Engineering :: Machine Design
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191. |
The gears used for non-intersecting perpendicular shafts are |
A. |
Spur gears |
B. |
Helical gears |
C. |
Double helical gears |
D. |
Hypoid gears |
E. |
Herringbone gears |
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Answer: Option D
Explanation:
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192. |
When minimum axial thrust is the criteria, the choice of gears would been |
A. |
Helical gears |
B. |
Hypoid gears |
C. |
Herringbone gears |
D. |
Worm gears |
E. |
None of the above |
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Answer: Option C
Explanation:
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193. |
In order to avoid interference for 20 pressure and teeth, minimum number of teeth should be |
Answer: Option D
Explanation:
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194. |
An automobile gear box has |
A. |
Simple gear train |
B. |
Compound gear train |
C. |
Epicycle gear train |
D. |
Compound epicyclic gear train |
E. |
None of the above |
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Answer: Option B
Explanation:
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195. |
Stub tooth is |
A. |
Standard gear tooth |
B. |
Equivalent rack tooth |
C. |
Longer than standard tooth depth |
D. |
Shorter than standard tooth depth |
E. |
Non-standard tooth |
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Answer: Option D
Explanation:
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196. |
Gears for wrist watches are generally manufactured by |
A. |
Pitcl, angle |
B. |
Lead angle |
C. |
Helix angle |
D. |
Axial pitch angle |
E. |
Pressure angle |
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Answer: Option C
Explanation:
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197. |
A reverted gear train is one in which |
A. |
The direction of rotation of first and last gear is the same |
B. |
The direction of rotation of first and last gear is opposite |
C. |
The first and last gear are on the same shaft |
D. |
The first and the last gear are essentially on separate but parallel shafts |
E. |
None of the above |
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Answer: Option C
Explanation:
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198. |
The function of gear box in an automobile is |
A. |
To reduce speed |
B. |
To increase speed |
C. |
To provide variable speeds |
D. |
To produce torque |
E. |
To increase efficiency |
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Answer: Option C
Explanation:
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199. |
In a Vee belt the angle between the sides is |
Answer: Option D
Explanation:
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200. |
A chain drive is used for |
A. |
Very short distance |
B. |
Short distance |
C. |
Medium distance |
D. |
Long distance |
E. |
Distance is no criteria for such drives |
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Answer: Option E
Explanation:
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