1) The component deforming progressively under load at high temperatures is called as
a. Resilience
b. Creep
c. Fatigue
d. All of the above
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Answer
Explanation
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ANSWER: Creep
Explanation:
No explanation is available for this question!
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2) What is the percentage of carbon in plain carbon steel?
a. 60 to 80%
b. Less than 1.7%
c. Less than 7%
d. None of the above
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Answer
Explanation
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ANSWER: Less than 1.7%
Explanation:
No explanation is available for this question!
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3) Hardness of a material enables it to resist _______
a. abrasion
b. penetration
c. plastic deformation
d. all of the above
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Answer
Explanation
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ANSWER: all of the above
Explanation:
No explanation is available for this question!
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4) Which of the following ferrous alloys can be casted into intricate shapes?
a. Plain carbon steels
b. Alloy steels
c. Cast irons
d. All of the above
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Answer
Explanation
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ANSWER: Cast irons
Explanation:
No explanation is available for this question!
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5) Which of the following is not a property of copper alloy?
a. High electrical conductivity
b. High thermal conductivity
c. High strength
d. None of the above
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Answer
Explanation
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ANSWER: High strength
Explanation:
No explanation is available for this question!
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6) Which of the following statements is/are true for alloy steels?
a. They contain carbon more than 1.7%
b. They are ductile
c. They have low resilience and toughness
d. All of the above
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Answer
Explanation
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ANSWER: They are ductile
Explanation:
No explanation is available for this question!
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7) Which of the following is a ferrous alloy?
a. Brass
b. Aluminum alloys
c. Cast steel
d. All of the above
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Answer
Explanation
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ANSWER: Cast steel
Explanation:
No explanation is available for this question!
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8) Copper when alloyed with zinc is known as
a. Brass
b. Bronze
c. Babbits
d. All of the above
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Answer
Explanation
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ANSWER: Brass
Explanation:
No explanation is available for this question!
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9) The plastic materials which do not undergo chemical change when heated are ____
a. Thermoplasts
b. Thermosets
c. Both a. and b.
d. None of the above
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Answer
Explanation
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ANSWER: Thermoplasts
Explanation:
No explanation is available for this question!
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10) Which of the following is a characteristic of Polytetra-flouro-ethylene?
a. High coefficient of friction
b. Tough at high temperature
c. Resistance to chemical attack
d. All of the above
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Answer
Explanation
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ANSWER: Resistance to chemical attack
Explanation:
No explanation is available for this question!
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