Stage 3

Gear was invented by

• rome mechanic of rome
• greek mechanic of Alexandria
• sir Benjamin Frankline
• Ancient Indian

which of the following material has highest weight/volume ratio

• coke
• barley
• char coal
• lime stone

which gauge is also known as gauge block

• slip gauge
• snap gauge
• go nogo gauge
• v block

An eye bolt is generally provided on

• cranes

• automobiles

• electric motors

• furnaces

I gram of gold can be extended upto

• 3 meter
• 300meter
• 3000meter
• 0.3meter

A fathometer works on the principle of

• reflection of magnetic waves
• reflection of radio waves
• reflection of x rays
• reflection of sound ways

The coupler of the railway carriages use what type of thread

• sq. thread
• knuckle thread
• ACME thread
• Butress thread

Stress concentration is static loading is more serious in

• ductile material
• unpredictable material
• depends on other factors
• brittle material

which of the material has both malleable and ductile

• gold

• silver

• copper

• titanium

Too rich mixture of S.I engine means air:fule ratio is about

• 01:10

• 10:15

• 15:10

• 10:01