1501. Which of the following is called Strategic metal ?

A. Silicon
B. Titanium
C. Uranium *
D. Germanium

1502. The operation of threading a drilled hole is called :

A. Tapping *
B. Broaching
C. Lapping
D. Reaming

1503 . The first symbol in a grinding wheel code is the :

A. Bond Type
B. Grain size
C. Structure
D. Abrasive Type *

1504. Thermit welding is a form of :

A. Fusion welding *
B. Gas welding
C. Resistance welding
D. Arc welding

1505. Electrode gets consumed in which type of welding process ?

A. Arc *
B. Thermit
C. T.I.G
D. Gas

1506. Which of the following metals can be easily drawn into the wire ?

A. Lead
B. Copper *
C. Tin
D. Zinc

1507. Lube oil is used in diesel engines :

A. To ignite
B. To cool the engine
C. To reduce friction
D. B and C both *

1508. Air is changed in the cylinder of diesel engine by :

A. Exhaust valve
B. Inlet valve *
C. Injector
D. Air box

1509. Type of filter fitted in a tractor is :

A. Paper type *
B. Cotton type
C. Oil-bath type
D. Wire type

1510. Nichrome is commonly used for :

A. Transformer windings
B. Battery connections
C. Lamp filament
D. Heater coils