Satellites burn off during re-entry to earth’s atmosphere, because of the ____________________?

A. Combustion with air
B. Gravitational pull by earth
C. Friction with earth’s atmosphere
D. Loss in weight of the satellite

About _________________ ton of coke is required in a cupola to produce one ton of casting ?

A. 0.03
B. 0.3
C. 0.8
D. 1.5

Joining of thin foils is preferred to be done by _____________________?

A. Gamma rays
B. X-rays
C. Microwaves
D. Gas welding

Laser welding is widely employed in the __________________ industries ?

A. Electronic
B. Structural
C. Process
D. Heavy

Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils ?

A. Elaiden test
B. Reichert-Meissl value test
C. Hunter value test
D. Iodine value test

Water flow in the river during flood can be categorized as the _________________ flow ?

A. Unsteady uniform
B. Unsteady non-uniform
C. Steady uniform
D. Steady non-uniform

Lap joints are preferred over butt joints in soldering/brazing, because these joints are _________________?

A. Weaker in tension but stronger in shear
B. Weaker in shear but stronger in tension
C. Stronger in both shear and tension
D. The lap joints are easily made

Gratings is associated with the measurement of____________________?

A. Linear displacement
B. Concavity/convexity
C. Surface texture
D. Flatness

Normalising does not _____________________ of a metal?

A. Improve machinability & tensile strength
B. Remove internal stresses
C. Refine the structure
D. Remove strains caused by cold working

Which of the following approaches the ideal gas behavior most closely ?

A. Wet steam
B. Saturated steam
C. Superheated steam
D. Saturated water