CIVILWAR DAY 11 - KWA - CHAIN , MECH -Cast gear & milled gear

Front

Flag is fixed on the top of a ranging rod for visibility when it is more than ________ in distance.

Back

200 m

Answer explanation

Flag is fixed for visibility beyond 500 m.

Front

A metallic tape is made of: Steel, Invar, Linen, Cloth and wires

Back

Cloth and wires

Answer explanation

Metallic tapes are usually made of steel.

Front

Which method of offsets involves less measurement on the ground?

Back

Method of ties

Answer explanation

Method of ties reduces ground measurement work.

Front

Magnetic bearing of the sun at noon in the southern hemisphere is 167°. What is the magnetic declination?

Back

13° E

Answer explanation

Magnetic declination is 13°E.

Front

Number of links per metre length of a chain is:

Back

5

Answer explanation

A chain has 10 links per metre length.

Front

Calculate pitch diameter for milling a bevel gear if module = 3 mm and number of teeth = 24.

Back

72

Answer explanation

Pitch diameter = m × z = 3 × 24 = 72 mm.

Front

What is the addendum of gear teeth?

Back

Distance between outside circle to pitch circle

Answer explanation

Addendum = Outside circle – Pitch circle.

Front

Why is the involute profile preferred to cycloidal?

Back

Only one curve is required to cut

Answer explanation

Involute requires only one curve for cutting.

Front

For mass production of helical gears, the following machine is suitable: Gear shaper, Broach, Plain milling machine, Hobbing machine

Back

Hobbing machine

Answer explanation

Hobbing is used for mass production.

Front

Which method produces gear by generating process? Options: Hobbing, Casting, Punching, Milling

Back

Hobbing

Answer explanation

Hobbing is a generating process for gear cutting.