1. In welding copper alloys with TIG arc welding ?

direct current with straight polarity is used

direct current with reversed polarity is used

alternating current is used

any one of these

Answer: direct current with straight polarity is used

Explanation:


2. The flux commonly used in brazing is ?

zinc chloride

ammonium chloride

rosin plus alcohol

borax

Answer: borax

Explanation:


3. Galvanising is a ?

zinc diffusion process

process of coating zinc by hot dipping

process used for making thin phosphate coating on steel

none of the above

Answer: process of coating zinc by hot dipping

Explanation:


4. Linde welding uses ?

neutral flame and right-ward technique

oxidising flame and left-ward technique

neutral flame and left-ward technique

carburising flame and right-ward technique

Answer: carburising flame and right-ward technique

Explanation:


5. A ring gauge is used to ?

check the diameter of shafts or studs

test the accuracy of holes

check the clearance between two mating surfaces

all of the above

Answer: check the diameter of shafts or studs

Explanation:


6. The teeth of hacksaw blade are bent ?

towards right

towards left

alternately towards right and left and every third or fourth left straight

may be bent in any direction

Answer: alternately towards right and left and every third or fourth left straight

Explanation:


7. The algebraic difference between the maximum limit and the basic size is called ?

actual deviation

upper deviation

lower deviation

fundamental deviation

Answer: upper deviation

Explanation:


8. The type of file used for a wood work is ?

single-cut file

double cut file

rasp-cut file

all of these

Answer: rasp-cut file

Explanation:


9. A diamond pointed chisel is used for cutting ?

flat surfaces

grooves

keyways

V-shaped grooves

Answer: V-shaped grooves

Explanation:


10. Notching is the operation of ?

cutting a sheet of metal in a straight line along the length

removal of metal to the desired shape from the edge of a plate

cutting a sheet of metal through part of its length and then bending the cut portion

bending a sheet of metal along a curved axis

Answer: removal of metal to the desired shape from the edge of a plate

Explanation: