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241.

In case of biaxial stress system when a member is subjected to tensile stresses in two perpendicular directions the maximum shear stress in case of mild steel occurs on a plane inclined at

A.	22	B.	30?
C.	45?	D.	90?
E.	0?

242.

The process of polymerisation is associated with

A.	Cast iron	B.	High speed steel
C.	Non-ferrous material	D.	Non-metallic materials
E.	Thermo-plastic

243.

Boring is generally

A.	Followed by reaming	B.	Preceded by reaming
C.	Followed by drilling	D.	Preceded by drilling
E.	None of the above

244.

Coolant is used on a lathe

A.	To cool the work piece	B.	To cool the tool
C.	To remove the chips	D.	All the above
E.	None of the above

245.

Small end of a connecting rod forging is

A.	Super finished	B.	Lapped
C.	Honned	D.	Ground
E.	Broached

246.

Preheating of material to be welded is necessary in case of

A.	Carbon steel	B.	Stainless steel
C.	High speed steel	D.	Cast iron
E.	Non-ferrous materials

247.

Heavy water is used in atomic power plants as

A.	Fuel	B.	Source of energy
C.	Lubricant	D.	Moderator
E.	Viscous damping fluid

248.

Electron with energy level of 2 MeV is considered as

A.	Dead slow electron	B.	Slow electron
C.	Fast electron	D.	Super-fast electron
E.	There is no consideration as such

249.

Which of the following is a fuel used in fast reactors?

A.	Chromium	B.	Plutonium
C.	Heavy water	D.	Zirconium
E.	Graphite

250.

In Brinell hardness testing the time of loading is

A.	15 seconds	B.	30 seconds
C.	1 minute	D.	5 minutes
E.	10 minutes