Related Questions

In cold working of metal as compared to its hot working
A Cracks and blow holes are eliminated
B Ductility and impact strength improves
C Appreciable strain hardening is produced
D Yield stress, hardness and fatigue strength is not at all affected
Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?
A 1 hour
B 2 hours
C 3 hours
D 4 hours
E 5 hours
Steel balls are manufactured by cold heading. After cold forming, they are subjected to
A Tempering
B Normalising
C Stress-relieving
D Artificial ageing
Stresses encountered in the metal forming processes are less than the __________ of the material.
A Fracture strength
B Yield strength
C Elastic limit
D Limit of proportionality
Cold working of metal increases
A Tensile strength
B Yield strength
C Hardness
D All of these
The increase in hardness of metal due to its cold working is termed as the __________ hardening.
A Work
B Age
C Induction
D Flame
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
A Fracture
B Dislocation
C Slip
D Twinning
Cold working of steel is defined as working
A At its recrystallisation temperature
B Above its recrystallisation temperature
C Below its recrystallisation temperature
D At two thirds of the melting temperature of the metal
Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?
A Emissivity of pipe surface
B Diameter & length of the pipe
C Temperature of hot pipe surface & that of air in the room
D None of these
Each of the following idioms is followed by some alternatives. Choose the one which best expresses its meaning : To blow hot and cold -
A To be inconsistent
B To be untrustworthy
C Changing weather
D To be rich and poor frequently

Next steps