1. The minimum distance from a rivet hole centre to the nearest edge of the plate is called ?

lag

pitch

lead

margin

Answer: margin

Explanation:


2. In a riveted joint the edge of plates are simply laid over each other and riveted. This joint is called ?

butt joint

lap joint

corner joint

edge joint

Answer: lap joint

Explanation:


3. Mallet is made of ?

hard wood

lead

cast iron

brass

Answer: hard wood

Explanation:


4. Brass is an alloy consisting of ?

copper & iron

copper & tin

copper & zinc

zinc & tin

Answer: copper & zinc

Explanation:


5. Melting point of aluminium is approximately ?

1500°c

660°c

2500°c

1000°c

Answer: 660°c

Explanation:


6. Which of the following property of metal is not a mechanical property ?

malleability

toughness

elasticity

conductivity

Answer: conductivity

Explanation:


7. Metals possess physical and mechanical properties. Which one of the following is a physical property of metals ?

malleability

fusibility

ductility

tenacity

Answer: fusibility

Explanation:


8. Crane hooks are made of ?

steel

wrought iron

none of the above

cast iron

Answer: wrought iron

Explanation:


9. Decirable hardness in a file is generally ?

45 HRC

60 HRC

30 HRC

80 HRC

Answer: 60 HRC

Explanation:


10. The alloy containing more than 2% iron is know as ?

mild steel

low alloy steel

cast iron

high speed steel

Answer: cast iron

Explanation: