ISRO SC/ENG 2007

 1) Hardness of martensite is about

A. RC 65
B. RC 48
C. RC 57
D. RC 80

 2) Which is false statement about annealing. Annealing is done to

A. Relieve stresses
B. Harden steel slightly
C. Improve machining chracteristics
D. Soften material

 3) Materials exhibiting time bound behavior are known as

A. Visco elastic
B. Anelastic
C. Isentropic
D. Resilient

 4) Shrinkage allowance is made by

A. Adding to external and internal dimensions
B. Subtracting from external and internal dimensions
C. Subtracting from external dimensions and adding to internal dimensions
D. Adding to external dimensions and subtracting from internal dimensions

 5) Machinability depends on

A. Microstructure, physical and mechanical properties and composition of workpiece material
B. Cutting forces
C. Type of chip
D. Tool life

 6) Spinning operation is carried out on

A. Hydraulic press
B. Mechanical press
C. Lathe
D. Milling machine