121) name the single speed power operated drilling machine
A) ELECTRIC HAND DRILL ( LIGHT DUTY)
122) the term surface finish refers to the ....
A) ROUGHNESS OR SMOOTHNESS OF A SURFACE
123) the graduations of a depth micro meter are
A) IN THE REVERSE DIRECTION TO THAT OF THE OUT SIDE MICRO METER , BOTH THIMBLE AND SLEEVE
124) the equivalent of 1" in metric is ,...
A) 25.4MM
125) the feeler gauge is used for
A) CHECKING THE GAP BETWEEN MATING PARTS
126) the dial test indicator shows the measurement as
A) THE MAGNIFIED SMALL VARIATIONS IN SIZES THROUGH A POINTER
127) the equivalent of one miter in the inch system is ?
A) 39.37"
128) what is the composition of plain carbon steel ?
A) ALLOY OF IRON AND CARBON
129) the main purpose of annealing is
A) TO IMPROVE MACHINABILITY
130) how can we harden a copper strip ?
A) BY COLD WORKING
131) name the soil fuel, most suitable for forgoing tool steel
A) CHARCOAL
132) what should be done to remove the mushroom formed on a foreign tool?
A) REMOVE MUSHROOM BY GRINDING
133) the hardening temperature for a 0.5% carbon steel is...
A) SLIGHT ABOVE THE UPPER CRITICAL TEMPERATURE
134) name the plane figure bounded by more then four sides
A) POLYGON
135) why are soldering irons made with copper heads
A) GOOD CONDUCTIVITY OF HEAT,STRONG AFFINITY TO SOLDER
136) name the tool used for locking and closing the seam
A) GROOVER
137) name any to materials used for making rivets :
A) MILD STEEL, COPPER, BRASS, ALUMINIUM, AND IT'S ALLOYS
138) state any two use of forming machine
A) CURVING METAL FORMING CYLINDERS
139) name any two fuel gasses used in welding :
A) ACETYLENE, HYDROGEN, COAL GAS, LIQUID PETROLEUM
140) name any two mechanical cleaning methods :
A) WIRE BRUSHING, GRINDING, CHIPPING, SAND BLASTING, METAL GRITTING, MACHINING, SCARPING, CLEANING WITH EMERY
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