Mechanical Engineering - Workshop Technology

11. 

In a hot chamber die casting machine

A. ferrous alloys with low melting temperature are casted
B. ferrous alloys with high melting temperature are casted
C. non-ferrous alloys with low melting temperature are casted
D. non-ferrous alloys with high melting temperature are casted

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

12. 

The chisel used for cutting key ways is

A. flat chisel
B. cape chisel
C. round nose chisel
D. diamond pointed chisel

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

13. 

The temperature at which the new grains are formed in the metal is called

A. lower critical temperature
B. upper critical temperature
C. eutectic temperature
D. recrystallisation temperature

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

14. 

Thread rolling is restricted to

A. ferrous materials
B. ductile materials
C. hard materials
D. none of these

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

15. 

In sheet metal blanking, shear is provided on punches and dies so that

A. press load is reduced
B. good cut edge is obtained
C. warping of sheet is minimised
D. cut blanks are straight

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.