Discussion
Home ‣ Mechanical Engineering ‣ Engineering Materials Comments
- Question
The hardness of steel depends upon the
Options- A. amount of cementite it contains
- B. amount of carbon it contains
- C. contents of alloying elements
- D. method of manufacture of steel
- Correct Answer
- amount of carbon it contains
- 1. In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as
Options- A. 50° C and normal atmospheric pressure
- B. 50° C and 1.1 bar pressure
- C. 100° C and normal atmospheric pressure
- D. 100° C and 1.1 bar pressure Discuss
- 2. Which of the following compound steam engine requires a smaller flywheel?
Options- A. Receiver type
- B. Tandem type
- C. Woolf type
- D. all of these Discuss
- 3. The function of an eccentric rod is
Options- A. to provide reciprocating motion to the slide valve
- B. to convert reciprocating motion of the piston into rotary motion of the crank
- C. to convert rotary motion of the crankshaft into to and fro motion of the valve rod
- D. to provide simple harmonic motion to the D-slide valve Discuss
- 4. The function of a valve rod is
Options- A. to provide reciprocating motion to the slide valve
- B. to convert reciprocating motion of the piston into rotary motion of the crank
- C. to convert rotary motion of the crankshaft into to and fro motion of the valve rod
- D. to provide simple harmonic motion to the D-slide valve Discuss
- 5. The working pressure range for a La-Mont boiler is
Options- A. 0.5 to 10 MN/m2
- B. 1 to 15 MN/m2
- C. 2.5 to 15 MN/m2
- D. 3.5 to 20 MN/m2 Discuss
- 6. When a low carbon steel is heated upto upper critical temperature
Options- A. there is no change in grain size
- B. the average grain size is a minimum
- C. the grain size increases very rapidly
- D. the grain size first increases and then decreases very rapidly Discuss
- 7. Which of the following statement is correct?
Options- A. The product produced by blastfurnace is called cast iron.
- B. The pig iron is the name given to the product produced by cupola.
- C. The cast iron has high tensile strength.
- D. The chilled cast iron has no graphite. Discuss
- 8. Which of the following statements are true for annealing of steels?
Options- A. Steels are heated to 500 to 700° C
- B. Cooling is done slowly and steadily
- C. Internal stresses are relieved
- D. all of these Discuss
- 9. Which of the following statement is true about brittle fracture?
Options- A. High temperature and low strain rates favour brittle fracture
- B. Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture
- C. Brittle fracture is always preceded by noise
- D. Cup and cone formation is characteristic for brittle materials Discuss
- 10. Beryllium bronze has
Options- A. high yield point
- B. high fatigue limit
- C. both (a) and (b)
- D. none of these Discuss
Engineering Materials problems
Search Results
Correct Answer: 100° C and normal atmospheric pressure
Correct Answer: Receiver type
Correct Answer: to convert rotary motion of the crankshaft into to and fro motion of the valve rod
Correct Answer: to provide simple harmonic motion to the D-slide valve
Correct Answer: 3.5 to 20 MN/m2
Correct Answer: the average grain size is a minimum
Correct Answer: The chilled cast iron has no graphite.
Correct Answer: all of these
Correct Answer: Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture
Correct Answer: both (a) and (b)
Comments
There are no comments.More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.