Engineering :: Machine Design
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211. |
The phenomenon of eloggation and contraction of the belt is known as |
A. |
Slip |
B. |
Creep |
C. |
Fatigue |
D. |
Elasticity |
E. |
Plasticity |
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Answer: Option B
Explanation:
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212. |
Cold working of materials |
A. |
Increases the fatigue strength |
B. |
Reduces the fatigue strength |
C. |
Does not change fatigue strength |
D. |
Has no effect on fatigue trength |
E. |
None of the above |
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Answer: Option A
Explanation:
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213. |
The stress concentration factor for flat bar in tension with a circular hole, is |
Answer: Option E
Explanation:
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214. |
A positive infinitely variable (P.I.V.) system utilises |
A. |
Variable pitch chain drive system |
B. |
Hydraulic variable speed drive |
C. |
Rolling contact variable speed |
D. |
Vee belt variable speed system |
E. |
None of the above |
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Answer: Option A
Explanation:
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215. |
Bush bearings are |
A. |
Phosphor bronze |
B. |
Aluminium brass |
C. |
Mild steel |
D. |
White metal alloys |
E. |
None of the above |
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Answer: Option D
Explanation:
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216. |
A Babbit is |
A. |
A eutectic of iron and iron phosphide |
B. |
A gadget for measuring volume |
C. |
Antimony bearing lead or tin alloy |
D. |
A measure of magnetic induction produced in a material |
E. |
None of these |
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Answer: Option C
Explanation:
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217. |
For butt welding of two plates, each of which is 300 cm thick, the best process would be |
A. |
Gas welding |
B. |
Submerged are welding |
C. |
TIG welding |
D. |
MIG welding |
E. |
Electro slag welding |
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Answer: Option E
Explanation:
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218. |
The thickness of a gear tooth is measured |
A. |
Along the pitch circle |
B. |
Along the root circle |
C. |
Along the outer circle |
D. |
Average of the profile |
E. |
None of the above |
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Answer: Option A
Explanation:
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219. |
The part of the tooth which lies between the pitch and dedendum circle is known as |
Answer: Option D
Explanation:
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220. |
The angle through which a gear turns from the beginning of contact of a pair of teeth until the contact reaches the pitch point, is known as |
A. |
Pressure angle |
B. |
Angle of contact |
C. |
Angle of approach |
D. |
Approach angle |
E. |
Angle of action |
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Answer: Option C
Explanation:
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