governor is said to be stable when |
A. |
There is one radius of the governor weights for each equilibrium speed |
B. |
There is minimum change of the radius of the governor weights at a operating speed |
C. |
The position of balls does not change within the operating speed |
D. |
The position of balls changes within permissible limits within the working range of a governor |
E. |
None of the above |
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Answer: Option A
Explanation:
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97. |
A governor is said to be isochronous when |
A. |
The equilibrium ball radii is constant for a given speed |
B. |
For each speed within the working range the ball weights occupy a definite specific position |
C. |
There is only one radius of the governor weights for each equilibrium sped |
D. |
There is only one equibilbrium speed which is constant for all radii of rotation of the bells within the working range |
E. |
None of the above |
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Answer: Option D
Explanation:
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98. |
For two meshing gears, their |
A. |
No. of teeth must be same |
B. |
Addendum must be same |
C. |
Dedendum must be same |
D. |
Clearance must be same |
E. |
Module must be same |
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Answer: Option E
Explanation:
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99. |
Module is expressed in |
A. |
mm |
B. |
mm/mm |
C. |
mm/No. of teeth |
D. |
Dimensionless |
E. |
None of the above |
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Answer: Option A
Explanation:
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100. |
Pitch of gears is expressed by |
A. |
Circular pitch |
B. |
Diametral pitch |
C. |
Module |
D. |
Any of the above |
E. |
None of the above |
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Answer: Option D
Explanation:
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