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