MCQs on Design Cosiderations
1 - Question
Stressed parts are always kept in tension.
a) True
b) False
View Answer
Answer: a
Explanation: Cast iron has more compressive strength.
2 - Question
Shot blasting process improves the endurance limit of the component.
a) True
b) False
View Answer
Answer: a
Explanation: Shot blasting employs throwing wheel which imparts strength to the material.
3 - Question
. Which process allows controlling grain structure of the product?
a) Casting
b) Forging
c) None of the mentioned
d) Die Casting
View Answer
Answer: b
Explanation: In casting metal is in fluid state and hence impossible to control the grain structure.
4 - Question
While designing a forging, the profile is selected such that the fibrous lines are parallel to the tensile forces and perpendicular to shear forces.
a) True
b) False
View Answer
Answer: a
Explanation: Tensile load is applied parallel to the grain structures.
advertisement
5 - Question
Cast surfaces have good finishing.
a) True
b) False
View Answer
Answer: b
Explanation: Cavity is surrounded by sand and hence not good finish is obtained.
6 - Question
In forging, metal is in which of the following stage?
a) Elastic
b) Plastic
c) Can be in any stage
d) Rigid
View Answer
Answer: b
Explanation: Forging is the working of metal in plastic range.
7 - Question
Forged components can be held between close limits.
a) True
b) False
View Answer
Answer: a
Explanation: There is no shrinkage problems and hence less tolerances.
8 - Question
Among casting, forging and forging which has the slowest rate of production?
a) Casting
b) Forging
c) Machining
d) All have equal rate of production
View Answer
Answer: c
Explanation: Machining each part is very time consuming.
9 - Question
In manual assembly, cost of screw is higher than the cost of driving a screw.
a) True
b) False
View Answer
Answer: b
Explanation: Generally manufacturing screw is cheaper than driving it.
10 - Question
Maximum carbon content in welding is usually limited to
a) 0.22%
b) 0.8%
c) 1.5%
d) 2%
View Answer
Answer: a
Explanation: With increase of carbon, welding becomes difficult as weld becomes susceptible to cracks.